Developing the medicinal plants sector in northern India: challenges and opportunities
© Kala et al; licensee BioMed Central Ltd. 2006
Received: 02 May 2006
Accepted: 08 August 2006
Published: 08 August 2006
The medicinal properties of plant species have made an outstanding contribution in the origin and evolution of many traditional herbal therapies. These traditional knowledge systems have started to disappear with the passage of time due to scarcity of written documents and relatively low income in these traditions. Over the past few years, however, the medicinal plants have regained a wide recognition due to an escalating faith in herbal medicine in view of its lesser side effects compared to allopathic medicine in addition the necessity of meeting the requirements of medicine for an increasing human population. Through the realization of the continuous erosion of traditional knowledge of plants used for medicine in the past and the renewed interest at the present time, a need existed to review this valuable knowledge of medicinal plants with the purpose of developing medicinal plants sectors across the different states in India. Our major objectives therefore were to explore the potential in medicinal plants resources, to understand the challenges and opportunities with the medicinal plants sector, and also to suggest recommendations based upon the present state of knowledge for the establishment and smooth functioning of the medicinal plants sector along with improving the living standards of the underprivileged communities. The review reveals that northern India harbors a rich diversity of valuable medicinal plants, and attempts are being made at different levels for sustainable utilization of this resource in order to develop the medicinal plants sector.
Forests have played key roles in the lives of people living in both mountains and lowland areas by supplying fresh water and oxygen as well as providing a diversity of valuable forest products for food and medicine . The age-old traditional values attached with the various forest types and the varieties of forest products (i.e., medicinal plants) have gained tremendous importance in the present century [2, 3]. Furthermore, the cosmetic industries are increasingly using natural ingredients in their products, and these natural ingredients include extracts of several medicinal plants . India and China are two of the largest countries in Asia, which have the richest arrays of registered and relatively well-known medicinal plants . Since the Indian subcontinent is well known for its diversity of forest products and the age-old healthcare traditions, there is an urgent need to establish these traditional values in both the national and international perspectives realizing the ongoing developmental trends in traditional knowledge. Apart from health care, medicinal plants are mainly the alternate income-generating source of underprivileged communities [6, 7]; therefore, strengthening this sector may benefit and improve the living standard of poor people. A great deal of traditional knowledge of the use of various plant species is still intact with the indigenous people, and this fact is especially relevant with the mountainous areas such as the Himalaya due to less accessibility of terrain and comparatively slow rate of development [8, 9].
The ongoing growing recognition of medicinal plants is due to several reasons, including escalating faith in herbal medicine. Allopathic medicine may cure a wide range of diseases; however, its high prices and side-effects are causing many people to return to herbal medicines which have fewer side effects . The instant rising demand of plant-based drugs is unfortunately creating heavy pressure on some selected high-value medicinal plant populations in the wild due to over-harvesting. Several of these medicinal plant species have slow growth rates, low population densities, and narrow geographic ranges [11, 12]; therefore they are more prone to extinction . Conversely, because information on the use of plant species for therapeutic purpose has been passed from one generation to the next through oral tradition, this knowledge of therapeutic plants has started to decline and become obsolete through the lack of recognition by younger generations as a result of a shift in attitude and ongoing socio-economic changes [8, 14]. Furthermore, the indigenous knowledge on the use of lesser-known medicinal plants is also rapidly declining . Through the realization of the continuous erosion in the traditional knowledge of many valuable plants for medicine in the past and the renewal interest currently, the need existed to review the valuable knowledge with the expectation of developing the medicinal plants sector.
The present paper is therefore concerned with the following major objectives: 1) discovering the role, value, diversity and potential in medicinal plants resources, 2) assessing various aspects of medicinal plant sector, which includes challenges and opportunities, and 3) suggesting recommendations based on existing information for the benefit and development of medicinal plants sector in northern India.
Use and diversity in medicinal plants
Distribution of medicinal plants.
Country or region
Total number of native species in flora
No of medicinal plant species reported
% of medicinal plants
Schippmann et al. 2002
Samant et al. 1998
The status of various medical systems in India.
Medicinal plants known
Under graduate college
Post graduate college
The northern part of India harbours a great diversity of medicinal plants because of the majestic Himalayan range. So far about 8000 species of angiosperms, 44 species of gymnosperms and 600 species of pteridophytes have been reported in the Indian Himalaya , of these 1748 species are known as medicinal plants . The maximum medicinal plants (1717 species) have been reported around the 1800 m elevation range. On the regional scale, the maximum species of medicinal plants have been reported from Uttaranchal , followed by Sikkim and North Bengal . The trans-Himalaya sustains about 337 species of medicinal plants , which is low compared to other areas of the Himalaya due to the distinct geography and ecological marginal conditions .
Several plant species are endemic to the Himalayan region. Out of total known number of higher plants from India, approximately 46% are endemic to the Himalaya . Of the total medicinal plant species, sixty-two species of medicinal plants are endemic to the Himalaya and 208 extend their distribution to the adjacent areas, and are therefore classified as near endemic . Over 200 species of Himalayan medicinal plants are consumed raw, roasted, boiled, fried, cooked, or they are used in the form of oil, spices, jams or pickles [19, 22]. The indigenous communities use some medicinal plant species as a source of food, fodder, timber as well as various other ethnobotanical purposes. For example, apart from the use of Myrica esculenta and Terminalia bellirica as medicines, the fruits of these species are edible, the leaves are used for fodder and the wood is used for fuel . Approximately 81 species of Himalayan medicinal plants are known to be used for the extraction of oil. Of the total 675 species of Himalayan wild edibles, 171 are used for the treatment of diseases . The crop plants diversity is also a source of traditional medicine .
Apart from the human use, animal husbandry uses many plant species as its primary source of healthcare in northern India [25, 26]. The reliance on medicinal plants is also due to cultural preferences [27, 28]. Medicinal plants have strong acceptance in religious activities of north Indian native communities, who worship the plants in the form of various gods, goddesses and minor deities [29, 30]. Origanum vulgare, Saussurea obvallata, Ocimum sanctum, Cedrus deodara, Cynodon dactylon, Aegle marmelos, Juniperus communis, Musa paradissica, Nardostachys grandiflora, Zanthoxylum armatum, Ficus benghalensis, and Ficus religiosa are examples of the medicinal plants highly used for medicinal as well as a religious purposes by the Hindus in northern India. The Buddhist community in northern India regards Terminalia chebula as an important medicine as well as sacred fruit. It has been stated long ago that the therapeutic potency of medicinal plants is more effective and better suited to a person of a particular region or culture in which the plant is naturally growing . This idea has given a way to the development of a new drug for heart patients of specific ethnic groups in African countries .
Challenges in medicinal plants sector
The continuous increase in human population is one of the causes for concern in meeting the daily requirements of food and medicine as the economy and livelihoods of human societies living in developing countries primarily depend on forest products. This phenomenon is leading to continuous erosion of forest and the forest products , thus making challenge to meet the requirements as well as to conserve useful bio-resources. More and more species are being gradually added in the Materia Medica; however, the standards of their purity and correct identification do not keep pace with the process of expansion . The market prices for medicinal plants and derived materials provide only a limited insight into the workings of the market, and not on the precise information of profits, supply and demand. We have identified the following major features and challenges on the basis of examining the existing knowledge on the medicinal plants sector.
Important medicinal plants in short supply and prioritized for the research and development.
No. of usesa
Quantity required tonnes/annumb
Species in short supplyc
Species prioritized for R & Dd
Acacia catechu (L. f.) Willd.
Aconitum ferox Wall.
Aconitum heterophyllum Wall.
Fever, cough, piles, stomachache
Aegle marmelos (L.) Correa
Dysentery, diarrhea, fever
Alpinia galanga (L.) Willd.
Andrographis paniculata (Burm. f.) Wall.
Malaria, liver complaints, blood purifier
Aquillaria malaccensis Lamk.
To remove fish spine from throat
Artemisia maritima L.
Antiseptic, blood purifier
Asparagus racemosus Willd.
Dysentery, cough, cut and wounds
Bacopa monnieri (L.) Penn.
Brain tonic, blood purifier, fever
Berberis aristata DC.
Cassia angustifolia Vahl
Chlorophytum tuberosum Bak.
Leucorrhoea, sexual tonic
Coleus barbatus Benth.
Tonic, blood pressure
Commiphora wightii (Arn.) Bhandari
Crocus sativus L.
Curculigo orchioides Gaerten.
Asthma, dysentery, tonic
Curcuma zedoaria (Christ) Rosc.
Jaundice, blood pressure
Embelia ribes Burm. f.
Skin diseases, leprosy
Garcinia indica Choisy
Gloriosa superba L.
Snake bite, leprosy, tonic
Gymnema sylvestre (Retz.) R. Br.
Gastric disorders, eye diseases
Hemidesmus indicus (L.) Br.
Cough, hypertension, dysentery
Mallotus philippensis Muell.-Arg.
Constipation, skin diseases, ulcer
Myrica esculenta Ham. ex Don
Asthma, fever, cough
Myristica fragrans Hoult.
Nardostachys jatamansi (Don) DC.
Bronchitis, blood purifier, hysteria
Nelumbo nucifera Gaertn.
Cholera, diarrhea, tonic
Ocimum sanctum L.
Fever, vomiting, liver complaints, blood purifier
Phyllanthus amarus Schum & Thonn
Jaundice, aphrodisiac, dysentery
Phyllanthus emblica L.
Constipation, diabetes, tonic
Picrorhiza kurrooa Benth.
Headache, fever, dysentery, anemia, asthma
Piper cubeba L. f.
Cholera, fever, cough
Piper longum L.
Indigestion, child birth, dysentery
Pistacia chinensis Bunge
Scorpion bite, dysentery
Plantago major L.
Wounds, weakness, constipation
Rauvolfia serpentina (L.) Benth. ex Kurz.
Malarial fever, snake bite
Santalum album L.
Dysentery, skin diseases
Saraca asoca (Roxb.) De Wilde
Heart disorder, tonic
Saussurea costus (Falc.) Lipsch.
Dysentery, asthma, ulcer
Menstrual complaints, small pox
Solanum nigrum L.
Jaundice, piles, skin diseases
Swertia chirayita (Roxb. ex Flem.) Karsten.
Malarial fever, blood purifier
Tinospora cordifolia (L.) Merr.
Jaundice, tonic, bone fracture
Valeriana jatamansi Jones
Epilepsy, urinary complaints
Withania somnifera (L.) Dunal
Eye complaints, asthma, cough
Wrightia tinctoria Br.
Toothache, piles, dysentery
More than 95% of the 400 plant species used in preparing medicine by various industries are harvested from wild populations in India . Harvesting medicinal plants for commercial use, coupled with the destructive harvest of underground parts of slow reproducing, slow growing and habitat-specific species, are the crucial factors in meeting the goal of sustainability [39, 40]. Harvesting shoots and leaves of medicinal plants may decline their photosynthetic capacity, and as well as the potential for survival and effective propagation. Medicinal plants tolerance to harvest varies with climatic conditions as the temperate herbs become highly vulnerable to harvest of individuals . Furthermore, rising demand with shrinking habitats may lead to the local extinction of many medicinal plant species.
The continuous exploitation of several medicinal plant species from the wild  and substantial loss of their habitats during past 15 years  have resulted in population decline of many high value medicinal plant species over the years. The primary threats to medicinal plants are those that affect any kind of biodiversity used by humans [17, 44]. The weakening of customary laws, which have regulated the use of natural resources, are among the causes of threatening the medicinal plant species [40, 45]. These customary laws have often proved to be easily diluted by modern socio-economic forces . There are many other potential causes of rarity in medicinal plant species, such as habitat specificity, narrow range of distribution, land use disturbances, introduction of non-natives, habitat alteration, climatic changes, heavy livestock grazing, explosion of human population, fragmentation and degradation of population, population bottleneck, and genetic drift [14, 46–48]. Additionally, natural enemies (i.e., pathogens, herbivores, and seed predators) could substantially limit the abundance of rare medicinal plant species in any given area [49, 50].
In addition to the consumption of medicinal plants by animals, there are physical ailments in humans, which are cured by different species of the same genera. For example, the malarial fever is treated by many species of Swertia (e.g. Swertia chiraiyta, S. angustifolia, and S. cordata). Similarly, different species of Berberis (e.g. Berberis aristata, B. asiatica, B. lycium, B. chitria and B. jaeschkeana) are used as a source of berberidine to cure certain eye diseases. Furthermore, different species of the same genera contain different proportions of chemical quantity, and there is a preference over their demand; however, the degree of threat for their exploitation is relatively lower than those species, which do not have alternatives
An estimated 4,000 to 10,000 species of medicinal plants face potential local, national, regional or global extinction, with subsequent serious consequences for livelihoods, economies and health care systems . Although, a few studies exist on the rare and endangered medicinal plant species of the northern India [8, 14, 48, 52, 53], none of these studies have complete data set for even a single species. In 2003, 71 rare and endangered medicinal plant species have been assessed for the northwest Himalaya during the Conservation Assessment and Management Plan workshop, according to the guidelines of the World Conservation Union. In northern India, Aconitum is the rarest genus with 5 species, followed by Rheum with 4 rare species. Out of the 71 rare medicinal plants, 92% are in active trade; 74% are traded nationally and 35% are traded internationally .
The meager availability of data on the population and quantum of rare species in nature, however, has restricted their categorization to a few species on the basis of herbarium collection and by consultation by a few experts . The present assessments are also questioned for their validity on the assignment of threat categories to the species, including the number of taxa in danger for specific area. The problems in assessing the species is increased in the mountainous region, especially high altitude areas because of tough and inaccessibility of the terrain, inhospitable climatic conditions, and short life cycle of plants. Most of the available data have been collected from the easily accessible areas in these mountains. Indigenous communities and commercial herb gatherers also raid these same areas for collection of medicinal plants. Therefore, the estimated population density of categorized rare medicinal plants is not precise because it differs the areas that never and hardly undergone any collection of such rare medicinal plant species .
Cultivation of medicinal plants
Information on the propagation of medicinal plants is available for less than 10% and agro-technology is available only for 1% of the total known plants globally [55, 56]. This trend shows that developing agro-technology should be one of the thrust areas for research. Furthermore, in order to meet the escalating demand of medicinal plants, farming of these plant species is imperative. Apart from meeting the present demand, farming may conserve the wild genetic diversity of medicinal plants. Farming permits the production of uniform material, from which standardized products can be consistently obtained. Cultivation also permits better species identification, improved quality control, and increased prospects for genetic improvements. Selection of planting material for large-scale farming is also an important task. The planting material therefore should be of good quality, rich in active ingredients, pest- and disease-resistant and environmental tolerant. For the large scale farming, one has to find out whether monoculture is the right way to cultivate all medicinal plants or one has to promote polyculture model for better production of medicinal plants.
Studies conducted on the agro-forestry of medicinal plants elsewhere suggest that since many medicinal plant species prefer to grow under forest cover, agroforestry offers a convenient strategy for their cultivation as well as conservation through: 1) integrating shade tolerant medicinal plants as lower strata species in multistrata system, 2) cultivating short cycle medicinal plants as intercrops in existing stands of tree crops, 3) growing medicinal tree as shade providers and boundary markers, and 4) inter-planting medicinal plants with food crops . Notwithstanding, it is understood that the cultivation of medicinal plants is not an easy task as the history of medicinal plants farming reflects. Many farmers in trans-Himalayan region of northern India have replaced the medicinal plants farming with common crops [i.e., peas (Pisum sativum), potatos (Solanum tuberosum) and hops (Humulus lupulus)] due to the lengthy cultivation cycle of medicinal plants like Saussurea costus . The cost of many medicinal plants in northern India is lower than many seasonal vegetables , which is a cause of scanty farming of medicinal plants.
Seedling survival, total cost of cultivation, and net income by cultivation of 10 important species of the rare and endangered medicinal plants.
Seedling survival (%)
Seed required per hectare (gm)
Total cost of cultivation (US $)
Total production (kg/hectare)
Income (US $)
Net income (US $)
Bio-prospecting and bio-piracy
The former remote green forests have now become part of a dynamic, profit-seeking economy and demanding pluralistic politics worldwide. Reducing the pressure on various forest products, especially on the medicinal plants, is therefore a tough challenge both for policy makers and for economists. Medicinal plants are the local heritage with global importance. The Convention on Biological Diversity at Rio had agreed on a framework that would help the biodiversity to be utilized in a prudent and controlled way. Bio-prospecting, at present, occurs in an environment of suspicions and growing tensions between the bio-piracy and rights of sharing benefits between the developing and developed countries . Most of the issues relating to the protection of the legal status for indigenous knowledge and compensation of the indigenous herbal practitioners for that knowledge are extremely complicated. There are arguments for the present state of compensation or benefit sharing under the intellectual property rights, which is being considered a new legal form of bio-piracy by one group, whereas other groups argue that the intellectual property right is a legal tool to protect the rights of knowledge holders .
Different ways and systems for awarding patents on the medicinal plants in India, United States, Europe, Canada and other countries have widened the confusion . In many countries, the plants and inventions directed to the plants and the plant products (i.e., seeds, flowers, gums, and resins) are not eligible for filing a patent. In United States, however, any living organism derived by human invention, such as by breeding or by laboratory-based manipulation, can be filed for awarding patent. The Indian Protection of Plant Varieties and Farmers Rights Act of 2001 recognizes the contribution of farmers who actively participate in the breeding programs. Furthermore, this act contains provisions for benefit sharing whereby local communities are acknowledged as a contributor of plants .
Unfortunately, there is a wide gap between developed and developing nations such as India on patenting the products. For example, out of the 3,125,603 patents filed in 91 countries, only 301,177 or 9.6% are registered in developing countries while the rest is in industrialized countries. Of these, only 0.2% of the total and 2.3% of those registered in developing countries belong to residents. In addition, 97.7% of the total patents filed thus far are in the name of non-residents, who apply solely to control export markets in developing countries . Developing nations and many scientists who want to exploit medicinal plants demand more specific rules about the recording of nationality of samples and sharing of their benefits between the nations of origin, the inventor, and the commercial sponsors. Some developed nations are not inclined to accept such provisions. These conflicts have frustrated many scientists who believe that natural products remain the most promising source for new drugs. To mitigate such conflicts and gear up to find out new sources for drugs, the representatives of 188 nations at Kuala Lumpur Conference in 2004 agreed to try to build such a framework that would be acceptable to all signatories and thus the proposed framework will be placed for consideration at the next meeting in 2006 going to be held in Brazil .
Strengthening legalized market system
Besides government agencies, there are numbers of stakeholders ranging from herb gatherers, local middlemen, urban traders, wholesalers, manufacturers, exporters and herbal healers in the medicinal plants trade sector. The marketing system in medicinal plants sector is largely unregulated and inequitable . The medicinal plant collectors are generally the marginal farmers and laborers. They get cash income to meet their basic requirements for food, health and children education by selling medicinal plants . They are often unaware about the real market prices of many medicinal plant species. Generally, in medicinal plants sector, there is a top down approach and even the many stakeholders at the bottom are not aware of the rising demand of their product and the availability of its market. In some villages of Chamoli district of Uttaranchal, the farmers had cultivated Kut (Saussurea costus) and Dolu (Rheum emodi) but they were unable to sell them due to lack of knowledge on the marketing system. Conversely, many medicinal plant species are traded through illegal channels .
The other constraints in the medicinal plants sector are: 1) slow rate of production of many medicinal plants, 2) long gestation period, 3) shortage of suitable cultivation technology, 4) production of small quantity, 5) unscientific harvesting, 6) paucity of research on the high yielding varieties, 7) inefficient processing techniques, 8) fluctuation in demand and supply, 9) poor quality control procedures, 10) scarcity of good manufacturers, (11) poor marketing infrastructure, and 12) poor coordination among different stakeholders [1, 3, 8, 14, 51, 59, 64]. On many occasions, the wild medicinal plants are preferred by manufactures compared to the cultivated ones, as there is a general feeling that wild plant species contain better chemical contents. The variation in chemical contents also depends upon the harvesting seasons of species and different stages of species growth. The medicinal plant sector is largely less documented and inadequately regulated. The economy generated by this sector is therefore, not precise because of the enormous illegal trade. The economic benefits and management cost for wild populations are poorly estimated on several occasions [4, 65].
Opportunities in developing the medicinal plants sector
For developing the 'herbal industries', the northern India possesses a rich diversity of medicinal plant species across the various forest types along an altitudinal gradient (as discussed in the use and diversity of medicinal plants). Such a high diversity of medicinal plants would be helpful for further scientific research on exploring their medical efficacy, value addition, and use in curing various old and new diseases . India has already established a reputation as a low-cost manufacturer of high quality generic drugs in the global market . This fact can be used as an important tool for the marketing of herbal products produced in India. It is expected that India's aim to build a golden triangle between traditional medicine, modern medicine, and modern science will be a boon for developing the traditional herbal medicine and the medicinal plants sector .
In the National Five Year Plans of India, the medicinal plants sector has been identified as an integral part of the Indian System of Medicine and Homeopathy . In 1983, the National Health Policy recognized that the large stock of health manpower in Ayurveda, Siddha, Unani, Homeopathy and Naturopathy had not been adequately utilized; therefore, steps need to be taken to move towards a meaningful integration of the indigenous and modern systems of medicine . The Planning Commission and the National Medicinal Plants Board (NMPB) of the Government of India have prepared a policy document on the promotional and commercial aspects of the medicinal plants sector. In addition, the NMPB has prioritized 32 and Planning Commission has enlisted 24 medicinal plant species for research and development in order to meet the desired aim of the medicinal plant sector (Table 3). The Biodiversity Act 2002 has framed many rules for sustainable utilization of medicinal plants and to mitigate the chances of bio-piracy .
According to Uttaranchal state action plan, the Forest Department of the state will have to identify two major areas in each Forest Division; namely the conservation area and the developmental area. The conservation areas will be selected based on their rich medicinal plants diversity and marked for in-situ conservation and complete protection in the concerned Forest Division. In the developmental areas, apart from protection of the existing bio-resources, the medicinal plant species of the neighboring areas will also be introduced and cultivated at a large scale. The remaining areas in the Forest Division will remain open for sustainable harvesting of the medicinal plant species. A Joint Harvesting Team, composed of medicinal plants experts, Forest Department officials and some selected local people, will be constituted, which will decide the extent of annual harvesting of the desired medicinal plant species . The various policies at national and state level and their subsequent implementation will provide an opportunity in the advancement of medicinal plants sector. This model of conservation and cultivation of the medicinal plants may be useful for generating the raw material for the 'Herbal Industries' as well as for ensuring the conservation of the rare medicinal plants.
Major institutions involved in funding projects to the medicinal plants research in India.
Funding for major areas in medicinal plants research
National Medicinal Plants Board, NMPB
Survey, documentation, cultivation, marketing, conservation
Department of Science & Technology, DST
Taxonomy, ecology, pathology, survey, propagation, documentation, cultivation, conservation
Council for Scientific & Industrial Research, CSIR
Ecology, taxonomy, biochemistry, survey, documentation, cultivation, genetics, agro-technology, conservation
Indian Council of Medical Research, ICMR
Breeding, value addition
All India Council for Technical Education, AICTE
Department of Biotechnology, DBT
Agro-technology, molecular biology, biochemistry, rural bio-technology
Defense Research & Development Organization, DRDO
Agro-technology, survey, documentation, conservation
Indian Council of Agricultural Research, ICAR
Breeding, pathology, molecular biology
Ministry of Environment & Forest, MoEF
Survey, documentation, conservation, management, ecological impact assessment, cultivation
National Bank for Agriculture and Rural Development, NABARD
University Grant Commission, UGC
Ecology, biochemistry, survey, documentation
Herbal Research and Development Institute, HRDI
Survey, documentation, nursery development
G.B. Pant Institute of Himalayan Environment & Development, GBPIHED
Survey, documentation, cultivation, conservation
Apart from the two major themes, the role of NMPB is to co-ordinate with the different ministries, departments, organizations, state and union territory Governments in order to develop and strengthen the medicinal plant sector. One of the major roles of NMPB is to make contacts with national and international organizations devoted to similar mandates and goals. A total of 35 State Medicinal Plants Boards have also been created by NMPB for the smooth functioning of the medicinal plants sector. Approximately 35,000 hectares of land has been selected and brought under cultivation under the supervision of NMPB for the large-scale farming of commercially important medicinal plants. One of the schemes of NMPB is a contractual farming in which any group, institution or person that possesses at least 3 years of experience in medicinal plants sector would be eligible to receive at least 30% financial assistance of the total project cost .
Status of project sanctioned on medicinal plants research and other disciplines by G.B. Pant Institute of Himalayan Environment and Development under the Integrated Eco-development Research Programs during 1992–2004
States (In Indian Himalaya)
Total project sanctioned on various disciplines
Number of Projects sanctioned on medicinal plants
% of projects sanctioned on medicinal plants by states
West Bengal (Hills)
The National Bank for Agriculture and Rural Development (NABARD) has established a policy with a viewpoint to develop a suitable environment for financial institutions by providing bankable models for some 50 medicinal and aromatic crops with the unit cost and scale of finance at the state level. Additionally, NABARD assists in supporting the capacity building of prospective entrepreneurs through Rural Entrepreneurs Development Programs by providing 100% refinancing [73, 74]. NABARD has also close linkages with the NMPB and different State Medicinal Plants Boards. Attempts have been made by various organizations at different levels to establish and promote the medicinal plants sector.
Recommendations for developing the medicinal plants sector
Assessment of problems and remedies for medicinal plant based economic venture in the northern India
Adoption of traditional medicinal knowledge on preparing herbal medical formulations is declining through generations.
Incentives should be given to the traditional herbal healers for preparation of herbal formulations, and attempts should be made to organize them.
Traditional knowledge on many less known medicinal plant species has declined rapidly.
Documentation of such less known medicinal plant species should be made without any further delay.
Continued illegal collection from wild has led to depletion of many important species.
Enforcement of existing Acts (e.g. Wildlife Protection Act, Forest Act, Biodiversity Act etc.).
Mostly collected and processed by un-trained persons.
Training should be given for collection and processing.
Competition for over-stocking has led to over-harvesting.
Large-scale farming of medicinal plants should be promoted.
Agro-technology is not available for many valuable medicinal plant species.
Development of agro-technology is mainly focused on the low productive and high cost rare and endangered medicinal plant species.
Development of agro-technology and promotion of rural bio-technology for large scale cultivation of economically important species also.
Farmers should be encouraged by providing incentives, training and awareness on the latest developments and policies related to the medicinal plants.
Selection of planting material for cultivation should be based on their habitats, locality, climate and elevations.
High risk in farming, long gestation period, and low prices of medicinal plants discourage farmers to cultivate medicinal plants.
Introduction of mixed cropping system to reduce the risk
Issuing license or permit to farmers for growing medicinal plants is a time consuming process, and farmers are sometime not aware of the process.
Process of issuing permits for cultivation of medicinal plants should be made easier and faster.
Small and scattered land holdings of the farmers, and cultivation is restricted to small plots near the farmer's houses.
Restoration of barren lands and allocation of land at one place based on farmer's choice and consensus.
Unavailability or low availability of irrigation facility
Rain water harvesting and construction of check dams on rivers and rivulets for irrigation purposes
Lacking of linkages among different stakeholders.
Development of capacity building programs for all stakeholders.
Role of Biotechnology
Low success rate in developing planting materials.
Need of in-depth research to enhance the rate of success.
Low yield unable to meet the commercial needs.
Development of high yielding varieties.
The supply chain of medicinal plants is quite large and primary producers are dependent on the middlemen and still they face difficulty in selling the product.
Direct selling to industry by producers should be encouraged. Buy-back arrangements between farmers and pharmaceutical companies might be useful.
Improper sharing of benefits due to lack of awareness among farmers and herb collectors on the real prices of medicinal plant.
Need of diffusion of information by distribution of pamphlets and conducting awareness programs on various aspects of medicinal plants.
Lacking of well-planned marketing infrastructure for medicinal plants.
Development of infrastructure with the help of various stakeholders including medicinal plants board.
Low awareness on the values of resources and traditional knowledge.
Documentation of traditional knowledge on medicinal plants and their uses.
The younger generations of herbal practitioners are not keen to adopt the tradition as a profession.
Renew the available herbal formulations by standardizing their efficacy, and to establish a Social Capital Trust for herbal practitioners in order to promote the tradition.
Unequal distribution of profits to the low profile stakeholders such as farmers and herb gatherers.
Sharing of benefits should be on the basis of labor and efforts.
Essential health commodity and maximum dependency on wild stock.
Setting up medicinal plants conservation areas.
Encroachment by outsiders and illegal collection from wild.
Enforcement of Forest and Wildlife Protection (Acts).
Selection of medicinal plant species for cultivation is an initial important step for the development of the medicinal plants sector. Economic feasibility is the major rationale for a decision to bring medicinal plant species into cultivation. Apart from the priority species selected by the Planning Commission and the NMPB, the rare species banned for collection from the wild should also be taken on a priority basis for cultivation because a majority of such species are very expensive, have high demand and low supply. Cultivation may not be economical if a medicinal plant species is abundant in the wild and easily collected. Therefore, the less abundant species in the wild should be promoted for the large-scale cultivation. Farming of any medicinal plant species should be brought into practice only after the reliable cultivation technology of the concerned species is available. A large variation in climatic and soil conditions in northern India sustain a variety of medicinal plant species, which may be cultivated according to their niche.
For developing the medicinal plants sector, there is a need to: 1) document indigenous uses of medicinal plants, 2) certify raw material for quality control, 3) develop and improve the agro-technology for valuable medicinal plants, 4) officially recognize and protect the customary laws of indigenous people, 5) prepare a clear policy for granting permits for cultivation within stipulated time, 6) conduct regular research and training on better harvesting and processing techniques, 7) investigate various pathological agents infecting medicinal plants, 8) setup a community-based management of medicinal plants farming and marketing, 9) analyze the market policies, 10) monitor and evaluate the status of medicinal plants with the assistance of local communities, 11) conserve the critical habitats of rare medicinal plant species, and 12) share benefits judiciously arising from local people's knowledge on medicinal plants. These attempts may reduce dependency on wild resource base, and generate alternative income opportunities for the rural and underprivileged communities [4, 48, 75, 76].
The medicinal plants sector can be improved if the agricultural support agencies would come forward to help strengthen the medicinal plants growers, and if research institutions would help the plant growers by improving their basic knowledge about cultivation practices . Awareness and interest of farmers, supportive government policies, assured markets, profitable price levels, access to simple and appropriate agro-techniques, and availability of trained manpower are some of the key factors for successful medicinal plants cultivation . The diffusion of any available scientific knowledge on medicinal plants should be made operational by a network structure of communication. Currently there are number of herbs which are used in curing diseases but are not documented in details due to a lack of communication and relatively low frequency of their uses. The traditional uses of low profile and lesser-known medicinal plants should also be documented to disseminate their therapeutic efficacy by preparing well acceptable medicines and also to reduce the pressure on over-exploited species.
Apart from the more than 9992 licensed pharmacies with 717319 registered practitioners of Ayurveda, Siddha, Unani and Homeopathy in India (Table 2), there are many unregistered herbal practitioners in India who prepare their own traditional herbal formulations for curing different diseases, and the available herbal formulations should be standardized for their efficacy. Such scientifically prepared medicine will place herbal medicine in a proper perspective and help in getting a broad global market. Some people do try to take advantage through the introduction of less effective medicinal plants in the name of well-established high-value medicinal plants. Such attempts must be discouraged. To discourage such malpractices, the certification of raw material should be done for quality control by using the modern tools such as thin layer chromatography and high performance thin layer chromatography. In addition, high performance liquid chromatography (HPLC), volumetric analysis, gas chromatography, column chromatography, and gravimetric determinations may be used for standardization and for quality control [35, 77, 78]. Various factors relating to pathological agents (e.g. bacteria, virus, fungi and nematodes) and infected medicinal plants should be investigated by identifying the various symptoms of diseases such as mildew, rust, necrosis, spots, blight, rot, wilt, galls, curl and canker to produce the healthy farming of medicinal plants.
On many occasions, the collection of planting material, especially of rare and endangered medicinal plant species from natural habitats for various experimental purposes by researchers, also poses a threat on their natural populations in wild. The researchers must be aware on the germination potential, seedlings and rhizomes survival strategies of the desired species collected from wild for scientific experiments. Researchers must plant a similar number of individuals back in nature after completion of research work on the collected species . There is also a communication problem between researchers and farmers. This communication problem limits a researcher's capability to deal with the farmers' problems . Hence, communication links between researchers, extension services of institutions, and farmers should be strengthened.
The majorities of current research programs on the medicinal plants conservation are being shifted from ecosystems to species levels. Although there are protected areas across the Himalaya, most of the protected areas have a focused attention on the preservation of faunal diversity except for a few protected areas such as the Valley of Flowers in North West Himalaya and the Tipi Orchid Sanctuary in North East Himalaya. There is not a single protected area focusing on the conservation of medicinal plants. Thus, there is an urgent need for identification and notification of areas for the conservation of medicinal plants on a priority basis. Most of the documentation and research on indigenous uses of medicinal plants is focused on the human aspect. Animal husbandry is the backbone of economy in a majority of indigenous societies. Maintaining the good health of livestock will benefit these indigenous societies. Since there are many medicinal plant species used in curing the various animal related disorders and diseases, the research work also needs to be done on the uses of medicinal plants for curing livestock diseases.
Being a part of tradition, there are many other social issues attached with medicinal plants sector. The indigenous knowledge on harvesting, storage and usage of medicinal plants built over centuries needs to be taken into account for improving the sector and allocating scare resources among the competing demands. Development of medicinal plants farming, encouragement of traditional herbal use and herbal healers, establishing medicinal plants conservation areas, establishing the Social Capital Trust for herbal healers, establishment of linkages among various stakeholders, etc., are among some of the social issues that need to be honored and addressed properly. The folklore on several medicinal plants and the formulation developed by using them is well recognized in different ethnic communities living in northern India. These folklores should be brought into laboratory for validation.
The traditional medical systems of northern India such as Ayurveda and Tibetan are part of a time-tested culture and honored by people still today. These traditions have successfully set an example of natural resource use in curing many complex diseases for more than 3,000 years. Many advantages of such eco-friendly traditions exist. The plants used for various therapies are readily available, are easy to transport, and have a relatively long shelf life. The most important advantage of herbal medicine is the minimal side effects, and relatively low cost compared to the synthetic medicines. The success of medicinal plants sector mainly depends on the awareness and interest of the farmers as well as its other stakeholders, supportive government policies, availability of assured markets, profitable price levels, and assess to simple and appropriate agro-techniques. The successful establishments of medicinal plants sector may help in raising rural employment, boost commerce around the world, and contribute to the health of millions.
Assistance and facilities provided by the National Medicinal Plants Board, Ministry of Health & Family Welfare, Government of India and the G.B. Pant Institute of Himalayan Environment and Development, during the preparation of this manuscript is gratefully acknowledged. The paper has also benefited from many discussions at a workshop 'Expert Consultations on Medicinal Plants' held on 30–31 October 2003 in Dehradun, India organized by Centre for Sustainable Development, India and Royal Tropical Institute, The Netherlands. We thank T. Ticktin, C.A. Taylor and two anonymous reviewers for helpful comments on the earlier drafts of the manuscript.
- Kala CP: Studies on the Indigenous Knowledge, Practices and Traditional Uses of Forest Products by Human Societies in Uttaranchal State of India. 2004, Almora: GB Pant Institute of Himalayan Environment and DevelopmentGoogle Scholar
- Stein R: Alternative remedies gaining popularity. The Washington Post. Friday, May 28, 2004Google Scholar
- Kala CP: Revitalizing traditional herbal therapy by exploring medicinal plants: A case study of Uttaranchal State in India. Indigenous Knowledges: Transforming the Academy, Proceedings of an International Conference. 2004, Pennsylvania: Pennsylvania State University, 15-21.Google Scholar
- KIT: Cultivating a Healthy Enterprise. Bulletin 350. 2003, Royal Tropical Institute, Amsterdam, The NetherlandsGoogle Scholar
- Raven PH: Medicinal plants and global sustainability: The canary in the coal mine. Medicinal Plants: A Global Heritage, Proceedings of the International conference on medicinal plants for survival. 1998, New Delhi: International Development Research Center, 14-18.Google Scholar
- Myers N: The world's forests and human population: the environmental interconnections. Population and Development Review. 1991, 16: 1-15.Google Scholar
- Lacuna-Richman C: The socio-economic significance of subsistence non-wood forest products in Leyte, Philippines. Environmental Conservation. 2002, 29: 253-262. 10.1017/S0376892902000152.View ArticleGoogle Scholar
- Kala CP: Medicinal Plants of Indian Trans-Himalaya. 2002, Dehradun: Bishen Singh Mahendra Pal SinghGoogle Scholar
- Farooquee NA, Majila BS, Kala CP: Indigenous knowledge systems and sustainable management of natural resources in a high altitude society in Kumaun Himalaya, India. Journal of Human Ecology. 2004, 16: 33-42.Google Scholar
- Kala CP: Current status of medicinal plants used by traditional Vaidyas in Uttaranchal state of India. Ethnobotany Research and Applications. 2005, 3: 267-278.Google Scholar
- Kala CP: Ethnobotanical Survey and Propagation of Rare Medicinal Herbs in the Buffer Zone of the Valley of Flowers National Park, Garhwal Himalaya. 1998, Kathmandu: International Centre for Integrated Mountain DevelopmentGoogle Scholar
- Nautiyal S, Rao KS, Maikhuri RK, Negi KS, Kala CP: Status of medicinal plants on way to Vashuki Tal in Mandakini Valley, Garhwal, Uttaranchal. Journal of Non-Timber Forest Products. 2002, 9: 124-131.Google Scholar
- Jablonski D: Extinction: past and present. Nature. 2004, 427: 589-10.1038/427589a.PubMedView ArticleGoogle Scholar
- Kala CP: Status and conservation of rare and endangered medicinal plant in the Indian trans-Himalaya. Biological Conservation. 2000, 93: 371-379. 10.1016/S0006-3207(99)00128-7.View ArticleGoogle Scholar
- Shiva MP: Inventory of Forestry Resources for Sustainable Management and Biodiversity Conservation. 1996, New Delhi: Indus Publishing CompanyGoogle Scholar
- Prajapati ND, Purohit SS, Sharma AK, Kumar T: A Handbook of Medicinal Plants. 2003, Jodhpur: AgrobiosGoogle Scholar
- Rao MR, Palada MC, Becker BN: Medicinal and aromatic plants in agro-forestry systems. Agroforestry Systems. 2004, 61: 107-122. 10.1023/B:AGFO.0000028993.83007.4b.Google Scholar
- Singh DK, Hajra PK: Floristic diversity. Biodiversity Status in the Himalaya. 1996, New Delhi: British Council, 23-38.Google Scholar
- Samant SS, Dhar U, Palni LMS: Medicinal Plants of Indian Himalaya: Diversity Distribution Potential Values. 1998, Almora: G.B. Pant Institute of Himalayan Environment and DevelopmentGoogle Scholar
- Kala CP, Mathur VB: Patterns of plant species distribution in the trans-Himalayan region of Ladakh, India. Journal of Vegetation Science. 2002, 13: 751-754. 10.1658/1100-9233(2002)013[0751:POPSDI]2.0.CO;2.View ArticleGoogle Scholar
- Chatterjee D: Studies on the endemic flora of India and Burma. Journal of Royal Asiatic Society Bengal. 1939, 5: 19-67.Google Scholar
- Dhyani PP, Dhar U: Myrica esculenta Box myrtle Kaphal: A promising underexploited tree crop of the Himalaya. 1994, Almora: G.B. Pant Institute of Himalayan Environment and DevelopmentGoogle Scholar
- Samant SS, Dhar U, Rawal RS: Diversity and distribution of wild edible plants of the Indian Himalaya. Plant Diversity of the Himalaya. Edited by: Pande PC, Samant SS. 2001, Nainital: Gyanodaya Prakashan, 421-482.Google Scholar
- Arora RK, Nayar ER: Wild relatives of crop plant in India. NBPGR Science Monograph. 1984, 7: 97-Google Scholar
- Samal PK, Shah A, Tiwari SC, Agrawal DK: Indigenous health care practices and their linkages with bio-resource conservation and socio-economic development in central Himalayan region of India. Indian Journal of Traditional Knowledge. 2004, 3: 12-26.Google Scholar
- Kala CP: The Valley of Flowers: Myth and Reality. 2004, Dehradun: International Book DistributorsGoogle Scholar
- Cunningham AB: Medicinal plants and sustainable trade. Medicinal Plants: A Global Heritage. Proceedings of the International conference on medicinal plants for survival. 1998, New Delhi: International Development Research Center, 109-121.Google Scholar
- Barany M, Hammett AL, Sene A, Amichev B: Non timber forest benefits and HIV/AIDS in sub-Saharan. African Journal of Forestry. 2001, 99: 36-41.Google Scholar
- Silori CS, Badola R: Medicinal plants cultivation and sustainable development: A case study in buffer zone of the Nanda Devi Biosphere Reserve, Western Himalaya, India. Mountain Research and Development. 2000, 20: 272-279. 10.1659/0276-4741(2000)020[0272:MPCASD]2.0.CO;2.View ArticleGoogle Scholar
- Dhyani PP: Common plant species have potential for economic upliftment of rural populace- Bantulsi a case in point. Hima-Paryavaran. 2000, 12: 11-13.Google Scholar
- Nadkarni KM, Nadkarni AK: Indian Materia Medica. 1908, Bombay: Popular PrakashanGoogle Scholar
- Pearson H: First 'black drug' nears approval. Nature. 2004, [http://www.nature.com/news/2004/040719/full/040719-16.html]Google Scholar
- Kaul MK: Medicinal Plants of Kashmir and Ladakh. 1997, New Delhi: Indus Publishing Company;Google Scholar
- Sharma AB: Global Medicinal Plants Demand May Touch $5 Trillion By 2050. Indian Express. 2004, Monday March 29, 2004Google Scholar
- Joshi K, Chavan P, Warude D, Patwardhan B: Molecular markers in herbal drug technology. Current Science. 2004, 87: 159-165.Google Scholar
- Kala CP, Farooquee NA, Dhar U: Prioritization of medicinal plants on the basis of available knowledge, existing practices and use value status in Uttaranchal, India. Biodiversity and Conservation. 2004, 13: 453-469. 10.1023/B:BIOC.0000006511.67354.7f.View ArticleGoogle Scholar
- Kala CP, Farooquee NA, Dhar U: Traditional uses and conservation of timur (Zanthoxylum armatum DC.) through social institutions in Uttaranchal Himalaya, India. Conservation and Society. 2005, 3 (1): 224-230.Google Scholar
- Uniyal RC, Uniyal MR, Jain P: Cultivation of Medicinal Plants in India: A Reference Book. 2000, New Delhi: TRAFFIC India and WWF India;Google Scholar
- Kala CP: Ethnomedicinal botany of the Apatani in the Eastern Himalayan region of India. 2005, Journal of Ethnobiology and Ethnomedicine, 1 (11): 1-8. [http://www.ethnobiomed.com/content/pdf/1746-4269-1-11.pdf]Google Scholar
- Ghimire SK, McKey D, Aumeeruddy-Thomas Y: Heterogeneity in ethnoecological knowledge and management of medicinal plants in the Himalayas of Nepal: Implication for conservation. Ecology and Society. 2005, 9 (3): 6-[http://www.ecologyandsociety.org/vol9/iss3/art6/]Google Scholar
- Ticktin T: The ecological implications of harvesting non-timber forest products. Journal of Applied Ecology. 2004, 41: 11-21. 10.1111/j.1365-2664.2004.00859.x.View ArticleGoogle Scholar
- Kala CP: Commercial exploitation and conservation status of high value medicinal plants across the borderline of India and Nepal in Pithoragarh. The Indian Forester. 2003, 129: 80-84.Google Scholar
- FAO: State of the World's Forest. 2003, Rome: Food and Agricultural Organization;Google Scholar
- Sundriyal RC, Sharma E: Cultivation of Medicinal Plants and Orchids in Sikkim Himalaya. 1995, Almora: G.B. Pant Institute of Himalayan Environment and DevelopmentGoogle Scholar
- Kala CP: Health traditions of Buddhist community and role of Amchis in trans-Himalayan region of India. Current Science. 2005, 89: 1331-1338.Google Scholar
- Weekley CW, Race T: The breeding system of Ziziphus celata Judd and D.W. Hall (Rhamnaceae), a rare endemic plant of the Lake Wales Ridge, Florida, USA: implications for recovery. Biological Conservation. 2001, 100: 207-213. 10.1016/S0006-3207(01)00024-6.View ArticleGoogle Scholar
- Oostermeijer JGB, Luijten SH, den Nijs JCM: Integrating demographic and genetic approaches in plant conservation. Biological Conservation. 2003, 113: 389-398. 10.1016/S0006-3207(03)00127-7.View ArticleGoogle Scholar
- Kala CP: Indigenous uses, population density, and conservation of threatened medicinal plants in protected areas of the Indian Himalayas. Conservation Biology. 2005, 19: 368-378. 10.1111/j.1523-1739.2005.00602.x.View ArticleGoogle Scholar
- Bevill RL, Louda SM, Stanforth LM: Protection from natural enemies in managing rare plant species. Conservation Biology. 1999, 13: 1323-1331. 10.1046/j.1523-1739.1999.98450.x.View ArticleGoogle Scholar
- Dhyani PP, Kala CP: Current research on medicinal plants: Five lesser known but valuable aspects. Current Science. 2005, 88: 335-Google Scholar
- Hamilton AC: Medicinal plants, conservation and livelihoods. Biodiversity and Conservation. 2004, 13: 1477-1517. 10.1023/B:BIOC.0000021333.23413.42.View ArticleGoogle Scholar
- Anonymous: Conservation Assessment and Management Prioritization for the Medicinal Plants of Jammu-Kashmir, Himachal Pradesh and Uttaranchal. 2003, Bangalore: Foundation for Revitalization of Local Health TraditionsGoogle Scholar
- Kala CP: Medicinal plants of the high altitude cold desert in India: Diversity, distribution and traditional uses. International Journal of Biodiversity Science and Management. 2006, 2: 1-14.View ArticleGoogle Scholar
- Kala CP: Assessment of species rarity. Current Science. 2004, 86: 1058-1059.Google Scholar
- Lozoya X: Ethnobotany and the Search of New Drugs. 1994, England: John Wiley and SonsGoogle Scholar
- Khan IA, Khanum A: Role of Biotechnology in Medicinal and Aromatic Plants. 2000, Hyderabad: Ukaaz PublicationsGoogle Scholar
- Kuniyal CP, Rawat YS, Oinam SS, Kuniyal JC, Vishvakarma SCR: Kuth (Saussurea lappa) cultivation in the cold desert environment of the Lahaul valley, northwestern Himalaya, India: arising threats and need to revive socio-economic values. Biodiversity and Conservation. 2005, 14: 1035-1045. 10.1007/s10531-004-4365-x.View ArticleGoogle Scholar
- Gupta AK, Vats SK, Lal B: How cheap can a medicinal plant species be?. Current Science. 1998, 74: 565-566.Google Scholar
- KIT: Searching Synergy. Bulletin 359. 2004, Amsterdam: Royal Tropical InstituteGoogle Scholar
- Dalton R: Bioprospects less than golden. Nature. 2004, 429: 598-600. 10.1038/429598a.PubMedView ArticleGoogle Scholar
- Green EC, Goodman KJ, Hare M: Ethnobotany, IPR and benefit sharing: the forest people fund in Suriname. Indigenous Knowledge and Development Monitor. 1999, 7: 8-11.Google Scholar
- Koo B, Nottenberg C, Pardey PG: Plants and intellectual property: An international appraisal. Science. 2004, 306: 1295-1297. 10.1126/science.1106760.PubMedView ArticleGoogle Scholar
- Egziabher TBG: Africa proposes. Down To Earth. 2003, 12: 55-Google Scholar
- Schippmann U, Leaman DJ, Cunningham AB: Impact of cultivation and Gathering of Medicinal Plants on Biodiversity: Global Trends and Issues. 2002, Rome: Inter-Department Working Group on Biology Diversity for Food and Agriculture, FAO;Google Scholar
- Kala CP: Indigenous uses and structure of chir pine forest in Uttaranchal Himalaya, India. International Journal of Sustainable Development and World Ecology. 2004, 11 (2): 205-210.View ArticleGoogle Scholar
- Mashelkar RA: India's R & D: reaching for the top. Science. 2005, 307: 1415-1417. 10.1126/science.1110729.PubMedView ArticleGoogle Scholar
- Ahuja AK: Need for a comprehensive approach to medicinal plants. Himalayan Medicinal Plants: Potential and Prospects. Edited by: Samant SS, Dhar U, Palni LMS. 2001, Nainital: Gyanodaya Prakashan, 1-21.Google Scholar
- Anonymous: National Health Policy. 1983, New Delhi: Ministry of Health and Family Welfare, Government of India;Google Scholar
- Pushpangadan P, Kumar B: Ethnobotany, CBD, WTO and the Biodiversity Act of India. Ethnobotany. 2005, 17: 2-12.Google Scholar
- Tolia RS: Patwari, Gharat and Chai. 2004, Dehradun: Bishen Singh Mahendra Pal Singh;Google Scholar
- Rawat RBS, Uniyal RC: Status of medicinal and aromatic plants sector in Uttaranchal: initiatives taken by the Government of India. Financing Agriculture. 2004, 36: 7-13.Google Scholar
- Jain AP, Kumar H: R and D funding in Himalayan region in India: A comparison. Hima-Paryavaran. 1994, 6: 10-11.Google Scholar
- Kumar R: Medicinal, aromatic and herbal crops. Financing Agriculture. 2004, 36: 3-5.Google Scholar
- Prahalathan S: Export potential of Indian medicinal plants and products. Financing Agriculture. 2004, 36: 33-36.Google Scholar
- Kaushik P, Dhiman AK: Medicinal Plants and Raw Drugs of India. 1999, Dehradun: Bishen Singh Mahendra Pal Singh;Google Scholar
- Olsen CS, Larsen HO: Alpine medicinal plant trade and Himalayan mountain livelihood strategies. The Geographical Journal. 2003, 169: 243-10.1111/1475-4959.00088.View ArticleGoogle Scholar
- Joshi P, Dhawan V: Swertia chirayita – an overview. Current Science. 2005, 89: 635-640.Google Scholar
- Kumar S: The Economic Plants of North East India. 2000, Jodhpur: Scientific PublisherGoogle Scholar
- Anonymous: Herbals in India: Opportunities, Challenges and Initiatives by NABARD. 2004, National Bank for Agriculture and Rural Development, India;Google Scholar
- Anonymous: AYUSH in India 2005. 2006, New Delhi: Department of AYUSH, Government of IndiaGoogle Scholar
- Jain SK: Dictionary of Indian Folk Medicine and Ethnobotnay. 1991, New Delhi: Deep PublicationsGoogle Scholar
- Nautiyal MC, Nautiyal BP: Agrotechniques for High Altitude Medicinal and Aromatic Plants. 2004, Dehradun: Bishen Singh Mahendra Pal SinghGoogle Scholar
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