Farmers' perception on the importance of variegated grasshopper (Zonocerus variegatus (L.)) in the agricultural production systems of the humid forest zone of Southern Cameroon

Table 7 Influence of season on the population pressure (%) of Zonocerus variegatus on annual and perennial crops in the humidforest zones of Southern Cameroon.

Crops	AECD-Blocks	Long dry season	Short rainy season	Short dry season	Long rainy season	p-value
Annual Crop	Yaoundé	72	4	16	9	<0.0001
	Mbalmayo	70	7	11	13	<0.0001
	Ebolowa	64	10	27	0	<0.0001
	p-value	NS	NS	NS	NS
	Means	69	7	18	7	<0.0001
Young Perennial Crops	Yaoundé	25	3	12	1	<0.05
	Mbalmayo	36	5	10	10	<0.05
	Ebolowa	63	9	29	0	<0.0001
	p-value	<0.05	NS	<0.05	NS
	Means	41	5	17	4	<0.0001
Female
Annual Crop	Yaoundé	76	1	13	10	0.0054
	Mbalmayo	68	5	12	15	0.0071
	Ebolowa	67	9	24	0	0.0015
	p-value	NS	NS	NS	NS
	Means	69	5	16	8	<0.0001
Young Perennial Crops	Yaoundé	15	0	5	0	NS
	Mbalmayo	31	6	13	10	NS
	Ebolowa	69	4	27	0	0.0017
	p-value	NS	NS	NS	NS
	Means	38	3	15	3	0.0014
Male
Annual Crop	Yaoundé	68	6	19	7	0.0061
	Mbalmayo	72	9	9	10	0.0080
	Ebolowa	61	10	29	0	0.0015
	p-value	NS	NS	NS	NS
	Means	67	8	19	6	<0.0001
Young Perennial Crops	Yaoundé	34	6	18	2	NS
	Mbalmayo	40	3	7	9	NS
	Ebolowa	57	13	30	0	0.0017
	p-value	NS	NS	NS	NS
	Means	44	7	18	4	0.0002

The values are averages of the scores for 10 groups of farmers (5 male and 5 female groups) interviewed per AECD-Blocks; p-value is the significance levels of a non parametric test of Kruskal-Wallis; NS = nonsignificant (p > 0.05); AECD-Blocks = Agro-Ecological, Cultural and Demographic Blocks.

ISSN: 1746-4269