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Table 1 Basic information regarding the seven sociolinguistic groups surveyed in the study area

From: Folk taxonomy and traditional uses of common bean (Phaseolus vulgaris L.) landraces by the sociolinguistic groups in the central region of the Republic of Benin

  Municipalities of
Banté Dassa-zoumé Glazoué Ouèssè Savalou Savé
Sociolinguistic groups surveyed Nago, Ifé Idaatcha, Fon Mahi, Adja Nago, Tchabè Mahi, Idaatcha Tchabè, Idaatcha
Population 107,181 112,122 124,431 142,017 144,549 87,177
Climate Transition between subequatorial and Sudano-Guinean climate Sub-equatorial climate Sub-equatorial climate Tropical climate intermediate between Guinean and Sudanese climate Transition between subequatorial and Sudano-Guinean climate Tropical climate intermediate between Guinean and Sudanese climate
Area (Km2) 2695 1711 1750 3200 2674 2228
Annual rainfall (mm) 600–1600 900–1100 959.56–1255.5 1100–1200 864–1637.3 1100–1300
Annual temperature (°C) 23 to 37 21 to 36 24 to 29 24 to 26 23 to 36 20 to 34
Vegetation Wooded savannah area with part of classified forest Wooded savannah and shrubby cut deciduous and semi-deciduous forests The vegetation consists of natural formations The plant cover is made of wooded savannah, shrubby, gallery forests and part of classified forest The vegetation consists of islands of dense forest, savannah, fallow land and fields. Graminaceous savannah with trees and shrubs. Classified forest
Soils Tropical ferruginous soils Tropical ferruginous soils Soils sandy clay, hydromorphic and tropical ferruginous Soils are clayey, hydromorphic and tropical ferruginous Tropical ferruginous soils Tropical ferruginous soils
Farming system Cassava-Yam-Maize-based Cassava-Soybean-Maize-based Yam-Rice-Cassava-based Cassava-Yam-Groundnut-based Cassava-Yam-Maize-based Cassava-Yam-Soybean-based
Number of surveyed villages 4 4 3 4 4 4
  1. Data assembled from INSAE [77], Yabi et al. [78], and Akoegninou et al. [79]