Effets De La Variabilite Climatique Sur Le Rendement De Quelques Cultures Vivrieres Dans Le Nord-Est Du Benin

Abstract

écosystèmes, Conservation et valorisation des espèces endogènes Laboratoire de Recherche en Biologie Appliquée (LARBA) Ecole Polytechnique d'Abomey-Calavi (EPAC) Chi2 test for perception data. Results, showed that the linear models using the anomalies of crop yields and the anomalies of climate parameter revealed a high link between both parameters. It stands out an over significance of the variables of temperature and rainfall on the yield of maize, cowpea, sorghum, and groundnut. In fact, the meteorological data (T max, Tmoy, Tmin, Pmoy) influence yields of foodcrops varied regardind districts and crops. Farmers perceive climate variability and their perceptions were the flooding, rain irregularity observed in Kandi and Nikki while in Bembèrèkè and Tchaourou are the rarity of the rains and the strong winds. These events are caused, according to the respondents, deforestation (90%), natural phenomena (57.92%), non-compliance with prohibitions (42.92%), with consequences for crops, the decline in maize, cowpea, sorghum, and groundnut yields.