Evaluation of RainfallandTemperature Conditions for a Perennial Crop in Tropical Wetland: A Case Study of Cocoa in Cˆote d’Ivoire

Abstract

+e rainfall and temperature conditions are evaluated for the first time during the 1989–2006 period, in six main cocoa production areas (Abengourou, Agboville, Daloa, Dimbokro, Guiglo, and Soubre) of Cˆote d’Ivoire using data from SODEXAM (groundbased observation) and the ex-CAISTAB. Statistical analysis shows an important sensitivity of cocoa production to rainfall conditions in all regions. It is worth noting that only the major rainy season from April to July and the rainfall amount of the little dry season from August to September affect the cocoa production for an 80% confidence level. +is influence varies from one cacao production area to another. Moreover, the effects related to temperature on the cocoa yield seem to represent a smaller contribution of climate impact than those related to precipitation during the studied period. +e temperature change remains in the acceptable range of values, between 25°C and 29°C, which is a favorable condition for cocoa growing. +ese findings are obtained despite the significant contributions from nonclimatic factors, to year-to-year variability in cocoa production.