Parameters Centre North-West Coefficients P> t Coefficients P> t Constant 132 0.003 490 0.000 ASI -3.12 0.000 -5.91 0.000 RSO 0.194 0.000 0.154 0.003 NRD 1.65 0.000     P> F 0.000   0.000   ASI = agro-climatic stress index; RSO = rainfall from September to October (mm); NRD: number of rainy days; F: F values; t: Student test.

Table 7: Regression equations of the cashew nut yield and their statistical tests regarding the geographic area.