Table 1.
The regions in Ghana and major districts where there is maize production.
Table 2.
The agro-ecological zones and their maize cultivation calendar in Ghana.
Fig 1.
The model framework of stacking ensemble learning model.
Table 3.
Descriptive statistics of the maize yield for each of the regions in Ghana.
Table 4.
Mean and coefficient of variation analysis of the climate variables.
Fig 2.
Trend of maize yield in each of the regions of Ghana.
Fig 3.
Combined impact of average temperature and precipitation on maize yield in the different regions of Ghana.
Table 5.
The results of the optimal parameters for each base model after performing Grid Search.
Table 6.
Performance metric of machine learning models.
Fig 4.
The feature importance of the climate variables in predicting maize yield in each region of Ghana.