Abstract
Background: Intercropping is the practice of growing two or more crops nearby: in the same row or bed, or rows or strips near enough to allow biological interactions. Advantages of inter cropping include: improving soil’s nutrients to better support crops' growth and development thus improving yields; it improves soil-water retention and diversifies the farmers' incomes in case of failure for one crop. It is one of the natural methods for management of crop pests and diseases. Inter cropping maize and beans is one of the climate-smart agricultural approaches used to boost crop production across the globe. However, some smallholder farmers have a negative attitude toward it due to limited knowledge regarding its benefits. The study aimed at establishment of the effect of intercropping maize and beans on the maize yields in Isingiro District, South Western Uganda. Methods: The experiment was conducted in two seasons (March-May 2020 and August- November 2021). Standard agronomical practices were followed from planting to harvesting, after which the dry weight of maize was measured and recorded. Data analysis was done using ONEWAY ANOVA in R Software Version 4.2.2. Result: Results show that intercropping maize and beans in season one significantly increased maize yields (p less than 0.001) more than it did in season two (p=0.0211). The main effect of Season is statistically significant and large (p less than .001). The main effect of Treatment is statistically significant and large (p less than .001). The study concluded that reduced rainfall negatively affects maize yields and intercropping Longe5 with NABE16 increases maize yields. Early planting and good agronomic practices were recommended to improve maize productivity.
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