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Three groundnut and one maize improved varieties were studied for their yield and yield components by intercropping them using different spatial arrangement.Intercropping legumes with maize in different spatial arrangements improve the quality and natural soil fertility, and reduce fertilizer use and boost crop yield.Crops were planted at the research field of AAMUSTED using a 3 x 3 factorial experiment laid in Randomized Complete Block Design (RCBD) plus four sole crops with four replications during the minor rainy season of 2021 and the major rainy season of 2022.The aim was to determine the yield and yield components of different varieties of groundnut with maize intercropping system as affected by different spatial arrangement.Factors studied were; (i) groundnut varieties (Yenyawoso, Dehye, and Oboshie), Opeaburo maize variety and (ii) spatial arrangements; (SP1 = 1-row maize alternating with 1-row groundnut, SP2 = 1-row maize alternating with 2 rows groundnut, and SP3 = 1-row maize alternating with 3 rows groundnut) plus four sole crops.The combined analysis showed that Opeaburo + Oboshie x SP2 and SP3 interactions had the higher number of pods per plant, 100-seed weight, and grain yield of groundnut, while for maize the same treatments produced the highest cob diameter, cob length, 100-seed weight, shelling percentage and grain yield across both cropping seasons.Opeaburo + Yenyawoso x SP1 interaction produced highest number of seeds per pod across both seasons.For shelling percentage of groundnut, Opeaburo + Yenyawoso x SP2 recorded the highest for 2021 minor season whereas Opeaburo + Dehye x SP3 had the greatest for the 2022 major cropping season.For Land Equivalent Ratio (LER), Opeaburo + Oboshie x SP2 and SP3 interaction had the greatest.For best yield and heavy grains of maize and groundnut, it is recommended that farmers should intercrop Opeaburo with Oboshie by alternating with 2-rows and/or 3-rows.
Essilfie et al. (Mon,) studied this question.