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The experiment was conducted to evaluate the growth and yield performance of Bambara nuts (Vigna subterramean (L) Verdc) under a cropping system (bambara nuts/maize intercrop) and different plant spacing. The experiment was conducted during the 2017 and 2018 cropping seasons at the Teaching and Research Farm of the Department of Crop Production and Horticulture, Modibbo Adama University of Technology Yola, Nigeria. The field experiments were factorial design laid out in a split plot design. The treatments consisted of three (3) plant spacings of 20, 25 and 30 cm which were assigned to main plot treatment while maize variety samaz 17 and bambara nut were assigned to the sub- plots treatment was replicated three (3) times. Performance parameters measured included establishment count expressed in percentage, plant height, harvest index, days to 50% flowering, shelling percentage, weight of dry pod, weight of seed and total yields. Results showed that plant spacing and maize-bambara nut intercrop has no significant effect on establishment, plant height, harvest index, days to 50 % podding and shelling percentage of bambara nuts. Results also showed that plant spacing and maize-bambara nut intercrop had significant effect on weight of dry pod, 100 seed weight and total grain yield of bambara nut. It is recommended that a wider plant spacing of 30 cm in a maize – bambara nut intercrop should be observed for meaningful yield in Yola.
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