Seed management’s influences on nodulation and yield of improved variety of soybean (Glycine max)

AbstractA pot study was carried out on an improved soybean variety (TGX 1448-2E) to assess the effects of seed management on its nodulation and yield. The experiment was in factorial combinations with six replicates at the teaching and research farm of University of Abuja. The factors were 2 soils, 2 levels of phosphorus fertilizer (-P and + P), and 2 seed sources (farmer’s and researcher’s managed seeds). P was applied as triple superphosphate at 30 kg P ha-1. Destructive sampling was done at 8 weeks after planting to record growth parameters and nodulation. At maturity, the number and weight of pods, weight of 50 seeds and total seed yield were recorded. The results showed that generally researchers’ managed seeds showed a significantly higher mean values than farmers’ managed seeds. The pod and total seed weight from researchers’ seeds were 106.26 g and 52.43 g per plant respectively against the farmers’ managed seed with pod weight of 80.23 g and total seed weight of 44.35 g per plant. P application influenced significantly the weight of nodules, pods and seeds per plant. This significant lower performance observed in farmers’ managed seeds could have resulted from factors such poor seed handling or mix up during harvesting or storage, poor quality seed selection for planting.

Keywords Glycine max, seed management, phosphorus, nodulation, grain legume.

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