Solanum scabrum Miller is one of the African leafy vegetables rich in nutrients and mainly consumed by many resource‐poor communities in some parts of Africa. The effect of nitrogen (N) fertilizer application and plant population on the yield of S. scabrum was investigated. Solanum scabrum was grown under 0, 100, 200, 300, and 400 kg·ha −1 ·N (as limestone ammonium nitrate) and 100,000, 160,000, 220,000, and 280,000 plants per hectare in a randomized complete block design with three replications. Data were collected as marketable (shoot), nonmarketable, and total biomass yield. The data were subjected to analyses of variance using GenStat 12 software, and the means were separated using Tukey’s honest significant difference (HSD) test at the 5% significance level. The marketable yield was higher in Season 1 than in Season 2, probably due to the higher rainfall in Season 1. Relative to marketable (shoot) fresh mass, the optimum fertilizer application rate of 200 kg·ha −1 and 100,000 plants ha −1 were the optimum growth conditions for S. scabrum in this study. Smallholder farmers can use these optimum growth conditions to improve the production of this valuable crop.
Ndlovu et al. (Thu,) studied this question.
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