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Agronomic Response of Sorghum [Sorghum bicolor (L) Moench] Variety to Density, Nitrogen and Blended Fertilizer Rates for Yield Components and Seed Quality in Southern Ethiopia

Research Paper | November 15, 2022

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Yohannes Erkeno Handiso, Mulugeta Abebe Mamo

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Int. J. Biosci.21( 5), 172-183, November 2022

DOI: http://dx.doi.org/10.12692/ijb/21.5.172-183


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Low soil fertility and density are the major yields and seed quality limiting constraints. Therefore, the field experiment was conducted to elucidate the effect of density, nitrogen and NPS rates on yield components and seed quality of sorghum. The treatments consisted of a factorial combination of 4 density, 3 nitrogen and NPS rates laid out in a Randomized Complete Block Design with three replications. The results revealed that days to flowering, maturity, plant height, leaf area, productive tillers, grain yield, 1000 kernel weight, normal seedlings, and vigour index i and ii were significantly affected by the main and interaction effects of nitrogen and NPS fertilizers. The main effects of density influenced days to flowering, leaf area index, grain yield, productive tillers and 1000 kernel weight. Therefore, it could be concluded that the application of 46 kg N, 100 kg NPS ha-1 density, of 66 666 plants was economically profitable in the study area.


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Agronomic Response of Sorghum [Sorghum bicolor (L) Moench] Variety to Density, Nitrogen and Blended Fertilizer Rates for Yield Components and Seed Quality in Southern Ethiopia

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