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Performance of Sweet Sorghum (Sorghum bicolor) Cultivars as a Source of Green Fodder Under Varying Levels of Nitrogen in Semi-arid Tropical India

Mishra, J. S., Kumar, Rakesh, Rao, S. S.
Sugar tech 2017 v.19 no.5 pp. 532-538
Sorghum bicolor, cultivars, forage, leaf area, leaves, nitrogen, sweet sorghum, India
The objective of this study was to evaluate the performance of sweet sorghum cultivars as a source of green fodder under the varying nitrogen levels. Application of 120 kg N ha⁻¹ recorded significantly taller plants, more number of green leaves/plant, larger leaf length and breadth, higher leaf area than 80 kg N ha⁻¹. The fresh and dry fodder yield showed the significant variation with increase in nitrogen rates from 80 to 120 kg N ha⁻¹. Application of 120 kg N ha⁻¹ increased green and dry fodder yields by 8.86 and 12.1% over 80 kg N ha⁻¹, respectively. Among the cultivars, ‘SSV 74’ (62.89 t ha⁻¹) being on a par with ‘SSV 84’ (58.46 t ha⁻¹), ‘CSH 22SS’ (58.21 t ha⁻¹), ‘CSV 19SS’ (57.62 t ha⁻¹) and ‘CSV 24SS’ (57.01 t ha⁻¹) produced significantly highest green fodder yield over rest of the cultivars. However, ‘RSSV 167’ (49.4 t ha⁻¹) recorded markedly the lowest green fodder yield but noted on par with ‘RSSV 104’ (52.4 t ha⁻¹). Application of 120 kg N ha⁻¹ markedly improved the net returns (₹26,138 ha⁻¹) over 80 kg N ha⁻¹. Among cultivars, ‘SSV 74’ (₹30,145 ha⁻¹) being on a par with ‘SSV 84’ (₹30,145 ha⁻¹), ‘CSH 22SS’ (₹25,920 ha⁻¹) and ‘RSSV 167’ (₹30,145 ha⁻¹) recorded significantly higher net returns as compared to rest of the cultivars.