International Journal of Agricultural Engineering

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Response of Single-Cut Fodder Sorghum Genotypes to Fertility Levels under Rainfed Conditions of Rajasthan


Affiliations
1 Department of Agriculture, Bhagwant University, Ajmer (Rajasthan), India
2 Department of Agricultural Biotechnology, Bhagwant University, Ajmer (Rajasthan), India
     

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The objectives were to study the appropriate sorghum fodder variety for this zone, work out the optimum fertility level for test genotypes and to study the economically viable treatment. Soil of experimental field was calcareous in nature, medium in available nitrogen (272.00), phosphorus (21.69) and high in available potassium (284.60). The experiment consisted of 24 treatment combinations comprising four levels of fertility (50, 75, 100 and 125% RDF) and six varieties (SPV-2185, SPV-2191, CSV-21F, HC- 308, CSV-30F and PC-1080) laid out in Factorial Randomized Block Design and replicated thrice. The result showed that among the genotypes, SPV-2185 produced maximum plant height, DMA at 25, 50DAS and at harvest, stem girth and number of leaves plant-1 at harvest, green and dry fodder yield, crude protein, ether extract, crude fibre mineral ash content and TDN in fodder. This genotype also estimated significantly gross and net returns over rest of the genotypes. However, maximum HCN content at 25 and 50DAS, organic carbon, available P and K status in soil after harvest with variety SPV-2191. Genotype CSV-21F produced maximum nitrogen status in soil. An application of 125% RDF recorded maximum plant height, stem girth, number of leaves at harvest, dry matter accumulation at various growth stages, green fodder and dry fodder yield, crude protein, crude fibre, ether extract, mineral ash content, TDN, HCN at 25 and 50 DAS, available organic carbon nitrogen phosphorus and potassium in soil after harvest over lower doses in all the above parameters. Highest nitrogen free extract were obtained under 50% RDF while, the lowest being recorded fewer than 125% RDF. In case of gross return, net return and B:C ratio with application of 125% RDF recorded significantly higher over 50% RDF, 75% RDF and 100% RDF.

Keywords

DMA, TDN, HCN, SPV-2191, CSV-21F.
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  • Response of Single-Cut Fodder Sorghum Genotypes to Fertility Levels under Rainfed Conditions of Rajasthan

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Authors

Ravi Shanker Meena
Department of Agriculture, Bhagwant University, Ajmer (Rajasthan), India
Devendra Singh
Department of Agriculture, Bhagwant University, Ajmer (Rajasthan), India
Bhanwar Lal Jat
Department of Agricultural Biotechnology, Bhagwant University, Ajmer (Rajasthan), India

Abstract


The objectives were to study the appropriate sorghum fodder variety for this zone, work out the optimum fertility level for test genotypes and to study the economically viable treatment. Soil of experimental field was calcareous in nature, medium in available nitrogen (272.00), phosphorus (21.69) and high in available potassium (284.60). The experiment consisted of 24 treatment combinations comprising four levels of fertility (50, 75, 100 and 125% RDF) and six varieties (SPV-2185, SPV-2191, CSV-21F, HC- 308, CSV-30F and PC-1080) laid out in Factorial Randomized Block Design and replicated thrice. The result showed that among the genotypes, SPV-2185 produced maximum plant height, DMA at 25, 50DAS and at harvest, stem girth and number of leaves plant-1 at harvest, green and dry fodder yield, crude protein, ether extract, crude fibre mineral ash content and TDN in fodder. This genotype also estimated significantly gross and net returns over rest of the genotypes. However, maximum HCN content at 25 and 50DAS, organic carbon, available P and K status in soil after harvest with variety SPV-2191. Genotype CSV-21F produced maximum nitrogen status in soil. An application of 125% RDF recorded maximum plant height, stem girth, number of leaves at harvest, dry matter accumulation at various growth stages, green fodder and dry fodder yield, crude protein, crude fibre, ether extract, mineral ash content, TDN, HCN at 25 and 50 DAS, available organic carbon nitrogen phosphorus and potassium in soil after harvest over lower doses in all the above parameters. Highest nitrogen free extract were obtained under 50% RDF while, the lowest being recorded fewer than 125% RDF. In case of gross return, net return and B:C ratio with application of 125% RDF recorded significantly higher over 50% RDF, 75% RDF and 100% RDF.

Keywords


DMA, TDN, HCN, SPV-2191, CSV-21F.

References