JAGAMOHAN NAYAK*, S. K. INTODIA, ARVIND VERMA, HIRAK BANERJEE AND G. S. GURJAR
Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia-741 252 (W. B.), India
Department of Agronomy, Controller of Examinations, MPUAT, Udaipur-313 001 (Rajasthan), India
Department of Agronomy, Rajasthan College of Agriculture, MPUAT, Udaipur-313 001 (Rajasthan), India
Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia-741 252 (W. B.), India
Department of Agronomy, Rajasthan College of Agriculture, MPUAT, Udaipur-313 001 (Rajasthan), India
*(e-mail : jaganayak532@gmail.com)
(Received : 5 March 2022; Accepted : 24 March 2022)
SUMMARY
A field investigation was carried out during Kharif 2018, at the Instructional Farm (Agronomy), Rajasthan College of Agriculture, Udaipur to study the nutrient management impacts on grain and stover quality and nutrient uptake of sorghum cultivars under rainfed situation. The experiment comprised of three fertilizer application levels (75, 100 and 125% RDF) and nine genotypes (SPH 1820, SPH 1849, CSH 25, CSH 30, SPV 2433, SPV 2437, SPV 2438, CSV 27 and CSV 31), replicated thrice in a factorial randomized block design. Results revealed that fertilization with 125% RDF improved the protein content, protein yield in grain and stover as well as stover quality over 75% RDF and 100% RDF applications. The N, P2O5 and K2O uptake was higher by 18.14, 14.57 and 12.93 % with application of 125% RDF over 100% RDF respectively. Among the genotypes, SPH 1849 was superior in terms of protein content, grain protein yield and stover quality (acid detergent fibre and neutral detergent fibre) than other genotypes. The genotype CSH 25 recorded higher stover protein yield, along with nitrogen and phosphorus uptakes, whereas largest potassium accumulation in straw was observed in SPV 2438 genotype.
Key words: Sorghum stover, nutrient management, protein content, NDF, ADF, genotype, uptake