MANINDER KAUR*, HARPREET KAUR OBEROI AND ASHLESHA
Forages, Millets and Nutrition Section,
Department of Plant Breeding and Genetics
PAU, Ludhiana-141 004 (Punjab), India
*(e-mail : manindersindhu@pau.edu)
(Received : 31 May 2021; Accepted : 28 June 2021)
SUMMARY
A study was conducted during kharif season of 2020 on sandy loam soils of forage research farm of PAU, Ludhiana to study the interactive effects of different fertility levels {control, 50:10:12.5, 100:20:25 (recommended dose of fertilizers) and 150:30:37.5 kg N: P2O5: K2O per ha} and five genotypes (SPV 2584, SPV 2587, SPV 2593, CSV 21F and CSV 30F) on growth, yield, quality and disease incidence of single cut forage sorghum. The experiment was laid out in Randomized Complete Block Design (RCBD), using three replications. It was revealed from the results that SPV 2584 owing to its profused tillering gave highest green fodder yield to the tune of 76.4% over the check genotype CSV 30F. The genotypes SPV 2593 and CSV 21F remained statistically at par with SPV 2584 with regards to green fodder productivity. The genotype SPV 2584 also remained superior in terms of quality of green fodder recording highest value of crude protein content (6.36%) and lowest value of hydrocyanic acid (44.7%) over other genotypes. The effect of fertility levels was found to be significant upto 100:20:25 kg NPK/ha giving 21.6 and 26.6% increase in green fodder and dry matter yield, respectively with 50 percent increase in fertility level. The quality of forage sorghum increased with increase in fertility level with corresponding increase in HCN also. The effect of fertility and genotypes on disease severity was found to be significant and highest disease reduction of anthracnose (35.1%) was recorded with application of 100:20:25 kg NPK/ha.
Key words:Growth, genotypes, fertility, sorghum, anthracnose