Optimization of seed rate for late sown wheat genotypes
Loading...
Date
2019-07
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
CCSHAU, Hisar
Abstract
A field experiment entitled “Optimization of seed rate for late sown wheat genotypes” was conducted during Rabi season of 2017-18 at wheat research farm of CCS Haryana Agricultural University, Hisar. The experiment was comprised of three wheat genotypes viz. WH 1124, HD 3059 and DBW 90 as main plot treatments and five seed rates viz. 100.0 kg/ha, 112.5 kg/ha, 125.0 kg/ha, 137.5 kg/ha and 150.0 kg/ha as sub plot treatments. Experiment was laid out in split plot design with four replications.
Based on the one year research investigation it was concluded that genotypes and seed rates significantly affected growth, yield attributes and yield of late sown wheat. Among genotypes, WH 1124 was found most suitable and economical wheat genotype for late sown condition, which was recorded with significantly higher biological yield (11858 kg/ha), grain yield (4843 kg/ha), effective tillers/mrl (85.2), grains per spike (53.5), boldest grain (38.7 g), LAI at 90 DAS (4.54), dry matter accumulation/mrl (153.4 g), plant height (98.2 cm), net returns (Rs. 52735/ha) and B: C (1.68) at harvest.
Among seed rates, highest seed rate of 150 kg/ha was found optimum to obtain higher yield and economical performance for late sown wheat. Yield attributes except effective tillers/mrl were reduced significantly with increase of seed rate from 100 – 150 kg/ha. Seed rate of 150 kg/ha being statistically at par with 125 and 137.5 kg/ha was recorded with significantly higher biological yield (11900 kg/ha), grain yield (4909 kg/ha), effective tillers/mrl (86.5), LAI at 90 DAS (4.50), dry matter accumulation/mrl (153.6 g), plant height (98.4 cm), net returns (Rs. 52906/ha) and B: C (1.68) at harvest, which were 6.2, 9.7, 9.1, 23.0, 8.8, 3.6, 18.9 and 6.3 per cent higher over 100 kg/ha seed rate, respectively. So, wheat genotype WH 1124 should be sown with a seed rate of 150 kg/ha to obtain maximum yield and economics in late sown condition.