Performance of soybean varieties under different sowing times and seed rates
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Date
2021-08-16
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Palampur
Abstract
The present investigation entitled “Performance of soybean varieties under
different sowing times and seed rates.” was conducted at Research Farm of Department of
Agronomy, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur during the Kharif
2020. The experiment comprising three dates of sowing (last week of May, 2nd week of
June and 4th week of June) three varieties (Himso1685, Harit soya and Himsoya), and two
seed rates (75 kg seed/ha and 100 kg seed/ha) was laid out in factorial randomized block
design with three replications. Crop sown in the 2nd week of June recorded significantly
higher dry matter accumulation, more number of branches per plant, pods per plant,
grains per pod, 1000-grain weight, grain (1982.61 kg/ha) and straw yield (3214.78 kg/ha),
higher protein content, higher content and uptake of nitrogen, phosphorus and potassium
and benefit: cost ratio than other dates of sowing. Amongst the varieties, variety
Himso1685 was significantly superior over other varieties in respect of dry matter
accumulation, number of branches per plant, pod per plant, grains per pod, 1000 - grain
weight, grain yield (1955.56 kg/ha) and straw yield (3191.0 kg/ha), higher content and
uptake of nitrogen, phosphorus and potassium, higher protein content and benefit: cost
ratio. Variety Him soya was earliest in achieving 50% flowering, pod formation and
maturity stage than other varieties. Use of 100 kg seed/ ha seed rate recorded significantly
higher dry matter accumulation, more number of branches per plant, pod per plant, grains
per pod, 1000-grain weight, grain yield (1832.52 kg/ha), straw yield (3123.59 kg/ha)
higher uptake of nitrogen, phosphorus and potassium and benefit: cost ratio than seed rate
75 kg /ha seed rate.