Effect of sowing time and integrated weed management on growth and yield of garden pea
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Date
2022-12-15
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CSK HPKV, Palampur
Abstract
The present investigation was undertaken to study the effect of sowing time and
integrated weed management on growth and yield of garden pea. The experiment
comprising of 20 combinations i.e. four sowing dates (3rd week of October, 1st week
of November, 3rd week of November and 4th week of November) and five weed
control treatments viz. weedy check, weed-free (3 hand-weedings), imazethapyr
100g/ha (pre-emergence), imazethapyr 75g/ha (pre-emergence) followed by
clodinafop 60g/ha ( post-emergence 45-60 DAS) and imazethapyr 75g/ha (pre emergence) + hand weeding was conducted in complete randomized block design
with three replications at the Research Farm of Department of Vegetable Science and
Floriculture, CSKHPKV, Palampur during rabi 2021-22. Date of sowing and weed
control treatments exhibited significant variation on different growth and yield
parameters of garden pea. Results revealed that weed count and dry matter
accumulation increased with advancement of crop growth and delay in sowing time
from 3rd week of October to 4th week of November. Weed-free (3 hand-weedings) and
imazethapyr 75g/ha (pre-emergence) + hand weeding provided better weed control
compared to the other treatments. Among sowing dates, 3rd week of October resulted
in maximum number of primary branches per plant, number of nodes per plant, plant
height, number of pods per plant, pod length, number of seeds per pod, pod yield per
hectare, shelling percentage, protein content, gross returns, net returns and benefit
cost ratio. Among weed control treatments, weed-free (3 hand-weedings) and
imazethapyr 75g/ha (pre-emergence) + hand weeding were the most promising
treatments for number of pods per plant, pod yield, shelling percentage, haulms yield,
seed yield per plant and 100-seed weight. Three hand-weedings (weed-free) gave
highest gross returns (2.80 lakh/ha) but highest net return was found in imazethapyr
75g/ha + hand weeding (1.86 lakh/ha). Highest benefit cost ratio was found in
imazethapyr 75g/ha + hand weeding (3.08) due to the high labour cost. The
interaction effect between sowing dates and weed control treatments reaveled that the
new genotype of garden pea, APL5-55 must be sown between 3rd week of October
and 1st week of November with application of imazethapyr 75 g/ha + hand-weeding.