Abstract
Timely weed management is important to increase productivity in s long-duration crop like pigeonpea. A field study to evaluate the effect of weed management on weed interference, nutrient depletion by weeds and production potential of long duration pigeonpea under irrigated ecosystem was conducted at Agricultural Research Farm, IAS, BHU, Varanasi during 2009-10 and 2010-11. Results revealed that use of imazethapyr @ 0.15 kg ha-1 followed by (fb) paraquat @ 0.4 kg ha-1 40 days after sowing (DAS) significantly (P ≤ 0.05) reduced the weed density, total weed density and total weed dry weight being statistically at par with two hand weeding (HWs) at 25 and 50 days after sowing (DAS). Weed control index, weed persistence index and weed index were the highest in weed- free, 2- HWs and imazethapyr applied @ 0.15 kg ha-1 fb paraquat 0.4 kg ha-1. However, weed-free treatment resulted in per cent higher yield attributes like pods plant-1 (32.0 and 29.5%), grains pod-1 (34 and 32.6%), 1000-grain weight (25.8 and 21.5%), grain yield (48.7 and 47.5%), gross returns (46.0 and 45.0%), net returns (54.6 and 53.0%) and benefit-cost ratio (40.7 and 38.5%), being significantly higher than weedy check but remained at par with 2-HWs, imazethapyr @ 0.15 kg ha-1 fb paraquat @ 0.4 kg ha-1. The highest nutrient depletion by weeds was recorded in weedy check, whereas, the lowest was in imazethapyr @ 0.15 kg ha-1 fb paraquat 0.4 kg ha-1.
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Claims 12
Claim · model-written summary
Sequential imazethapyr and paraquat significantly reduced weed density.
- Taxon
- pigeonpea
Cajanus cajant0 - Treatment
- imazethapyr @ 0.15 kg ha-1 followed by (fb) paraquat @ 0.4 kg ha-1 40 days after sowing (DAS)e0
- Interactor
- weede0weed
- Outcome
- weed densitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“use of imazethapyr @ 0.15 kg ha-1 followed by (fb) paraquat @ 0.4 kg ha-1 40 days after sowing (DAS) significantly (P ≤ 0.05) reduced the weed density”
t0“Pigeonpea”
Claim · model-written summary
Sequential imazethapyr and paraquat significantly reduced total weed dry weight.
- Taxon
- PigeonpeaCajanus cajant0
- Treatment
- imazethapyr @ 0.15 kg ha-1 followed by (fb) paraquat @ 0.4 kg ha-1 40 days after sowing (DAS)e0
- Interactor
- weede0weed
- Outcome
- total weed dry weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“use of imazethapyr @ 0.15 kg ha-1 followed by (fb) paraquat @ 0.4 kg ha-1 40 days after sowing (DAS) significantly (P ≤ 0.05) reduced the weed density, total weed density and total weed dry weight”
t0“Pigeonpea”
Claim · model-written summary
Sequential herbicide treatment was statistically at par with two hand weedings for weed suppression.
- Taxon
- PigeonpeaCajanus cajant0
- Outcome
- statistically at pare0
- Comparator
- two hand weeding (HWs) at 25 and 50 days after sowing (DAS)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“being statistically at par with two hand weeding (HWs) at 25 and 50 days after sowing (DAS)”
t0“Pigeonpea”
Claim · model-written summary
Weed-free plots had higher pods per plant than the weedy check in both years.
- Taxon
- PigeonpeaCajanus cajant0
- Treatment
- weed-free treatmente0
- Outcome
- pods plant-1e0
- Direction
- highere0
- Value
- 32.0 and 29.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weed-free treatment resulted in per cent higher yield attributes like pods plant-1 (32.0 and 29.5%)”
t0“Pigeonpea”
Claim · model-written summary
Weed-free plots had higher grains per pod in both years.
- Taxon
- PigeonpeaCajanus cajant0
- Outcome
- grains pod-1e0
- Value
- 34 and 32.6%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grains pod-1 (34 and 32.6%)”
t0“Pigeonpea”
Claim · model-written summary
Weed-free plots had higher 1000-grain weight in both years.
- Taxon
- PigeonpeaCajanus cajant0
- Outcome
- 1000-grain weighte0
- Value
- 25.8 and 21.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1000-grain weight (25.8 and 21.5%)”
t0“Pigeonpea”
Claim · model-written summary
Weed-free plots had higher grain yield in both years.
- Taxon
- PigeonpeaCajanus cajant0
- Outcome
- grain yielde0
- Value
- 48.7 and 47.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain yield (48.7 and 47.5%)”
t0“Pigeonpea”
Claim · model-written summary
Weed-free plots had higher gross returns in both years.
- Taxon
- PigeonpeaCajanus cajant0
- Outcome
- gross returnse0
- Value
- 46.0 and 45.0%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gross returns (46.0 and 45.0%)”
t0“Pigeonpea”
Claim · model-written summary
Weed-free plots had higher net returns in both years.
- Taxon
- PigeonpeaCajanus cajant0
- Outcome
- net returnse0
- Value
- 54.6 and 53.0%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“net returns (54.6 and 53.0%)”
t0“Pigeonpea”
Claim · model-written summary
Weed-free plots had higher benefit-cost ratio in both years.
- Taxon
- PigeonpeaCajanus cajant0
- Outcome
- benefit-cost ratioe0
- Value
- 40.7 and 38.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“benefit-cost ratio (40.7 and 38.5%)”
t0“Pigeonpea”
Claim · model-written summary
Nutrient depletion by weeds was greatest in the weedy check.
- Taxon
- PigeonpeaCajanus cajant0
- Treatment
- weedy checke0
- Interactor
- weedse0weed
- Outcome
- nutrient depletion by weedse0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest nutrient depletion by weeds was recorded in weedy check”
t0“Pigeonpea”
Claim · model-written summary
Nutrient depletion by weeds was lowest after sequential herbicide application.
- Taxon
- PigeonpeaCajanus cajant0
- Treatment
- imazethapyr @ 0.15 kg ha-1 fb paraquat 0.4 kg ha-1e0
- Outcome
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest was in imazethapyr @ 0.15 kg ha-1 fb paraquat 0.4 kg ha-1”
t0“Pigeonpea”
The same questions in other papers
paraquat · weed · Cajanus cajan (pigeon pea)Results agree
2 papers in the same direction as this paper
- positive
- positive
Imazethapyr · weed · Cajanus cajan (pigeon pea)Results agree
17 papers in the same direction as this paper
- positive
- positive
- positive
14 papers more in this group
See all 18 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.