Abstract
A field experiment was carried out for two consecutive years at the Research farm of Regional Agricultural Research Station, Nandyal during Kharif 2016–17 and 2017–18 with an objective to find out the effective and economic method of weed control in Bt cotton. Among different herbicide applications, pendimethalin 1.0 kg/ha as pre-emergence fb glyphosate 1.0 kg/ha as directed spray at 2–4 leaf stage weed + one hoeing at 50 DAS were significantly superior in reducing weed density and dry weight of weeds. The crop growth parameters (plant height, no of sympodia per plant), yield attributes (no. of bolls/m2 andboll weight) and seed cotton yield were recorded highest in weed free check (4.18 t/ha in 2016 and 3.23 t/ha in 2017) and was comparable with pendimethalin 1.0 kg/ha as pre-emergence fb glyphosate 1.0 kg/ha as directed spray at 2–4 leaf stage weed + one hoeing at 50 DAS. However, the lowest seed cotton yield was recorded under weedy check plot (1.62 t/ha in 2016 and 1.64 t/ha in 2017). Among weed control treatments, highest B:C ratio was recorded with application of pendimethalin 1.0 kg/ha as pre-emergence fb glyphosate 1.0 kg/ha as directed spray at 2–4 leaf stage weed+ one hoeing at 50 DAS closely fb weed free check.
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Claims 7
Claim · model-written summary
The pendimethalin, glyphosate and hoeing sequence significantly reduced weed density and dry weight.
- Taxon
- Bt cottont0
- Treatment
- pendimethalin 1.0 kg/ha as pre-emergence fb glyphosate 1.0 kg/ha as directed spray at 2–4 leaf stage weed + one hoeing at 50 DASe0
- Interactor
- weedse0weed
- Outcome
- weed density and dry weighte0
- Direction
- reducinge0
Not reportedComparator
Verbatim
e0“pendimethalin 1.0 kg/ha as pre-emergence fb glyphosate 1.0 kg/ha as directed spray at 2–4 leaf stage weed + one hoeing at 50 DAS were significantly superior in reducing weed density and dry weight of weeds.”
t0“Bt cotton”
Claim · model-written summary
Weed-free cotton had the highest growth and yield attributes and seed yield, comparable to the herbicide and hoeing sequence.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- weed free checke0
- Outcome
- crop growth parameterse0
- Direction
- higheste0
- Comparator
- pendimethalin 1.0 kg/ha as pre-emergence fb glyphosate 1.0 kg/ha as directed spray at 2–4 leaf stage weed + one hoeing at 50 DASe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The crop growth parameters (plant height, no of sympodia per plant), yield attributes (no. of bolls/m2 andboll weight) and seed cotton yield were recorded highest in weed free check (4.18 t/ha in 2016 and 3.23 t/ha in 2017) and was comparable with pendimethalin 1.0 kg/ha as pre-emergence fb glyphosate 1.0 kg/ha as directed spray at 2–4 leaf stage weed + one hoeing at 50 DAS.”
t0“cotton”
Claim · model-written summary
Weed-free cotton yielded 4.18 t/ha in 2016.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- weed free checke0
- Outcome
- seed cotton yielde0
- Direction
- higheste0
- Value
- 4.18 t/hae0
- Qualifier
- 2016e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed cotton yield were recorded highest in weed free check (4.18 t/ha in 2016 and 3.23 t/ha in 2017)”
t0“cotton”
Claim · model-written summary
Weed-free cotton yielded 3.23 t/ha in 2017.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- weed free checke0
- Outcome
- seed cotton yielde0
- Direction
- higheste0
- Value
- 3.23 t/hae0
- Qualifier
- 2017e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed cotton yield were recorded highest in weed free check (4.18 t/ha in 2016 and 3.23 t/ha in 2017)”
t0“cotton”
Claim · model-written summary
The weedy check had the lowest cotton yield of 1.62 t/ha in 2016.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- weedy check plote0
- Outcome
- seed cotton yielde0
- Direction
- loweste0
- Value
- 1.62 t/hae0
- Qualifier
- 2016e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest seed cotton yield was recorded under weedy check plot (1.62 t/ha in 2016 and 1.64 t/ha in 2017).”
t0“cotton”
Claim · model-written summary
The weedy check had the lowest cotton yield of 1.64 t/ha in 2017.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- weedy check plote0
- Outcome
- seed cotton yielde0
- Direction
- loweste0
- Value
- 1.64 t/hae0
- Qualifier
- 2017e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest seed cotton yield was recorded under weedy check plot (1.62 t/ha in 2016 and 1.64 t/ha in 2017).”
t0“cotton”
Claim · model-written summary
The herbicide and hoeing sequence gave the highest benefit-cost ratio among weed treatments.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- pendimethalin 1.0 kg/ha as pre-emergence fb glyphosate 1.0 kg/ha as directed spray at 2–4 leaf stage weed+ one hoeing at 50 DASe0
- Outcome
- B:C ratioe0
- Direction
- higheste0
- Comparator
- weed free checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among weed control treatments, highest B:C ratio was recorded with application of pendimethalin 1.0 kg/ha as pre-emergence fb glyphosate 1.0 kg/ha as directed spray at 2–4 leaf stage weed+ one hoeing at 50 DAS closely fb weed free check.”
t0“cotton”
The same questions in other papers
pendimethalin · yield · Gossypium hirsutum (cotton)Results differ
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- negative
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252 papers in the same direction as this paper · 27 in the opposite direction · 3 reporting no difference from an alternative
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See all 283 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.