Abstract
To determine the most appropriate method of weed management in conventional row and ultra narrow row spacings of cotton, a factorial experiment was based on a randomized complete block design with three replications was conducted in Sabzevar in 2015-2016. Factors under study were plant spacings in two levels, conventional (70 cm row spacing) and ultra-narrow row (20 cm row spacing) and weed management in six levels: without controlling of weeds (control), application of herbicide at recommended dose of Ethalfluralin (Treflan 48% EC) at 1160 g/ai ha), application of herbicide at 50% recommended dose + hand weeding at 45 days after emergence (DAE), application of herbicide at 50% recommended dose + two times hand weeding at 30 and 60 DAE, three times hand weeding at 30, 45 and 60 DAE, and full weed free condition. The results showed that traits like weed density, by 33.71 percent, lateral branches by 14.77 percent, number of bolls per plant by 16.88 percent, and boll weight by 12.30 percent were lower in narrow row spacing, while seed cotton yield by 39.85 percent and fiber yield by 23.71 percent higher, as compared to, conventional row spacing. In the conventional cultivation system, if 50% of the herbicide dose is reduced, it needs two hands weeding at 30 and 60 DAE; while in ultra-narrow row spacing condition, with a 50% reduction in the recommended herbicide dose, one hand weeding at 45 DAE is needed to achieve suitable seed cotton yield. As a whole, the results showed that, under ultra-narrow row spacing, with a 50% reduction in herbicide dose and reduced weed control times (only one hand weeding at 45 DAE) it can be obtained seed cotton yield similar to other control treatments.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-sa. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Narrow rows lowered weed density by 33.71 percent.
- Taxon
- Cotton
Gossypium hirsutumt0 - Treatment
- narrow row spacinge1
- Interactor
- Weedt1weed
- Outcome
- weed densitye0
- Direction
- lowere1
- Value
- 33.71 percente0
- Comparator
- conventional row spacinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weed density, by 33.71 percent”
e1“were lower in narrow row spacing”
e2“conventional row spacing”
t0“Cotton”
t1“Weed”
Claim · model-written summary
Narrow rows lowered lateral branches by 14.77 percent.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- narrow row spacinge1
- Outcome
- lateral branchese0
- Direction
- lowere1
- Value
- 14.77 percente0
- Comparator
- conventional row spacinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lateral branches by 14.77 percent”
e1“were lower in narrow row spacing”
e2“conventional row spacing”
t0“Cotton”
Claim · model-written summary
Narrow rows lowered bolls per plant by 16.88 percent.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- narrow row spacinge1
- Outcome
- number of bolls per plante0
- Direction
- lowere1
- Value
- 16.88 percente0
- Comparator
- conventional row spacinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“number of bolls per plant by 16.88 percent”
e1“were lower in narrow row spacing”
e2“conventional row spacing”
t0“Cotton”
Claim · model-written summary
Narrow rows lowered boll weight by 12.30 percent.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- narrow row spacinge0
- Outcome
- boll weighte0
- Direction
- lowere0
- Value
- 12.30 percente0
- Comparator
- conventional row spacinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“boll weight by 12.30 percent were lower in narrow row spacing”
e1“conventional row spacing”
t0“Cotton”
Claim · model-written summary
Narrow rows raised seed cotton yield by 39.85 percent.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- narrow row spacinge1
- Outcome
- seed cotton yielde0
- Direction
- highere0
- Value
- 39.85 percente0
- Comparator
- conventional row spacinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed cotton yield by 39.85 percent and fiber yield by 23.71 percent higher, as compared to, conventional row spacing”
e1“were lower in narrow row spacing”
t0“Cotton”
Claim · model-written summary
Narrow rows raised fiber yield by 23.71 percent.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- narrow row spacinge1
- Outcome
- fiber yielde0
- Direction
- highere0
- Value
- 23.71 percente0
- Comparator
- conventional row spacinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber yield by 23.71 percent higher, as compared to, conventional row spacing”
e1“were lower in narrow row spacing”
t0“Cotton”
Claim · model-written summary
The authors recommend two hand weedings with half the herbicide dose in conventional rows.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- 50% of the herbicide dosee0
- Outcome
- two hands weeding at 30 and 60 DAEe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the conventional cultivation system, if 50% of the herbicide dose is reduced, it needs two hands weeding at 30 and 60 DAE”
t0“Cotton”
Claim · model-written summary
The authors recommend one hand weeding at 45 DAE with half the herbicide dose in ultra-narrow rows.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- 50% reduction in the recommended herbicide dosee0
- Outcome
- one hand weeding at 45 DAEe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in ultra-narrow row spacing condition, with a 50% reduction in the recommended herbicide dose, one hand weeding at 45 DAE is needed to achieve suitable seed cotton yield”
t0“Cotton”
Claim · model-written summary
Ultra-narrow rows with half the herbicide dose and one hand weeding gave similar seed cotton yield to other control treatments.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- 50% reduction in herbicide dose and reduced weed control times (only one hand weeding at 45 DAE)e0
- Outcome
- seed cotton yielde0
- Direction
- similare0
- Comparator
- other control treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under ultra-narrow row spacing, with a 50% reduction in herbicide dose and reduced weed control times (only one hand weeding at 45 DAE) it can be obtained seed cotton yield similar to other control treatments”
t0“Cotton”
The same questions in other papers
density · weed · Gossypium hirsutum (cotton)Positive and negative results
5 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- negative
5 papers more in this group
See all 9 papers →density · quality: grain · Gossypium hirsutum (cotton)Positive and negative results
33 papers in the same direction as this paper · 34 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- no effect
65 papers more in this group
See all 69 papers →density · yield · Gossypium hirsutum (cotton)Positive and negative results
129 papers in the same direction as this paper · 38 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- no effect
- no effect
167 papers more in this group
See all 171 papers →herbicide · yield · Gossypium hirsutum (cotton)Positive and negative results
58 papers in the same direction as this paper · 123 reporting no difference from an alternative
- positive
- positive
- positive
178 papers more in this group
See all 182 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.