Abstract
Crop allelopathy can be manipulated for achieving sustainable weed management. Less inhibition of weeds is generally achieved through allelopathic interactions than the standard weed control limits. Combination of allelopathic crop water extracts with lower rate of herbicides may provide lower desired weed control levels there by reducing herbicide usage. Two field studies were conducted utilizing water extracts of allelopathic crops sorghum (Sorghum bicolor L.), sunflower (Helianthus annuus L.) and brassica (Brassica napus L.) with reduced glyphosate dosage for controlling purple nutsedge in cotton. In first experiment sorghum and brassica water extracts were tank mixed (at 15 & 18 L ha -1 ) in different combinations with reduced rate of glyphosate by 767 and 575 g a.e. ha -1 and sprayed as directed post emergence at 21 days after sowing (DAS). In second experiment sorghum and sunflower water extracts were mixed with glyphosate at same dose as in experiment 1. Purple nutsedge density and dry weight were suppressed by 78% to 95% and 83% to 95% respectively, when different crop water extracts were used in combination with reduced rate of glyphosate. Seed cotton yield was improved from 15-21% in sorgaab and brassica water extract combinations with reduced rates of glyphosate (67-75%). However, the yield improvement in the combination of sorgaab and sunflower water extracts was comparatively less (13-19%) with similar reduction in herbicides dose.
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Claims 4
Claim · model-written summary
Extract and reduced glyphosate combinations suppressed purple nutsedge density by 78% to 95%.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- different crop water extracts were used in combination with reduced rate of glyphosatee0
- Interactor
- Purple nutsedgee0weed
- Outcome
- Purple nutsedge densitye0
- Direction
- suppressede0
- Value
- 78% to 95%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Purple nutsedge density and dry weight were suppressed by 78% to 95% and 83% to 95% respectively, when different crop water extracts were used in combination with reduced rate of glyphosate.”
t0“Cotton”
Claim · model-written summary
Extract and reduced glyphosate combinations suppressed purple nutsedge dry weight by 83% to 95%.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- different crop water extracts were used in combination with reduced rate of glyphosatee0
- Interactor
- Purple nutsedgee0weed
- Outcome
- Purple nutsedge density and dry weighte0
- Direction
- suppressede0
- Value
- 83% to 95%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Purple nutsedge density and dry weight were suppressed by 78% to 95% and 83% to 95% respectively, when different crop water extracts were used in combination with reduced rate of glyphosate.”
t0“Cotton”
Claim · model-written summary
Sorgaab and brassica extracts with reduced glyphosate improved seed cotton yield by 15-21%.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- sorgaab and brassica water extract combinations with reduced rates of glyphosatee0
- Outcome
- Seed cotton yielde0
- Direction
- improvede0
- Value
- 15-21%e0
- Qualifier
- 67-75%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed cotton yield was improved from 15-21% in sorgaab and brassica water extract combinations with reduced rates of glyphosate (67-75%).”
Claim · model-written summary
Sorgaab and sunflower extracts with reduced glyphosate improved seed cotton yield by 13-19%.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- combination of sorgaab and sunflower water extractse0
- Outcome
- yield improvemente0
- Direction
- comparatively lesse0
- Value
- 13-19%e0
- Qualifier
- similar reduction in herbicides dosee0
- Comparator
- sorgaab and brassica water extract combinationst1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield improvement in the combination of sorgaab and sunflower water extracts was comparatively less (13-19%) with similar reduction in herbicides dose.”
t0“Cotton”
t1“sorgaab and brassica water extract combinations”
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