Abstract
Heavy infestation of weeds in pearl millet seed crop curtails its seed yield and profitability. Chemical weed control in pearl millet at early growth stage with appropriate exclusive or pre-mixed herbicide and application timing is crucial for reducing yield losses and improve profitability. This two-year study including eight treatments was executed to ascertain different herbicides applied as pre-emergence (pendimethalin, atrazine, s-metolachlor and pre-mixed atrazine + s-metolachlor) and post-emergence (atrazine and pre-mixed atrazine + s-metolachlor) for effective weed control to improve growth, seed yield and profitability of pearl millet. Weed free and weedy check were used as controls. Atrazine (post-emergence) caused maximum decrease in weed density (98%) and weed dry biomass (93%) while increased weed control efficiency (WCE; 97%) and weed control index (WCI; 93%) which was comparable to weed free control. Likewise, this treatment resulted in the greatest increase in plant height (8%), leaf area (65%), stem thickness (10%), tillers plant-1 (6.22; 165%), seed weight (13.0 g; 41%), seed yield (1.73 t ha-1; 140%) and benefit:cost ratio (BCR; 2.55) and these results were followed by pre-mixed atrazine + s-metolachlor (post-emergence). A significant negative relationship of weed density with seed yield and WCE with yield loss indicates that reducing weed density through effective weed control practices can minimize yield loss. In conclusion, atrazine (post-emergence) increased seed yield and profitability of pearl millet by effective weed control and decreased yield loss; hence, it could be employed for enhancing seed production. However, pre-mixed atrazine + s-metolachlor (post-emergence) could be utilized as an alternative.
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Claims 5
Claim · model-written summary
Post-emergence atrazine caused the maximum decrease in weed density (98%) in pearl millet.
- Taxon
- pearl millet
Cenchrus americanust0 - Treatment
- Atrazine (post-emergence)e1
- Outcome
- weed densitye1
- Direction
- maximum decreasee1
- Value
- 98%e1
- Comparator
- weedy checke2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Atrazine (post-emergence) caused maximum decrease in weed density (98%) and weed dry biomass (93%)”
e2“Weed free and weedy check were used as controls”
t0“Pearl Millet Seed Crop”
Claim · model-written summary
Post-emergence atrazine decreased weed dry biomass by 93% in pearl millet.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- Atrazine (post-emergence)e1
- Outcome
- weed dry biomasse1
- Direction
- maximum decreasee1
- Value
- 93%e1
- Comparator
- weedy checke2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Atrazine (post-emergence) caused maximum decrease in weed density (98%) and weed dry biomass (93%)”
e2“Weed free and weedy check were used as controls”
t0“Pearl Millet Seed Crop”
Claim · model-written summary
Post-emergence atrazine increased weed control efficiency (97%) in pearl millet.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- Atrazine (post-emergence)e1
- Outcome
- weed control efficiencye3
- Direction
- increasede3
- Value
- 97%e3
- Comparator
- weed free controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“while increased weed control efficiency (WCE; 97%) and weed control index (WCI; 93%) which was comparable to weed free control”
t0“Pearl Millet Seed Crop”
e1“Atrazine (post-emergence) caused maximum decrease in weed density (98%) and weed dry biomass (93%)”
Claim · model-written summary
Post-emergence atrazine increased pearl millet seed yield by 140%, to 1.73 t/ha.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- Atrazine (post-emergence)e1
- Outcome
- seed yielde4
- Direction
- greatest increasee4
- Value
- 1.73 t ha-1; 140%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“greatest increase in plant height (8%), leaf area (65%), stem thickness (10%), tillers plant-1 (6.22; 165%), seed weight (13.0 g; 41%), seed yield (1.73 t ha-1; 140%)”
t0“Pearl Millet Seed Crop”
e1“Atrazine (post-emergence) caused maximum decrease in weed density (98%) and weed dry biomass (93%)”
Claim · model-written summary
Post-emergence atrazine gave a benefit:cost ratio of 2.55 in pearl millet.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- Atrazine (post-emergence)e1
- Outcome
- benefit:cost ratioe5
- Direction
- greatest increasee4
- Value
- 2.55e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“seed yield (1.73 t ha-1; 140%) and benefit:cost ratio (BCR; 2.55)”
e4“greatest increase in plant height (8%), leaf area (65%), stem thickness (10%), tillers plant-1 (6.22; 165%), seed weight (13.0 g; 41%), seed yield (1.73 t ha-1; 140%)”
t0“Pearl Millet Seed Crop”
e1“Atrazine (post-emergence) caused maximum decrease in weed density (98%) and weed dry biomass (93%)”
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See all 39 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.