Abstract
A field experiment was conducted to assess the impact of weed management on growth and yield of grain sorghum at the Regional Agricultural Research Station, Vijayapura during rabi 2022-23. The experiment was laid out in a Randomized Complete Block Design with three replications and comprised eleven treatments. These treatments included five preemergence herbicide treatments (Atrazine @1000 g a.i. ha-1, Metribuzin @ 350 and 700 g a.i. ha-1, Metolachlor @ 750 and 1500 g a.i. ha-1) followed by two intercultivation at 30 & 60 DAS, as well as four post-emergent herbicide treatments (Metribuzin @ 350 and 700 g a.i. ha-1, Mesotrione + Atrazine (RM) @ 550 and 825 g a.i. ha-1) followed by one intercultivation at 60 DAS. These nine herbicide treatments were compared to a weedy check and a weed free check. The experimental results showed that weed free condition recorded minimal weed infestation, better crop growth, higher yield and economical returns. Among the herbicidal treatments, application of Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DAS recorded significantly lower weed count (1.67 m-2), weed biomass (4.67 g m-2) and higher weed control efficiency (92%) for total weeds at 60 DAS, with a reduced weed index of 7.21%. Additionally, this treatment led to significantly higher grain yield (1389 kg ha-1), stover yield (3031 kg ha-1), gross returns (`73,759 ha-1), net returns (`40,968 ha-1) and benefit cost ratio (2.25). In contrast, the weedy check treatment resulted in lower grain yield, net returns, and benefit cost ratio.
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Claims 11
Claim · model-written summary
Weed-free plots had minimal weeds, better crop growth, higher yield and returns.
- Taxon
- rabi sorghum (Sorghum bicolor L.)
Sorghum bicolort0 - Treatment
- weed free conditione0
- Outcome
- minimal weed infestation, better crop growth, higher yield and economical returnse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weed free condition recorded minimal weed infestation, better crop growth, higher yield and economical returns”
t0“rabi sorghum (Sorghum bicolor L.)”
Claim · model-written summary
Metolachlor plus intercultivation lowered weed count to 1.67 m-2.
- Taxon
- rabi sorghum (Sorghum bicolor L.)Sorghum bicolort0
- Treatment
- Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DASe0
- Outcome
- weed counte0
- Direction
- lowere0
- Value
- 1.67 m-2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DAS recorded significantly lower weed count (1.67 m-2)”
t0“rabi sorghum (Sorghum bicolor L.)”
Claim · model-written summary
Metolachlor plus intercultivation lowered weed biomass to 4.67 g m-2.
- Taxon
- rabi sorghum (Sorghum bicolor L.)Sorghum bicolort0
- Treatment
- Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DASe0
- Outcome
- weed biomasse0
- Direction
- lowere0
- Value
- 4.67 g m-2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DAS recorded significantly lower weed count (1.67 m-2), weed biomass (4.67 g m-2)”
t0“rabi sorghum (Sorghum bicolor L.)”
Claim · model-written summary
Metolachlor plus intercultivation raised weed control efficiency to 92%.
- Taxon
- rabi sorghum (Sorghum bicolor L.)Sorghum bicolort0
- Treatment
- Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DASe0
- Outcome
- weed control efficiencye0
- Direction
- highere0
- Value
- 92%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DAS recorded significantly lower weed count (1.67 m-2), weed biomass (4.67 g m-2) and higher weed control efficiency (92%)”
t0“rabi sorghum (Sorghum bicolor L.)”
Claim · model-written summary
Metolachlor plus intercultivation reduced the weed index to 7.21%.
- Taxon
- rabi sorghum (Sorghum bicolor L.)Sorghum bicolort0
- Treatment
- Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DASe0
- Outcome
- weed indexe0
- Direction
- reducede0
- Value
- 7.21%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DAS recorded significantly lower weed count (1.67 m-2), weed biomass (4.67 g m-2) and higher weed control efficiency (92%) for total weeds at 60 DAS, with a reduced weed index of 7.21%”
t0“rabi sorghum (Sorghum bicolor L.)”
Claim · model-written summary
The treatment raised grain yield to 1389 kg ha-1.
- Taxon
- rabi sorghum (Sorghum bicolor L.)Sorghum bicolort0
- Treatment
- Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DASe1
- Outcome
- grain yielde0
- Direction
- highere0
- Value
- 1389 kg ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this treatment led to significantly higher grain yield (1389 kg ha-1)”
t0“rabi sorghum (Sorghum bicolor L.)”
e1“application of Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DAS recorded significantly lower weed count (1.67 m-2)”
Claim · model-written summary
The treatment raised stover yield to 3031 kg ha-1.
- Taxon
- rabi sorghum (Sorghum bicolor L.)Sorghum bicolort0
- Treatment
- Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DASe1
- Outcome
- stover yielde0
- Direction
- highere0
- Value
- 3031 kg ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this treatment led to significantly higher grain yield (1389 kg ha-1), stover yield (3031 kg ha-1)”
t0“rabi sorghum (Sorghum bicolor L.)”
e1“application of Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DAS recorded significantly lower weed count (1.67 m-2)”
Claim · model-written summary
The treatment raised gross returns to `73,759 ha-1.
- Taxon
- rabi sorghum (Sorghum bicolor L.)Sorghum bicolort0
- Treatment
- Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DASe1
- Outcome
- gross returnse0
- Direction
- highere0
- Value
- `73,759 ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this treatment led to significantly higher grain yield (1389 kg ha-1), stover yield (3031 kg ha-1), gross returns (`73,759 ha-1)”
t0“rabi sorghum (Sorghum bicolor L.)”
e1“application of Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DAS recorded significantly lower weed count (1.67 m-2)”
Claim · model-written summary
The treatment raised net returns to `40,968 ha-1.
- Taxon
- rabi sorghum (Sorghum bicolor L.)Sorghum bicolort0
- Treatment
- Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DASe1
- Outcome
- net returnse0
- Direction
- highere0
- Value
- `40,968 ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this treatment led to significantly higher grain yield (1389 kg ha-1), stover yield (3031 kg ha-1), gross returns (`73,759 ha-1), net returns (`40,968 ha-1)”
t0“rabi sorghum (Sorghum bicolor L.)”
e1“application of Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DAS recorded significantly lower weed count (1.67 m-2)”
Claim · model-written summary
The treatment raised benefit cost ratio to 2.25.
- Taxon
- rabi sorghum (Sorghum bicolor L.)Sorghum bicolort0
- Treatment
- Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DASe1
- Outcome
- benefit cost ratioe0
- Direction
- highere0
- Value
- 2.25e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this treatment led to significantly higher grain yield (1389 kg ha-1), stover yield (3031 kg ha-1), gross returns (`73,759 ha-1), net returns (`40,968 ha-1) and benefit cost ratio (2.25)”
t0“rabi sorghum (Sorghum bicolor L.)”
e1“application of Metolachlor 50EC @ 1500 g a.i. ha-1as pre-emergence followed by two intercultivations at 30 and 60 DAS recorded significantly lower weed count (1.67 m-2)”
Claim · model-written summary
The weedy check had lower grain yield, net returns and benefit cost ratio.
- Taxon
- rabi sorghum (Sorghum bicolor L.)Sorghum bicolort0
- Treatment
- weedy check treatmente0
- Outcome
- grain yield, net returns, and benefit cost ratioe0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weedy check treatment resulted in lower grain yield, net returns, and benefit cost ratio”
t0“rabi sorghum (Sorghum bicolor L.)”
The same questions in other papers
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See all 25 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.