Abstract
A field experiment was conducted during Kharif season of 2018-19 at Agriculture Research Farm, Bihar Agriculture University, Sabour, Bhagalpur to assess the bioefficacy of different herbicides and their combinations for weed control as well as their relative influence on profitability in direct dry-seeded rice cultivation. The minimum weed index (1.69%) was recorded under herbicidal treatment T5 (Pyrazosulfuron @ 25 g a.i. ha-1 PE fb Bispyribac sodium @ 20 g a.i. ha-1 + Pyrazosulfuron @ 20 g a.i. ha-1 POE) whereas, the maximum weed index (36.39%) was recorded under T2 (Pendimethalin @ 1000 g a.i. ha-1 PE). Among different herbicidal treatments, the maximum weed control efficiency was recorded under T5 (Pyrazosulfuron @ 25 g a.i. ha-1 PE fb Bispyribac sodium @ 20 g a.i. ha-1 + Pyrazosulfuron @ 20 g a.i. ha-1 POE) treatment at 45 and 60 days after sowing, the minimum weed control efficiency (69.00%) was observed in treatment T2 (Pendimethalin @ 1000 g a.i. ha-1 PE). Maximum net return (Rs. 62401 ha-1) and benefit: cost ratio (1.95) were obtained from the treatment T5 (Pyrazosulfuron @ 25 g a.i.ha-1 PE fbBispyribac sodium @ 20 g a.i. ha-1 + Pyrazosulfuron @ 20 g a.i. ha-1 POE). T10 (Hand weeding) treatment though significantly reduced weeds dry weight and improved the grain yield and gave less benefit: cost ratio owing to higher cost of farm labour.
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Claims 9
Claim · model-written summary
The T5 herbicide combination gave the minimum weed index (1.69%).
- Taxon
- direct-seeded ricet0
- Treatment
- Pyrazosulfuron @ 25 g a.i. ha-1 PE fb Bispyribac sodium @ 20 g a.i. ha-1 + Pyrazosulfuron @ 20 g a.i. ha-1 POEe0
- Outcome
- weed indexe0
- Direction
- minimume0
- Value
- 1.69%e0
Not reportedComparator
Verbatim
t0“Herbicide combinations for weed control in direct-seeded rice”
e0“The minimum weed index (1.69%) was recorded under herbicidal treatment T5 (Pyrazosulfuron @ 25 g a.i. ha-1 PE fb Bispyribac sodium @ 20 g a.i. ha-1 + Pyrazosulfuron @ 20 g a.i. ha-1 POE)”
Claim · model-written summary
Pendimethalin alone (T2) gave the maximum weed index (36.39%).
- Taxon
- direct-seeded ricet0
- Treatment
- Pendimethalin @ 1000 g a.i. ha-1 PEe1
- Outcome
- weed indexe1
- Direction
- maximume1
- Value
- 36.39%e1
Not reportedComparator
Verbatim
t0“Herbicide combinations for weed control in direct-seeded rice”
e1“the maximum weed index (36.39%) was recorded under T2 (Pendimethalin @ 1000 g a.i. ha-1 PE)”
Claim · model-written summary
The T5 herbicide combination gave the maximum weed control efficiency at 45 and 60 days after sowing.
- Taxon
- direct-seeded ricet0
- Treatment
- Pyrazosulfuron @ 25 g a.i. ha-1 PE fb Bispyribac sodium @ 20 g a.i. ha-1 + Pyrazosulfuron @ 20 g a.i. ha-1 POEe2
- Outcome
- weed control efficiencye2
- Direction
- maximume2
- Qualifier
- at 45 and 60 days after sowinge2
Not reportedComparator
Verbatim
t0“Herbicide combinations for weed control in direct-seeded rice”
e2“the maximum weed control efficiency was recorded under T5 (Pyrazosulfuron @ 25 g a.i. ha-1 PE fb Bispyribac sodium @ 20 g a.i. ha-1 + Pyrazosulfuron @ 20 g a.i. ha-1 POE) treatment at 45 and 60 days after sowing”
Claim · model-written summary
Pendimethalin alone (T2) gave the minimum weed control efficiency (69.00%).
- Taxon
- direct-seeded ricet0
- Treatment
- Pendimethalin @ 1000 g a.i. ha-1 PEe3
- Outcome
- weed control efficiencye3
- Direction
- minimume3
- Value
- 69.00%e3
Not reportedComparator
Verbatim
t0“Herbicide combinations for weed control in direct-seeded rice”
e3“the minimum weed control efficiency (69.00%) was observed in treatment T2 (Pendimethalin @ 1000 g a.i. ha-1 PE)”
Claim · model-written summary
The T5 herbicide combination gave the maximum net return (Rs. 62401 ha-1).
- Taxon
- direct-seeded ricet0
- Treatment
- Pyrazosulfuron @ 25 g a.i.ha-1 PE fbBispyribac sodium @ 20 g a.i. ha-1 + Pyrazosulfuron @ 20 g a.i. ha-1 POEe4
- Outcome
- net returne4
- Direction
- Maximume4
- Value
- Rs. 62401 ha-1e4
Not reportedComparator
Verbatim
t0“Herbicide combinations for weed control in direct-seeded rice”
e4“Maximum net return (Rs. 62401 ha-1) and benefit: cost ratio (1.95) were obtained from the treatment T5 (Pyrazosulfuron @ 25 g a.i.ha-1 PE fbBispyribac sodium @ 20 g a.i. ha-1 + Pyrazosulfuron @ 20 g a.i. ha-1 POE)”
Claim · model-written summary
The T5 herbicide combination gave the maximum benefit: cost ratio (1.95).
- Taxon
- direct-seeded ricet0
- Treatment
- Pyrazosulfuron @ 25 g a.i.ha-1 PE fbBispyribac sodium @ 20 g a.i. ha-1 + Pyrazosulfuron @ 20 g a.i. ha-1 POEe4
- Outcome
- benefit: cost ratioe4
- Direction
- Maximume4
- Value
- 1.95e4
Not reportedComparator
Verbatim
t0“Herbicide combinations for weed control in direct-seeded rice”
e4“Maximum net return (Rs. 62401 ha-1) and benefit: cost ratio (1.95) were obtained from the treatment T5 (Pyrazosulfuron @ 25 g a.i.ha-1 PE fbBispyribac sodium @ 20 g a.i. ha-1 + Pyrazosulfuron @ 20 g a.i. ha-1 POE)”
Claim · model-written summary
Hand weeding (T10) significantly reduced weed dry weight.
- Taxon
- direct-seeded ricet0
- Treatment
- Hand weedinge5
- Outcome
- weeds dry weighte5
- Direction
- significantly reducede5
Not reportedComparator
Verbatim
t0“Herbicide combinations for weed control in direct-seeded rice”
e5“T10 (Hand weeding) treatment though significantly reduced weeds dry weight and improved the grain yield and gave less benefit: cost ratio owing to higher cost of farm labour”
Claim · model-written summary
Hand weeding (T10) improved grain yield.
Not reportedComparator
Verbatim
t0“Herbicide combinations for weed control in direct-seeded rice”
e5“T10 (Hand weeding) treatment though significantly reduced weeds dry weight and improved the grain yield and gave less benefit: cost ratio owing to higher cost of farm labour”
Claim · model-written summary
Hand weeding (T10) gave a lower benefit: cost ratio because of higher farm labour cost.
- Taxon
- direct-seeded ricet0
- Treatment
- Hand weedinge5
- Outcome
- benefit: cost ratioe5
- Direction
- lesse5
- Qualifier
- owing to higher cost of farm laboure5
Not reportedComparator
Verbatim
t0“Herbicide combinations for weed control in direct-seeded rice”
e5“T10 (Hand weeding) treatment though significantly reduced weeds dry weight and improved the grain yield and gave less benefit: cost ratio owing to higher cost of farm labour”
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