Abstract
A field experiment was conducted during rainy (Kharif) season of 2014 and 2015 at Zonal Agricultural Research Station, V. C. Farm, Mandya, Karnataka to study the efficacy of sequential application of herbicides on weed density, weed dry weight, yield and economics of dry direct-seeded rice. The results revealed that pre-emergence application of bensulfuron-methyl 0.6% + pretilachlor 6% GR at 10 kg/ha fb post-emergence application of bispyribac- sodium at 25 g/ha at 20 days after sowing (DAS) recorded significantly lower total weed population (39.4 and 43.1/m2) and weed dry weight (8.2 and 9.0 g/m2) with weed control efficiency of 77.8 and 77.2% during 2014 and 2015, respectively. As a consequence of effective weed control the same treatment recorded significantly higher grain yield (4.60 and 4.42 t/ha), net monetary returns (’ 39,340 and 36,710/ha) and B: C ratio (2.32 and 2.23) during 2014 and 2015, respectively. This treatment was statistically comparable to hand weeding thrice at 20, 40 and 60 DAS. Uncontrolled weed growth caused 56% reduction in grain yield of dry direct-seeded rice.
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Claims 8
Claim · model-written summary
Sequential bensulfuron-methyl plus pretilachlor followed by bispyribac-sodium significantly lowered total weed population to 39.4 and 43.1/m2 in 2014 and 2015.
- Taxon
- rice
Oryza sativat0 - Treatment
- pre-emergence application of bensulfuron-methyl 0.6% + pretilachlor 6% GR at 10 kg/ha fb post-emergence application of bispyribac- sodium at 25 g/ha at 20 days after sowing (DAS)e0
- Outcome
- total weed populatione0
- Direction
- lowere0
- Value
- 39.4 and 43.1/m2e0
- Qualifier
- during 2014 and 2015, respectivelye0
- Setting
- Zonal Agricultural Research Station, V. C. Farm, Mandya, Karnatakae1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pre-emergence application of bensulfuron-methyl 0.6% + pretilachlor 6% GR at 10 kg/ha fb post-emergence application of bispyribac- sodium at 25 g/ha at 20 days after sowing (DAS) recorded significantly lower total weed population (39.4 and 43.1/m2) and weed dry weight (8.2 and 9.0 g/m2) with weed control efficiency of 77.8 and 77.2% during 2014 and 2015, respectively.”
t0“rice”
e1“Zonal Agricultural Research Station, V. C. Farm, Mandya, Karnataka”
Claim · model-written summary
The sequential herbicide treatment significantly lowered weed dry weight to 8.2 and 9.0 g/m2.
- Taxon
- riceOryza sativat0
- Treatment
- pre-emergence application of bensulfuron-methyl 0.6% + pretilachlor 6% GR at 10 kg/ha fb post-emergence application of bispyribac- sodium at 25 g/ha at 20 days after sowing (DAS)e0
- Outcome
- weed dry weighte0
- Direction
- lowere0
- Value
- 8.2 and 9.0 g/m2e0
- Qualifier
- during 2014 and 2015, respectivelye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pre-emergence application of bensulfuron-methyl 0.6% + pretilachlor 6% GR at 10 kg/ha fb post-emergence application of bispyribac- sodium at 25 g/ha at 20 days after sowing (DAS) recorded significantly lower total weed population (39.4 and 43.1/m2) and weed dry weight (8.2 and 9.0 g/m2) with weed control efficiency of 77.8 and 77.2% during 2014 and 2015, respectively.”
t0“rice”
Claim · model-written summary
The sequential herbicide treatment achieved weed control efficiency of 77.8 and 77.2%.
- Taxon
- riceOryza sativat0
- Treatment
- pre-emergence application of bensulfuron-methyl 0.6% + pretilachlor 6% GR at 10 kg/ha fb post-emergence application of bispyribac- sodium at 25 g/ha at 20 days after sowing (DAS)e0
- Outcome
- weed control efficiencye0
- Value
- 77.8 and 77.2%e0
- Qualifier
- during 2014 and 2015, respectivelye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pre-emergence application of bensulfuron-methyl 0.6% + pretilachlor 6% GR at 10 kg/ha fb post-emergence application of bispyribac- sodium at 25 g/ha at 20 days after sowing (DAS) recorded significantly lower total weed population (39.4 and 43.1/m2) and weed dry weight (8.2 and 9.0 g/m2) with weed control efficiency of 77.8 and 77.2% during 2014 and 2015, respectively.”
t0“rice”
Claim · model-written summary
The same treatment significantly increased grain yield to 4.60 and 4.42 t/ha.
- Taxon
- riceOryza sativat0
- Treatment
- same treatmente0
- Outcome
- grain yielde0
- Direction
- highere0
- Value
- 4.60 and 4.42 t/hae0
- Qualifier
- during 2014 and 2015, respectivelye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As a consequence of effective weed control the same treatment recorded significantly higher grain yield (4.60 and 4.42 t/ha), net monetary returns (’ 39,340 and 36,710/ha) and B: C ratio (2.32 and 2.23) during 2014 and 2015, respectively.”
t0“rice”
Claim · model-written summary
The same treatment significantly increased net monetary returns to ’ 39,340 and 36,710/ha.
- Treatment
- same treatmente0
- Outcome
- net monetary returnse0
- Direction
- highere0
- Value
- ’ 39,340 and 36,710/hae0
Not reportedTaxonComparator
Verbatim
e0“As a consequence of effective weed control the same treatment recorded significantly higher grain yield (4.60 and 4.42 t/ha), net monetary returns (’ 39,340 and 36,710/ha) and B: C ratio (2.32 and 2.23) during 2014 and 2015, respectively.”
Claim · model-written summary
The same treatment significantly increased B:C ratio to 2.32 and 2.23.
Not reportedTaxonComparator
Verbatim
e0“As a consequence of effective weed control the same treatment recorded significantly higher grain yield (4.60 and 4.42 t/ha), net monetary returns (’ 39,340 and 36,710/ha) and B: C ratio (2.32 and 2.23) during 2014 and 2015, respectively.”
Claim · model-written summary
The herbicide treatment was statistically comparable to hand weeding three times.
- Taxon
- riceOryza sativat0
- Treatment
- This treatmente0
- Outcome
- statistically comparablee0
- Direction
- comparablee0
- Comparator
- hand weeding thrice at 20, 40 and 60 DASe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment was statistically comparable to hand weeding thrice at 20, 40 and 60 DAS.”
t0“rice”
Claim · model-written summary
Uncontrolled weeds reduced dry direct-seeded rice grain yield by 56%.
- Taxon
- riceOryza sativae0
- Treatment
- Uncontrolled weed growthe0
- Outcome
- grain yielde0
- Direction
- reductione0
- Value
- 56%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uncontrolled weed growth caused 56% reduction in grain yield of dry direct-seeded rice.”
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Pretilachlor · weed · Oryza sativa (rice)Results differ
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- negative
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578 papers in the same direction as this paper · 17 in the opposite direction · 7 reporting no difference from an alternative
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See all 603 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.