Abstract
A field experiment was conducted at CCS HAU, Regional Research Station, Kamal during Kharif 2010 to 2014 to evaluate the bio-efficacy of pretilachlor 6.0% + pyrazosulfuron-ethyl 0.15% GR (ready-mix) against complex weed flora in transplanted rice and also to study its residual effects. Results from on-station experiment (2010 and 2011) revealed that the optimum dose of pretilachlor + pyrazosulfuron-ethyl was 615 g/ha which provided effective control (91–96%) of complex weed flora in transplanted rice, with higher grain yield (5.98–6.05 t/ha) and B-C ratio (2.19–2.28). In general, it was comparable to its higher doses, bensulfuron-methyl + pretilachlor 660 g/ha, pretilachlor 1000 g/ha, butachlor 1500 g/ha, bispyribac-sodium 25 g/ha and weed free check in terms of weed control, grain yield of rice and benefit-cost ratio. In comparison to weedy check, there was 54–57% increase in grain yield of transplanted rice under pretilachlor + pyrazosulfuron-ethyl 615 g/ha. On an average of 19 adaptive/farmers-participatory trials, pretilachlor + pyrazosulfuron-ethyl 615 g/ha proved superior to commonly used herbicides butachlor 1500 g/ha in 2013 and pretilachlor 1000 g/ha in 2014 in terms of weed control and grain yield of rice. There was no phyto-toxicity of pretilachlor + pyrazosulfuron-ethyl on transplanted rice up to 1230 g/ha (2x dose) and it was also safe to the succeeding chickpea and wheat (2011–12, 2012–13 and 2012–13) crops in rotation.
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Claims 11
Claim · model-written summary
The optimum mixture dose was 615 g/ha.
- Outcome
- optimum dose of pretilachlor + pyrazosulfuron-ethyl was 615 g/hae0
Not reportedTaxon
Verbatim
e0“the optimum dose of pretilachlor + pyrazosulfuron-ethyl was 615 g/ha”
Claim · model-written summary
At 615 g/ha the mixture controlled 91–96% of complex weed flora.
- Taxon
- rice
Oryza sativae0 - Treatment
- pretilachlor + pyrazosulfuron-ethyl was 615 g/hae0
- Interactor
- weede0weed
- Outcome
- complex weed florae0
- Direction
- effective controle0
- Value
- 91–96%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pretilachlor + pyrazosulfuron-ethyl was 615 g/ha which provided effective control (91–96%) of complex weed flora in transplanted rice”
Claim · model-written summary
The mixture at 615 g/ha gave grain yield of 5.98–6.05 t/ha.
Not reportedTaxonTreatmentComparator
Verbatim
e0“with higher grain yield (5.98–6.05 t/ha)”
Claim · model-written summary
The mixture at 615 g/ha gave a benefit cost ratio of 2.19–2.28.
Not reportedTaxonTreatmentComparatorDirection
Verbatim
e0“B-C ratio (2.19–2.28)”
Claim · model-written summary
The mixture was comparable to higher doses and other listed herbicides for weed control, grain yield and benefit cost ratio.
- Taxon
- riceOryza sativae0
- Interactor
- weede0weed
- Outcome
- weed control, grain yield of rice and benefit-cost ratioe0
- Direction
- comparablee0
- Comparator
- its higher dosese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was comparable to its higher doses, bensulfuron-methyl + pretilachlor 660 g/ha, pretilachlor 1000 g/ha, butachlor 1500 g/ha, bispyribac-sodium 25 g/ha and weed free check in terms of weed control, grain yield of rice and benefit-cost ratio.”
Claim · model-written summary
Rice grain yield increased 54–57% relative to the weedy check under the mixture at 615 g/ha.
- Taxon
- riceOryza sativae0
- Treatment
- pretilachlor + pyrazosulfuron-ethyl 615 g/hae0
- Outcome
- grain yielde0
- Direction
- increasee0
- Value
- 54–57%e0
- Comparator
- weedy checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In comparison to weedy check, there was 54–57% increase in grain yield of transplanted rice under pretilachlor + pyrazosulfuron-ethyl 615 g/ha.”
Claim · model-written summary
In farmer trials the mixture outperformed butachlor in 2013 for weed control and rice yield.
- Taxon
- riceOryza sativae0
- Treatment
- pretilachlor + pyrazosulfuron-ethyl 615 g/hae0
- Interactor
- weede0weed
- Outcome
- weed control and grain yield of ricee0
- Direction
- superiore0
- Qualifier
- in 2013e0
- Comparator
- butachlor 1500 g/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pretilachlor + pyrazosulfuron-ethyl 615 g/ha proved superior to commonly used herbicides butachlor 1500 g/ha in 2013 and pretilachlor 1000 g/ha in 2014 in terms of weed control and grain yield of rice.”
Claim · model-written summary
In farmer trials the mixture outperformed pretilachlor in 2014 for weed control and rice yield.
- Taxon
- riceOryza sativae0
- Treatment
- pretilachlor + pyrazosulfuron-ethyl 615 g/hae0
- Interactor
- weede0weed
- Outcome
- weed control and grain yield of ricee0
- Direction
- superiore0
- Qualifier
- in 2014e0
- Comparator
- pretilachlor 1000 g/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pretilachlor + pyrazosulfuron-ethyl 615 g/ha proved superior to commonly used herbicides butachlor 1500 g/ha in 2013 and pretilachlor 1000 g/ha in 2014 in terms of weed control and grain yield of rice.”
Claim · model-written summary
The mixture caused no phytotoxicity in rice up to 1230 g/ha.
- Taxon
- riceOryza sativae0
- Treatment
- pretilachlor + pyrazosulfuron-ethyle0
- Outcome
- phyto-toxicitye0
- Direction
- no phyto-toxicitye0
- Qualifier
- up to 1230 g/ha (2x dose)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no phyto-toxicity of pretilachlor + pyrazosulfuron-ethyl on transplanted rice up to 1230 g/ha (2x dose)”
Claim · model-written summary
The mixture was safe for succeeding chickpea crops.
- Taxon
- chickpea
Cicer arietinume0 - Outcome
- safee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was also safe to the succeeding chickpea and wheat (2011–12, 2012–13 and 2012–13) crops in rotation.”
Claim · model-written summary
The mixture was safe for succeeding wheat crops.
- Taxon
- wheat
Triticum aestivume0 - Outcome
- safee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was also safe to the succeeding chickpea and wheat (2011–12, 2012–13 and 2012–13) crops in rotation.”
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