Abstract
The efficacy of different herbicides as tank mixture was evaluated to control diverse and complex weed flora in direct-seeded rice (Oryza sativa L.) during 2014-2016 at research farm of ICAR Research Complex for Eastern Region, Patna. Pendimethalin followed by tank mixture of bispyribac + ethoxysulfuron provided better control on diverse weed flora under direct seeded rice (DSR), except some of the typical grassy weeds with a yield of 4.4 tonnes/ha and was followed by tank mixture application of bispyribac + azimsulfuron (4.0 tonnes/ha) with an increment of yield by 83 and 67 % over plots receiving pendimethalin alone (2.4 tonnes/ha). Tank mixture application of bispyribac +2, 4-D and fenoxaprop + ethoxysulfuron (3.8 t/ ha) also produced 58% more grain yield over pendimethalin treated plots. It was also observed that pendimethalin followed by bispyribac in isolation could not able tocontrol Trianthemaportulacastrum effectively (69/m2) but when applied in combination with ethoxysulfuron or azimsulfuron haseffectively controlled this species (18 and 25/m2). Strong negative correlation (r = -0.96, P < 0.001) was obtainedbetween weed dry matter at 45 days after sowing and yield during the years of experimentation. With linear regression, it was observed that rice crop likely to produce less than 40% grain yield if weed dry matter is more than 200 g/m2. Pendimethalin followed by bispyribac + ethoxysulfuron mixture produced similar grain yield (4.4 tonnes/ha) as that of weed free situation (4.5 tonnes/ha). At farmers' field bispyribac + ethoxysulfuron tank mixture produced significantly higher grain yield (4.3 tonnes/ha) as compared to bispyribac alone (3.3 tonnes/ha) and weedy check (2.2 tonnes/ha) too. The tank mixture of bispyribac with ethoxysulfuron needs further evaluation at different locations as the particular mixture has got potential to control diverse and complex weed flora in direct seeded rice.
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Claims 13
Claim · model-written summary
Pendimethalin followed by bispyribac plus ethoxysulfuron improved diverse weed control, except some grassy weeds.
- Taxon
- rice
Oryza sativae0 - Treatment
- Pendimethalin followed by tank mixture of bispyribac + ethoxysulfurone0
- Interactor
- weed florae0weed
- Outcome
- control on diverse weed florae0
- Direction
- bettere0
- Qualifier
- except some of the typical grassy weedse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pendimethalin followed by tank mixture of bispyribac + ethoxysulfuron provided better control on diverse weed flora under direct seeded rice (DSR), except some of the typical grassy weeds”
Claim · model-written summary
Pendimethalin followed by bispyribac plus ethoxysulfuron yielded 4.4 tonnes/ha, 83% above pendimethalin alone.
- Taxon
- riceOryza sativae0
- Treatment
- Pendimethalin followed by tank mixture of bispyribac + ethoxysulfurone0
- Outcome
- yielde0
- Direction
- incremente0
- Value
- 4.4 tonnes/hae0
- Qualifier
- 83 and 67 %e0
- Comparator
- pendimethalin alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pendimethalin followed by tank mixture of bispyribac + ethoxysulfuron provided better control on diverse weed flora under direct seeded rice (DSR), except some of the typical grassy weeds with a yield of 4.4 tonnes/ha and was followed by tank mixture application of bispyribac + azimsulfuron (4.0 tonnes/ha) with an increment of yield by 83 and 67 % over plots receiving pendimethalin alone (2.4 tonnes/ha)”
Claim · model-written summary
Bispyribac plus azimsulfuron yielded 4.0 tonnes/ha, 67% above pendimethalin alone.
- Taxon
- riceOryza sativat0
- Treatment
- tank mixture application of bispyribac + azimsulfurone0
- Outcome
- yielde0
- Direction
- incremente0
- Value
- 4.0 tonnes/hae0
- Comparator
- pendimethalin alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tank mixture application of bispyribac + azimsulfuron (4.0 tonnes/ha) with an increment of yield by 83 and 67 % over plots receiving pendimethalin alone (2.4 tonnes/ha)”
t0“rice”
Claim · model-written summary
Bispyribac plus 2,4-D produced 3.8 t/ha and 58% more grain yield than pendimethalin plots.
- Taxon
- riceOryza sativat0
- Treatment
- bispyribac +2, 4-De0
- Outcome
- grain yielde0
- Direction
- moree0
- Value
- 58%e0
- Comparator
- pendimethalin treated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Tank mixture application of bispyribac +2, 4-D and fenoxaprop + ethoxysulfuron (3.8 t/ ha) also produced 58% more grain yield over pendimethalin treated plots.”
Claim · model-written summary
Fenoxaprop plus ethoxysulfuron produced 3.8 t/ha and 58% more grain yield than pendimethalin plots.
- Taxon
- riceOryza sativat0
- Treatment
- fenoxaprop + ethoxysulfurone0
- Outcome
- grain yielde0
- Direction
- moree0
- Value
- 3.8 t/ hae0
- Comparator
- pendimethalin treated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Tank mixture application of bispyribac +2, 4-D and fenoxaprop + ethoxysulfuron (3.8 t/ ha) also produced 58% more grain yield over pendimethalin treated plots.”
Claim · model-written summary
Pendimethalin followed by bispyribac alone left 69/m2 Trianthema portulacastrum plants and controlled it poorly.
- Taxon
- riceOryza sativat0
- Treatment
- pendimethalin followed by bispyribac in isolatione0
- Interactor
- Trianthemaportulacastrume0weed
- Outcome
- Trianthemaportulacastrume0
- Direction
- could not able tocontrole0
- Value
- 69/m2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“pendimethalin followed by bispyribac in isolation could not able tocontrol Trianthemaportulacastrum effectively (69/m2)”
Claim · model-written summary
Adding ethoxysulfuron to bispyribac controlled Trianthema portulacastrum to 18/m2.
- Taxon
- riceOryza sativat0
- Treatment
- ethoxysulfurone0
- Interactor
- Trianthemaportulacastrume1weed
- Outcome
- this speciese0
- Direction
- haseffectively controllede0
- Value
- 18 and 25/m2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“when applied in combination with ethoxysulfuron or azimsulfuron haseffectively controlled this species (18 and 25/m2)”
e1“Trianthemaportulacastrum effectively (69/m2)”
Claim · model-written summary
Adding azimsulfuron to bispyribac controlled Trianthema portulacastrum to 25/m2.
- Taxon
- riceOryza sativat0
- Treatment
- azimsulfurone0
- Interactor
- Trianthemaportulacastrume1weed
- Outcome
- this speciese0
- Direction
- haseffectively controllede0
- Value
- 25/m2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“when applied in combination with ethoxysulfuron or azimsulfuron haseffectively controlled this species (18 and 25/m2)”
e1“Trianthemaportulacastrum effectively (69/m2)”
Claim · model-written summary
Weed dry matter at 45 days after sowing was strongly negatively correlated with rice yield.
- Taxon
- riceOryza sativat0
- Interactor
- weede0weed
- Outcome
- yielde0
- Direction
- negativee0
- Qualifier
- r = -0.96, P < 0.001e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Strong negative correlation (r = -0.96, P < 0.001) was obtainedbetween weed dry matter at 45 days after sowing and yield”
Claim · model-written summary
Rice yield was predicted to fall below 40% when weed dry matter exceeded 200 g/m2.
- Taxon
- riceOryza sativat0
- Interactor
- weede0weed
- Outcome
- grain yielde0
- Direction
- less thane0
- Value
- 40%e0
- Qualifier
- weed dry matter is more than 200 g/m2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“rice crop likely to produce less than 40% grain yield if weed dry matter is more than 200 g/m2”
Claim · model-written summary
The ethoxysulfuron mixture yielded similarly to weed-free plots, at 4.4 versus 4.5 tonnes/ha.
- Taxon
- riceOryza sativat0
- Treatment
- Pendimethalin followed by bispyribac + ethoxysulfuron mixturee0
- Outcome
- grain yielde0
- Direction
- similare0
- Value
- 4.4 tonnes/hae0
- Qualifier
- 4.5 tonnes/hae0
- Comparator
- weed free situatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Pendimethalin followed by bispyribac + ethoxysulfuron mixture produced similar grain yield (4.4 tonnes/ha) as that of weed free situation (4.5 tonnes/ha)”
Claim · model-written summary
At farmers’ fields, bispyribac plus ethoxysulfuron produced significantly higher rice yield than bispyribac alone and a weedy check.
- Taxon
- riceOryza sativat0
- Treatment
- bispyribac + ethoxysulfuron tank mixturee0
- Outcome
- grain yielde0
- Direction
- highere0
- Value
- 4.3 tonnes/hae0
- Comparator
- bispyribac alonee0
- Setting
- farmers' fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“At farmers' field bispyribac + ethoxysulfuron tank mixture produced significantly higher grain yield (4.3 tonnes/ha) as compared to bispyribac alone (3.3 tonnes/ha) and weedy check (2.2 tonnes/ha) too”
Claim · model-written summary
The authors recommend further location-based evaluation of the bispyribac plus ethoxysulfuron mixture for weed control.
- Taxon
- riceOryza sativat0
- Treatment
- tank mixture of bispyribac with ethoxysulfurone0
- Interactor
- weed florae0weed
- Outcome
- needs further evaluation at different locationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“The tank mixture of bispyribac with ethoxysulfuron needs further evaluation at different locations as the particular mixture has got potential to control diverse and complex weed flora in direct seeded rice.”
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