Abstract
To tackle the serious problems of weeds in dry direct-seeded rice (DSR), a field experiment was conducted on loamy sand soil at Ludhiana, Punjab during 2006 and 2007 with an objective to identify effective herbicides for the control of complex weed flora of DSR. It is difficult to raise weed free DSR with the application of only one herbicide. Integration of pre-emergence application of pendimethalin 0.75 kg/hafollowed by post-emergence (30 DAS) application of bispyribac 25 g/ha or azimsulfuron 20 g/ha or 2,4-D 500 g/ha resulted in effective weed control and higher rice grain yields. Pendimethalin pre-emergence application provided effective control of non-predominant paddy weeds, whereas bispyribac controlled all typical predominant paddy weeds including Echinochloa colona and all Cyperus species. Azimsulfuron or 2, 4-D was effective against all Cyperus spp. and broad-leaved weeds. Integration of pre-emergence application of pendimethalin 0.75 kg/ha with post-emergence application of bispyribac 25 g/ha resulted in 372% increase in rice grain yield as compared to unweeded control.
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Claims 6
Claim · model-written summary
A pendimethalin programme followed by post-emergence herbicides gave effective weed control and higher rice yield.
- Taxon
- rice
Oryza sativae0 - Treatment
- pendimethalin 0.75 kg/hafollowed by post-emergence (30 DAS) application of bispyribac 25 g/ha or azimsulfuron 20 g/ha or 2,4-D 500 g/hae0
- Interactor
- weede0weed
- Outcome
- weed control and higher rice grain yieldse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Integration of pre-emergence application of pendimethalin 0.75 kg/hafollowed by post-emergence (30 DAS) application of bispyribac 25 g/ha or azimsulfuron 20 g/ha or 2,4-D 500 g/ha resulted in effective weed control and higher rice grain yields.”
Claim · model-written summary
Pre-emergence pendimethalin controlled non-predominant paddy weeds.
- Treatment
- Pendimethalin pre-emergence applicatione0
- Interactor
- non-predominant paddy weedse0weed
- Outcome
- control of non-predominant paddy weedse0
- Direction
- effectivee0
Not reportedTaxonComparator
Verbatim
e0“Pendimethalin pre-emergence application provided effective control of non-predominant paddy weeds”
Claim · model-written summary
Bispyribac controlled typical paddy weeds including Echinochloa colona and Cyperus.
- Treatment
- bispyribace0
- Interactor
- Echinochloa colona
Echinochloa colonae0weed - Outcome
- all typical predominant paddy weedse0
- Direction
- controllede0
CyperusNot reportedTaxonComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bispyribac controlled all typical predominant paddy weeds including Echinochloa colona and all Cyperus species”
Claim · model-written summary
Azimsulfuron controlled Cyperus and broad-leaved weeds.
Not reportedTaxonComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azimsulfuron or 2, 4-D was effective against all Cyperus spp. and broad-leaved weeds”
Claim · model-written summary
2,4-D controlled Cyperus and broad-leaved weeds.
Not reportedTaxonComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azimsulfuron or 2, 4-D was effective against all Cyperus spp. and broad-leaved weeds”
Claim · model-written summary
Pendimethalin followed by bispyribac increased rice grain yield 372% over the unweeded control.
- Taxon
- riceOryza sativae0
- Treatment
- pendimethalin 0.75 kg/ha with post-emergence application of bispyribac 25 g/hae0
- Outcome
- rice grain yielde0
- Direction
- increasee0
- Value
- 372%e0
- Comparator
- unweeded controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Integration of pre-emergence application of pendimethalin 0.75 kg/ha with post-emergence application of bispyribac 25 g/ha resulted in 372% increase in rice grain yield as compared to unweeded control.”
The same questions in other papers
2,4-D · weed · Oryza sativa (rice)Results differ
46 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- positive
45 papers more in this group
See all 49 papers →bispyribac · yield · Oryza sativa (rice)Positive and negative results
30 papers in the same direction as this paper · 3 reporting no difference from an alternative
- no effect
- no effect
- no effect
30 papers more in this group
See all 34 papers →pendimethalin · weed · Oryza sativa (rice)Positive and negative results
124 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- positive
124 papers more in this group
See all 128 papers →pendimethalin · yield · Oryza sativa (rice)Positive and negative results
125 papers in the same direction as this paper · 5 in the opposite direction · 4 reporting no difference from an alternative
- no effect
- positive
- positive
131 papers more in this group
See all 135 papers →2,4-D · Cyperus · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- positive
bispyribac · Echinochloa colona · Oryza sativa (rice)Results agree
2 papers in the same direction as this paper
- positive
- positive
bispyribac · weed · Oryza sativa (rice)Results agree
31 papers in the same direction as this paper
- positive
- positive
- positive
28 papers more in this group
See all 32 papers →azimsulfuron · weed · Oryza sativa (rice)Results agree
32 papers in the same direction as this paper
- positive
- positive
- positive
29 papers more in this group
See all 33 papers →8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.