Abstract
A field experiment was conducted at Agricultural College and Research Institute, Madurai during winter (rabi) seasons of 1998–99 and 1999–2000, to study the effect of integrated weed-management practices on weed control and yield of wet-seeded rice. Glyphosate (1.5 kg a.i./ha) was applied at pre-sowing stage alone or in combination with pre-emergence application of pretilachlor +Safener (0.4 kg a.i./ha) and early post-emergence application of butanil (3 litres/ha) along with manual weeding. It was compared with weed-free check and unweeded control. All the weed-management practices significantly reduced the weed density of grasses, sedges and broad-leaf weeds, resulting in their reduced dry weight. Pre-sowing application of glyphosate (1.5 kg a.i./ha) effectively reduced the sedges, when combined with pre-emergence application of pretilachlor + Safner (0.4 a.i./ha) followed by two hand-weedings at 25 and 45 days after sowing. These recorded lesser weed density, dry weight and higher weed-control efficiency, resulting in higher grain yield (58.73 q/ha). Bioassay showed no residual effect of the herbicides applied to rice (Oryza sativa L.) on the stand of succeeding crop of blackgram [Phaseolus mungo (L.) Wilczek].
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Claims 7
Claim · model-written summary
Weed management significantly reduced grass, sedge and broadleaf weed density.
- Taxon
- rice
Oryza sativae0t0 - Treatment
- weed-management practicese0
- Interactor
- grasses, sedges and broad-leaf weedse0weed
- Outcome
- weed density of grasses, sedges and broad-leaf weedse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the weed-management practices significantly reduced the weed density of grasses, sedges and broad-leaf weeds, resulting in their reduced dry weight.”
t0“rice”
Claim · model-written summary
Weed management reduced weed dry weight.
- Taxon
- riceOryza sativae0t0
- Treatment
- weed-management practicese0
- Interactor
- grasses, sedges and broad-leaf weedse0weed
- Outcome
- their reduced dry weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the weed-management practices significantly reduced the weed density of grasses, sedges and broad-leaf weeds, resulting in their reduced dry weight.”
t0“rice”
Claim · model-written summary
Pre-sowing glyphosate with pretilachlor and two hand weedings reduced sedges.
- Taxon
- riceOryza sativae0t0
- Treatment
- Pre-sowing application of glyphosate (1.5 kg a.i./ha)e0
- Outcome
- sedgese0
- Direction
- reducede0
CarexNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pre-sowing application of glyphosate (1.5 kg a.i./ha) effectively reduced the sedges, when combined with pre-emergence application of pretilachlor + Safner (0.4 a.i./ha) followed by two hand-weedings at 25 and 45 days after sowing.”
t0“rice”
Claim · model-written summary
The combined weed treatment gave lower weed density and dry weight.
- Taxon
- riceOryza sativae0t0
- Treatment
- Thesee0
- Interactor
- weede0weed
- Outcome
- weed density, dry weighte0
- Direction
- lessere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These recorded lesser weed density, dry weight and higher weed-control efficiency, resulting in higher grain yield (58.73 q/ha).”
t0“rice”
Claim · model-written summary
The combined treatment improved weed control efficiency.
- Taxon
- riceOryza sativae0t0
- Treatment
- Thesee0
- Interactor
- weede0weed
- Outcome
- weed-control efficiencye0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These recorded lesser weed density, dry weight and higher weed-control efficiency, resulting in higher grain yield (58.73 q/ha).”
t0“rice”
Claim · model-written summary
The combined treatment produced a higher rice grain yield of 58.73 q/ha.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These recorded lesser weed density, dry weight and higher weed-control efficiency, resulting in higher grain yield (58.73 q/ha).”
t0“rice”
Claim · model-written summary
Rice herbicide treatments had no residual effect on succeeding blackgram stand.
- Taxon
- blackgram
Vigna mungoe0 - Treatment
- herbicides applied to ricee0
- Outcome
- stand of succeeding crope0
- Direction
- no residual effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bioassay showed no residual effect of the herbicides applied to rice (Oryza sativa L.) on the stand of succeeding crop of blackgram [Phaseolus mungo (L.) Wilczek].”
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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.