Abstract
A field experiment was conducted during kharif 1994 and 1995 to study the effect of herbicides in conjunction with halod (an interculture operation in standing rice crop) on direct seeded puddle rice and associated weeds. In weedy check, weeds depleted 107.0, 15.5 and 112.8 kg/ha of nitrogen, phosphorus and potassium, respectively, which was 60.8, 6.85 and 46.6 kg more than the total uptake of these nutrients by rice crop. Preemergence application of pretilachlor 0.80 kg/ha and butachlor 1.50 kg/ha at seven days after sowing (DAS) remaining statistically at par with post-halod hand weeding was significantly better than all post-halod herbicide treatments (pretilachlor 0.80 kg/ha, butachlor 1.50 kg/ha and 2, 4–0 (ethyl ester) 0.50 kg/ha alone and in combination with pretilachlor 0.40 kg/ha and butachlor 0.75 kg/ha), with regard to uptake of N, P and K by weeds and rice. Amongst post-halod herbicide treatments, tank mixed combinations of butachlor and pretilachlor with 2, 4–0 were significantly uperior in decreasing nutrients uptake by weeds and were as effective as farmers, practice of halod followed by hand weeding in increasing the uptake of all the nutrients by rice crop.
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Claims 10
Claim · model-written summary
In weedy checks, weeds depleted 107.0 kg/ha nitrogen.
- Taxon
- Rice
Oryza sativat0 - Interactor
- weedse0weed
- Outcome
- nitrogene0
- Value
- 107.0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In weedy check, weeds depleted 107.0, 15.5 and 112.8 kg/ha of nitrogen, phosphorus and potassium, respectively”
t0“Rice”
Claim · model-written summary
In weedy checks, weeds depleted 15.5 kg/ha phosphorus.
- Taxon
- RiceOryza sativat0
- Interactor
- weedse0weed
- Outcome
- phosphoruse0
- Value
- 15.5e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In weedy check, weeds depleted 107.0, 15.5 and 112.8 kg/ha of nitrogen, phosphorus and potassium, respectively”
t0“Rice”
Claim · model-written summary
In weedy checks, weeds depleted 112.8 kg/ha potassium.
- Taxon
- RiceOryza sativat0
- Interactor
- weedse0weed
- Outcome
- potassiume0
- Value
- 112.8 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In weedy check, weeds depleted 107.0, 15.5 and 112.8 kg/ha of nitrogen, phosphorus and potassium, respectively”
t0“Rice”
Claim · model-written summary
Weed nitrogen depletion exceeded rice uptake by 60.8 kg.
- Taxon
- rice cropOryza sativae0
- Outcome
- total uptake of these nutrients by rice crope0
- Direction
- moree0
- Value
- 60.8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which was 60.8, 6.85 and 46.6 kg more than the total uptake of these nutrients by rice crop.”
t0“Rice”
Claim · model-written summary
Weed phosphorus depletion exceeded rice uptake by 6.85 kg.
- Taxon
- rice cropOryza sativae0
- Outcome
- total uptake of these nutrients by rice crope0
- Direction
- moree0
- Value
- 6.85e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which was 60.8, 6.85 and 46.6 kg more than the total uptake of these nutrients by rice crop.”
t0“Rice”
Claim · model-written summary
Weed potassium depletion exceeded rice uptake by 46.6 kg.
- Taxon
- rice cropOryza sativae0
- Outcome
- total uptake of these nutrients by rice crope0
- Direction
- moree0
- Value
- 46.6 kge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which was 60.8, 6.85 and 46.6 kg more than the total uptake of these nutrients by rice crop.”
t0“Rice”
Claim · model-written summary
Preemergence pretilachlor at 0.80 kg/ha outperformed posthalod herbicides for weed and rice nutrient uptake.
- Taxon
- riceOryza sativae0
- Treatment
- pretilachlor 0.80 kg/hae0
- Interactor
- weedse0weed
- Outcome
- uptake of N, P and K by weeds and ricee0
- Direction
- bettere0
- Comparator
- post-halod herbicide treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Preemergence application of pretilachlor 0.80 kg/ha and butachlor 1.50 kg/ha at seven days after sowing (DAS) remaining statistically at par with post-halod hand weeding was significantly better than all post-halod herbicide treatments (pretilachlor 0.80 kg/ha, butachlor 1.50 kg/ha and 2, 4–0 (ethyl ester) 0.50 kg/ha alone and in combination with pretilachlor 0.40 kg/ha and butachlor 0.75 kg/ha), with regard to uptake of N, P and K by weeds and rice.”
Claim · model-written summary
Preemergence butachlor at 1.50 kg/ha outperformed posthalod herbicides for weed and rice nutrient uptake.
- Taxon
- riceOryza sativae0
- Treatment
- butachlor 1.50 kg/hae0
- Interactor
- weedse0weed
- Outcome
- uptake of N, P and K by weeds and ricee0
- Direction
- bettere0
- Comparator
- post-halod herbicide treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Preemergence application of pretilachlor 0.80 kg/ha and butachlor 1.50 kg/ha at seven days after sowing (DAS) remaining statistically at par with post-halod hand weeding was significantly better than all post-halod herbicide treatments (pretilachlor 0.80 kg/ha, butachlor 1.50 kg/ha and 2, 4–0 (ethyl ester) 0.50 kg/ha alone and in combination with pretilachlor 0.40 kg/ha and butachlor 0.75 kg/ha), with regard to uptake of N, P and K by weeds and rice.”
Claim · model-written summary
Posthalod butachlor mixed with 2,4-D reduced weed nutrient uptake relative to other herbicide treatments.
- Taxon
- riceOryza sativat0
- Treatment
- butachlor and pretilachlor with 2, 4–0e0
- Interactor
- weedse0weed
- Outcome
- nutrients uptake by weedse0
- Direction
- decreasinge0
- Comparator
- post-halod herbicide treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Amongst post-halod herbicide treatments, tank mixed combinations of butachlor and pretilachlor with 2, 4–0 were significantly uperior in decreasing nutrients uptake by weeds”
t0“rice”
Claim · model-written summary
Posthalod tank mixes matched halod plus hand weeding for increasing rice nutrient uptake.
- Taxon
- rice cropOryza sativae0
- Treatment
- halod followed by hand weedinge0
- Outcome
- uptake of all the nutrients by rice crope0
- Direction
- increasinge0
- Comparator
- halod followed by hand weedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were as effective as farmers, practice of halod followed by hand weeding in increasing the uptake of all the nutrients by rice crop.”
t0“rice”
The same questions in other papers
butachlor · weed · Oryza sativa (rice)Results differ
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- negative
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See all 150 papers →herbicide · nutrient: content · Oryza sativa (rice)Positive and negative results
42 papers in the same direction as this paper · 4 in the opposite direction
- negative
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See all 47 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.