Effect of nitrogen fertilizer and weed management practices on weed growth and crop yield of zero-till transplanted rice

Abstract

The application of N at recommended or higher dose (33% higher than recommended) effectively enhanced the growth and yield of rice crop by suppressing the weed growth in zero-till transplanted rice. Hand weeding thrice at 25, 55 and 75 days after transplanting (DAT) was the best in reducing weed growth and ultimately increased the grain yield of zero-till transplanted rice. Among the herbicidal methods, tank mix application of bispyribac-Na + 2,4-D minimized the weed growth at early stage and enhanced rice grain yield.

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Claims 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Recommended or 33% higher nitrogen enhanced rice growth.

Taxon: riceOryza sativae0
Treatment: N at recommended or higher dose (33% higher than recommended)e0
Outcome: growthe0
Direction: enhancede0
Setting: zero-till transplanted ricee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

*Oryza sativa* · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0
“The application of N at recommended or higher dose (33% higher than recommended) effectively enhanced the growth and yield of rice crop by suppressing the weed growth in zero-till transplanted rice.”
✓ located verbatim in the source · abstract, characters 0–198 · show in text ↑

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Recommended or 33% higher nitrogen enhanced rice yield.

Taxon: riceOryza sativae0
Treatment: N at recommended or higher dose (33% higher than recommended)e0
Outcome: yield of rice crope0
Direction: enhancede0
Setting: zero-till transplanted ricee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim

e0
“The application of N at recommended or higher dose (33% higher than recommended) effectively enhanced the growth and yield of rice crop by suppressing the weed growth in zero-till transplanted rice.”
✓ located verbatim in the source · abstract, characters 0–198 · show in text ↑

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Recommended or 33% higher nitrogen suppressed weed growth.

Taxon: riceOryza sativae0
Treatment: N at recommended or higher dose (33% higher than recommended)e0
Interactor: weede0weed
Outcome: weed growthe0
Direction: suppressinge0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim

e0
“The application of N at recommended or higher dose (33% higher than recommended) effectively enhanced the growth and yield of rice crop by suppressing the weed growth in zero-till transplanted rice.”
✓ located verbatim in the source · abstract, characters 0–198 · show in text ↑

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Three hand weedings at 25, 55 and 75 days after transplanting best reduced weed growth.

Taxon: riceOryza sativat0
Treatment: Hand weeding thrice at 25, 55 and 75 days after transplanting (DAT)e0
Interactor: weede0weed
Outcome: weed growthe0
Direction: reducinge0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim

e0
“Hand weeding thrice at 25, 55 and 75 days after transplanting (DAT) was the best in reducing weed growth and ultimately increased the grain yield of zero-till transplanted rice.”
✓ located verbatim in the source · abstract, characters 199–376 · show in text ↑

t0
“rice”
✓ located verbatim in the source · title, characters 116–120 · show in text ↑

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Three hand weedings increased grain yield of zero-till transplanted rice.

Taxon: riceOryza sativae0
Treatment: Hand weeding thrice at 25, 55 and 75 days after transplanting (DAT)e0
Outcome: grain yielde0
Direction: increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim

e0
“Hand weeding thrice at 25, 55 and 75 days after transplanting (DAT) was the best in reducing weed growth and ultimately increased the grain yield of zero-till transplanted rice.”
✓ located verbatim in the source · abstract, characters 199–376 · show in text ↑

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A bispyribac-Na plus 2,4-D tank mix minimized early weed growth.

Taxon: riceOryza sativat0
Organ / stage: early stagee0
Treatment: tank mix application of bispyribac-Na + 2,4-De0
Interactor: weede0weed
Outcome: weed growthe0
Direction: minimizede0
Comparator: herbicidal methodse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim

e0
“Among the herbicidal methods, tank mix application of bispyribac-Na + 2,4-D minimized the weed growth at early stage and enhanced rice grain yield.”
✓ located verbatim in the source · abstract, characters 377–524 · show in text ↑

t0
“rice”
✓ located verbatim in the source · title, characters 116–120 · show in text ↑

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A bispyribac-Na plus 2,4-D tank mix enhanced rice grain yield.

Taxon: riceOryza sativae0
Treatment: tank mix application of bispyribac-Na + 2,4-De0
Outcome: rice grain yielde0
Direction: enhancede0
Comparator: herbicidal methodse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim

e0
“Among the herbicidal methods, tank mix application of bispyribac-Na + 2,4-D minimized the weed growth at early stage and enhanced rice grain yield.”
✓ located verbatim in the source · abstract, characters 377–524 · show in text ↑

2,4-D · weed · Oryza sativa (rice)Results differ

49 papers: 47 positive, 2 negative or no effect

46 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative

no effect
2, 4-D did not reduce weed density and dry weight considerably in rice.
Effect of Weed Control Methods on Growth and Yield of Unpuddled Rice1 · 1984
Opposite direction
no effect
Anilofos+2,4-D readymix was equally good as hand weeding twice for reduction in weed population and dry weight in both years.
Efficacy of Herbicides Applied Alone and in Combinations against Weeds in Transplanted Rice · 1999 · compared with Hand weeding twice
No difference from an alternative
positive
2,4-D in water seeding effectively controlled weeds in rice
INCREASING WATER PRODUCTIVITY AND WEED SUPPRESSION OF WET SEEDED RICE: EFFECT OF WATER MANAGEMENT AND RICE GENOTYPES · 2000
Same direction

45 papers more in this group

See all 49 papers →

2,4-D · yield · Oryza sativa (rice)Positive and negative results

62 papers: 52 positive, 10 negative or no effect

51 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative

no effect
Rice yields under the mixture were statistically similar to regional weed control treatment.
Control de malezas en arroz de temporal con clomazone, solo y en mezcla con propanil y 2,4-D. · 2006 · compared with weed control regional treatment
Opposite direction
negative
The amine salt of 2,4-D applied on the day of planting reduced rice grain yield in all trials.
Rice (Oryza sativa) Response to Soil Residues of Selected Herbicides · 1997
Opposite direction
no effect
2,4-D or metsulfuron methyl could incorporate dhaincha without affecting yield.
Direct and residual effect of concurrent growing of dhaincha (Sesbania aculeata) in wet-seeded rice (Oryza sativa) on the productivity of rice–rice cropping system · 2010
Opposite direction

58 papers more in this group

See all 62 papers →

transplanting · weed · Oryza sativa (rice)Positive and negative results

146 papers: 129 positive, 17 negative or no effect

128 papers in the same direction as this paper · 16 in the opposite direction · 1 reporting no difference from an alternative

negative
Dry direct seeding had more weed infestation than continuous flooding and alternate wetting and drying.
WATER SAVING, WATER PRODUCTIVITY AND YIELD OUTPUTS OF FINE-GRAIN RICE CULTIVARS UNDER CONVENTIONAL AND WATER-SAVING RICE PRODUCTION SYSTEMS · 2015 · compared with TRCF and TRAWD
Opposite direction
negative
Weed population under dry broadcast seeding was five times that under transplanting.
Evaluation of planting methods in irrigated rice · 2004 · compared with TPR
Opposite direction
negative
Weed population at 30 days after sowing was significantly higher in direct seeded rice (24.3 per square metre) than in puddled transplanted rice (13.8).
On-farm assessment of direct-seeded rice production system under central Punjab conditions · 2014 · compared with PTR
Opposite direction

142 papers more in this group

See all 146 papers →

herbicide · weed · Oryza sativa (rice)Positive and negative results

603 papers: 579 positive, 24 negative or no effect

578 papers in the same direction as this paper · 17 in the opposite direction · 7 reporting no difference from an alternative

positive
Hand weeding at 20 and 40 DAT efficiently controlled weeds.
Performance of pre and post emergence herbicides on weed dynamics, yield and productivity of boro rice in red and lateritic soil of West Bengal · 2024
Same directionCites this paper
negative
Rice flatsedge control by herbicides was lower with residue than without.
Interaction of Rice Residue and PRE Herbicides on Emergence and Biomass of Four Weed Species · 2012 · compared with absence of residue
Opposite direction
no effect
Imazosulfuron applied alone as preemergence did not control grassy weeds, broad leaved weeds or sedges in rice
Effect of tank-mixed herbicides on weeds and transplanted rice (Oryza sativa L.) · 2012
Opposite direction

599 papers more in this group

See all 603 papers →

herbicide · yield · Oryza sativa (rice)Positive and negative results

802 papers: 725 positive, 77 negative or no effect

724 papers in the same direction as this paper · 57 in the opposite direction · 20 reporting no difference from an alternative

negative
Hand weeding had lower net return and return per rupee invested than the two herbicides.
Performance of pre and post emergence herbicides on weed dynamics, yield and productivity of boro rice in red and lateritic soil of West Bengal · 2024 · compared with pyrazosulfuron ethyl 30 at g ha-1 and pretilachlor at 500 g ha-1
Opposite directionCites this paper
no effect
Weeding every 14 days did not increase rice grain yield.
Weeds in slash‐and‐burn rice fields in northern Laos · 1997
Opposite direction
negative
The non-allelopathic variety showed a grain yield reduction of up to 45-60% even with the low-dose herbicide application.
Effect of allelopathic rice varieties combined with cultural management options on paddy field weeds · 2008
Opposite direction

798 papers more in this group

See all 802 papers →

transplanting · yield · Oryza sativa (rice)Positive and negative results

1,078 papers: 922 positive, 156 negative or no effect

921 papers in the same direction as this paper · 132 in the opposite direction · 24 reporting no difference from an alternative

no effect
Rice yields were equal under puddled transplanting and direct seeding on puddled or no-tillage flat beds.
Saving of Water and Labor in a Rice–Wheat System with No‐Tillage and Direct Seeding Technologies · 2007 · compared with conventional puddled transplanting
Opposite direction
no effect
Basal or one-week-post-transplant N did not further increase rice yield on high-fertility soil.
Chlorophyll Meter– and Leaf Color Chart–Based Nitrogen Management for Rice and Wheat in Northwestern India · 2002 · compared with zero‐N plots
Opposite direction
no effect
Applying N basally or a week after transplanting did not further increase rice yield under high inherent soil fertility
Chlorophyll Meter– and Leaf Color Chart–Based Nitrogen Management for Rice and Wheat in Northwestern India · 2002
Opposite direction

1,074 papers more in this group

See all 1,078 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.

Abstract

Claims 7

The same questions in other papers

2,4-D · weed · Oryza sativa (rice)Results differ

2,4-D · yield · Oryza sativa (rice)Positive and negative results

transplanting · weed · Oryza sativa (rice)Positive and negative results

herbicide · weed · Oryza sativa (rice)Positive and negative results

herbicide · yield · Oryza sativa (rice)Positive and negative results

transplanting · yield · Oryza sativa (rice)Positive and negative results