Sequential application of herbicides for weed management in rainfed lowland rice

Abstract

A field experiment was conducted during rainy season of (Kharif) 2018 at Tirupati, Andhra Pradesh to find out the effect of sequential application of pre- and post-emergence herbicides on weed growth and yield of rainfed lowland rice. The present study has revealed that pre-emergence application of pendimethalin 1000 g/ha fb florpyrauxifen-benzyl 25 g/ha or halosulfuron- methyl 65.7 g/ha applied at 20 DAS resulted in the highest grain yield and economic returns as well as broad-spectrum weed control in rainfed lowland rice.

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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 2

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pre-emergence pendimethalin followed by florpyrauxifen-benzyl or halosulfuron-methyl applied at 20 DAS gave the highest grain yield and economic returns in rainfed lowland rice.

Taxon: rainfed lowland ricet0
Treatment: pre-emergence application of pendimethalin 1000 g/ha fb florpyrauxifen-benzyl 25 g/ha or halosulfuron- methyl 65.7 g/ha applied at 20 DASe1
Outcome: grain yield and economic returnse1
Direction: higheste1
Setting: Tirupati, Andhra Pradeshe2

Not reportedComparator

Verbatim

t0
“rainfed lowland rice”
✓ located verbatim in the source · title, characters 60–80 · show in text ↑

e1
“pre-emergence application of pendimethalin 1000 g/ha fb florpyrauxifen-benzyl 25 g/ha or halosulfuron- methyl 65.7 g/ha applied at 20 DAS resulted in the highest grain yield and economic returns”
✓ located verbatim in the source · abstract, characters 271–465 · show in text ↑

e2
“A field experiment was conducted during rainy season of (Kharif) 2018 at Tirupati, Andhra Pradesh”
✓ located verbatim in the source · abstract, characters 0–97 · show in text ↑

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pre-emergence herbicide application gave broad-spectrum weed control in rainfed lowland rice.

Taxon: rainfed lowland ricet0
Treatment: pre-emergence application of pendimethalin 1000 g/ha fb florpyrauxifen-benzyl 25 g/ha or halosulfuron- methyl 65.7 g/ha applied at 20 DASe1
Outcome: broad-spectrum weed controle3
Setting: Tirupati, Andhra Pradeshe2

Not reportedComparatorDirection

Verbatim

t0
“rainfed lowland rice”
✓ located verbatim in the source · title, characters 60–80 · show in text ↑

e1
“pre-emergence application of pendimethalin 1000 g/ha fb florpyrauxifen-benzyl 25 g/ha or halosulfuron- methyl 65.7 g/ha applied at 20 DAS resulted in the highest grain yield and economic returns”
✓ located verbatim in the source · abstract, characters 271–465 · show in text ↑

e2
“A field experiment was conducted during rainy season of (Kharif) 2018 at Tirupati, Andhra Pradesh”
✓ located verbatim in the source · abstract, characters 0–97 · show in text ↑

e3
“broad-spectrum weed control”
✓ located verbatim in the source · abstract, characters 477–504 · show in text ↑

florpyrauxifen-benzyl · weed · Oryza sativa (rice)Positive and negative results

13 papers: 12 positive, 1 negative or no effect

11 papers in the same direction as this paper · 1 in the opposite direction

negative
Coated florpyrauxifen-benzyl with clomazone gave lower weed control than spraying herbicide alone.
Flood timing and flood loss impact on effectiveness of florpyrauxifen-benzyl coated on urea in rice · 2024 · compared with spraying the herbicide alone
Opposite direction
positive
Florpyrauxifen-benzyl controlled all evaluated weed species by at least 75%.
Florpyrauxifen-benzyl Weed Control Spectrum and Tank-Mix Compatibility with other Commonly Applied Herbicides in Rice · 2018
Same direction
positive
The 180 g ha-1 combination lowered grass and broadleaf weed density and biomass relative to a weedy check.
Weed Control by Single Post-emergence Combination Herbicide Florpyrauxifen-Benzyl Plus Cyhalofop Butyl in Aerobic Rice · 2020 · compared with weedy check
Same direction

9 papers more in this group

See all 13 papers →

florpyrauxifen-benzyl · yield · Oryza sativa (rice)Positive and negative results

19 papers: 14 positive, 5 negative or no effect

13 papers in the same direction as this paper · 5 in the opposite direction

no effect
Florpyrauxifen-benzyl did not affect CL111 yield.
Characterization of rice cultivar response to florpyrauxifen-benzyl · 2020
Opposite direction
no effect
Florpyrauxifen-benzyl at 30 and 60 g ai ha-1 did not reduce rice yield.
Florpyrauxifen-Benzyl Selectivity to Rice · 2021
Opposite direction
negative
A sequential florpyrauxifen-benzyl program at 0.03 lb a.e. acre-1 to XP753 caused a 17% rough rice yield loss.
Rice tolerance to multiple applications of florpyrauxifen‐benzyl alone and followed by benzobicyclon · 2022
Opposite direction

15 papers more in this group

See all 19 papers →

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

21 papers: 15 positive, 6 negative or no effect

14 papers in the same direction as this paper · 4 in the opposite direction · 2 reporting no difference from an alternative

negative
The better weed control by pre-emergence metsulfuron methyl + chlorimuron ethyl did not translate into better rice yield because of phytotoxicity
Integrated weed management in rainfed upland rice (Oryza sativa) · 2001
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
negative
Metsulfuron methyl at 4 g ha-1 produced the lowest rice grain yield, 4417 kg ha-1.
Assessment of triasulfuron on weed dynamics and yield of transplanted rice (Oryza sativa L.) · 2018
Opposite direction

17 papers more in this group

See all 21 papers →

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

128 papers: 125 positive, 3 negative or no effect

124 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative

negative
Pendimethalin and acetachlor plus bensulfuraonmethyl were ineffective for broadleaf weed control.
Performance of Different Herbicides in Dry-Seeded Rice in Bangladesh · 2014
Opposite direction
negative
Pendimethalin alone (T2) gave the maximum weed index (36.39%).
Herbicide combinations for weed control in direct-seeded rice · 2020
Opposite direction
no effect
PR-115 in paired rows with pendimethalin had weed biomass of 10.7 g m −2, similar to sequential herbicides in uniform rows.
Integrated Weed Management Using Planting Pattern, Cultivar, and Herbicide in Dry-Seeded Rice in Northwest India · 2014 · compared with sequential application of pendimethalin and bispyribac-sodium coupled with uniform rows
No difference from an alternative

124 papers more in this group

See all 128 papers →

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

135 papers: 126 positive, 9 negative or no effect

125 papers in the same direction as this paper · 5 in the opposite direction · 4 reporting no difference from an alternative

no effect
Seedling density, time to half heading and yield did not vary with pendimethalin formulation or timing.
Pendimethalin Applications in Stale Seedbed Rice Production · 2009
Opposite direction
negative
PRE application of pendimethalin at 1.32 kg ha–1 combined with clomazone at 0.36 kg ha-1 decreased rice yield.
Selectivity and weed control efficacy of some herbicides applied to sprinkler irrigated rice (Oryza sativa L.) · 2011
Opposite direction
negative
Pendimethalin toxicity in rice plants decreased tiller numbers by 39.3% at 7 days after herbicide application compared with butachlor.
Evaluation of pre-emergence herbicides for weed management and rice yield in direct-seeded rice in Cambodian lowland ecosystems · 2023 · compared with butachlor
Opposite direction

131 papers more in this group

See all 135 papers →

Halosulfuron-methyl · yield · Oryza sativa (rice)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

positive
Double penoxsulam followed by profoxydim plus halosulfuron provided the greatest rice yield.
Management of penoxsulam- and bispyribac-resistant late watergrass ( Echinochloa phyllopogon ) biotypes and rice sedge ( Cyperus difformis ) in rice · 2018
Same direction
positive
Penoxsulam plus halosulfuron LPOST rice yield was comparable to the best EPOST treatment (9,180 kg ha −1).
Evaluation of Herbicide Options for Alligatorweed (Alternanthera philoxeroides) Control in Rice · 2015 · compared with penoxsulam plus triclopyr EPOST
Same direction
positive
Pendimethalin followed by halosulfuron-methyl increased rice growth and yield components.
Bio-efficacy of pre-and post-emergence herbicides on weed control and yield of rainfed lowland rice · 2020
Same direction

1 paper more in this group

See all 5 papers →

Halosulfuron-methyl · weed · Oryza sativa (rice)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

positive
Penoxsulam, bispyribac-sodium or fenoxaprop-ethyl mixed with halosulfuron gave the lowest dry weights of grasses, broadleaves and total weeds compared with the weedy check.
INTEGRATING PRE AND POST-EMERGENCE HERBICIDES FOR CONTROLLING WEEDS IN DRILL-SEEDED RICE (ORYZA SATIVA L.) · 2018 · compared with weedy check (untreated)
Same direction
positive
Both granule formulations had excellent efficacy against most weed species.
Herbicidal Efficacy and Diffusibility of 500g Great Granule for Remote-Controlled Aerial Application in Paddy Rice · 2010
Same direction
positive
Rainbow 2.5% OD (penoxsulam) at 0.4 L/ faddan followed by Enpul 75% WG (halosulfuron-methyl) at 20 g/faddan after clover reduced total weeds by 91.7.
Effect of Preceding Winter Crops and Herbicidal Combinations on Weeds, Yield and Econemic Feasability of Broadcast-Seeded Rice Productivity. · 2016 · compared with untreated check
Same direction

1 paper more in this group

See all 5 papers →

methyl · weed · Oryza sativa (rice)Results agree

29 papers: 29 positive, 0 negative or no effect

28 papers in the same direction as this paper

25 papers more in this group

See all 29 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.