Effect of Pretilachlor on Weedy Rice and Other Weeds in Wet-Seeded Rice Cultivation in South Vietnam

Chauhan, Bhagirath Singh; Ngoc, Son Tran Thi; Dinh, Duong Tran; Ngoc, Phuong Le

doi:10.1626/pps.17.315

Cited by 10 publications

(10 citation statements)

References 12 publications

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“…Among weedicide application of pretilachlor @ 1 kg/ha + bispyribac sodium @ 25 g/harecorded maximum harvest index (34.56%) and lowest weed index (2.58%) compared to weedy check. Chauhan et al 2014 reported that application of pretilachlor resulted in a significant increase in grain yield compared with non treated control.…”

Section: Yield and Yield Attributesmentioning

confidence: 99%

Weed Management Practices in Direct Seeded Rice in Medium Land under Rainfed condition of Sub Agro Climatic Zone – VI

Kumar¹,

Binjha²,

Pandey³

2022

EEC

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The field experiment was conducted at Zonal Research Station, Darisai, East Singhbhum, Jharkhand during kharif season from 2016 to 2017 to study the weed management practices in direct seeded rice in medium land underrainfed condition of sub agro climatic zone – VI to find out the most suitable and effective weed management practices in direct seeded rice. All the treatments were tested in random bock design with three replication and nine treatments i.e., T1: Butachlor @1kg a.i/ha, pre emergence, T2: Pretilachlor @1kg a.i/ha, pre emergence, T3 :Pendimethalin @1kg a.i /ha, T4: Bispyribac sodium @ 25 g a.i/ha, at 15 DAS, T5: Butachlor @1kg a.i/ha+ Bispyribac sodium @ 25 g a.i/ha, T6 : Pretilachlor @1kg a.i/ha+ Bispyribac sodium @ 25 g a.i/ha, T7: Pendimethalin @1kg a.i /ha+ Bispyribac sodium @ 25 g a.i/ha, T8 : HW at 20 and 40 DAS, T9: Weedy check. In experiment result showed that the application of pretilachlor @ 1 kg a.i./ha + bispyribac sodium @ 25 g a.i./ha at 15 DAS increased WCE (85.4%), yield (34.6 q/ha) and B:C ratio (1.54) and also proved to be the most cost effective weed management practice in direct seeded rice.

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Section: Yield and Yield Attributesmentioning

confidence: 99%

Weed Management Practices in Direct Seeded Rice in Medium Land under Rainfed condition of Sub Agro Climatic Zone – VI

Kumar¹,

Binjha²,

Pandey³

2022

EEC

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“…Similarly, moisture regime is an important parameter that affects pretilachlor degradation in agricultural soils. Pretilachlor was found to be highly effective herbicide in saturated soil conditions (Chauhan et al, 2014); however, rapid degradation in soil was observed under the flooded conditions (anaerobic conditions) as compared to the wetted conditions (aerobic conditions) (Moon et al, 1988). A study on three soil series, namely, Selangor, Sabrang, and Bernam series, showed that degradation of the herbicide in soils with higher moisture levels was high (Ismail & Handah, 1999).…”

Section: Factors Affecting Pretilachlor Degradationmentioning

confidence: 99%

Ultimate fate, transformation, and toxicological consequences of herbicide pretilachlor to biotic components and associated environment: An overview

Dhanda

Beniwal

Yadav

et al. 2023

J of Applied Toxicology

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Herbicides are applied for effective weed management in order to increase the crop yield. In recent decades, the overuse of these chemicals has posed adverse effects on different biotic components of the environment. Pretilachlor has been widely used during last few decades for weed management in paddy crop. Its excessive use may prove fatal for environment, various organisms, and nontarget plants. Thus, it is pertinent to know the extent to which herbicide residues remain in environment. The potential mobility and the release rate of herbicide in the soil are important factors governing ecotoxicological impact and degradation rate. Therefore, several techniques are being investigated for its effective removal from the contaminated sites. Furthermore, efforts have also been made to study the degradation of pretilachlor by various physicochemical processes, resulting into the formation of different types of metabolites. This review summarizes the available information on environmental fate, various degradation processes, microbial biotransformation, metabolites formed, ecotoxicological effects, techniques for detection in environmental samples, effect of safener, and various control release formulations for sustained release of pretilachlor in applied fields. The information so obtained will be very advantageous in deciding the future policies for safe and judicious use of the herbicide by maintaining health and environmental sustainability.

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“…The fenclorim seed treatment rate of 2.5 g ai kg −1 of seed was derived from the maximum use rate of pretilachlor and fenclorim of 450 and 225 g ai ha −1 , respectively (Chauhan et al 2014;Quadranti and Ebner 1983). With an inbred rice cultivar planting rate of 90 kg of seed ha −1 , the amount of fenclorim per hectare is equivalent to the foliar use rate.…”

Section: Fenclorim Dose Responsementioning

confidence: 99%

“…Fenclorim was developed by the Ciba-Geigy company in the 1980s and released as a mixture with pretilachlor, another chloroacetamide herbicide similar to acetochlor (Quadranti and Ebner 1983). Pretilachlor has been widely used to control weeds in rice production systems in Asia when fenclorim is used in conjunction with the herbicide to mitigate injury (Chauhan et al 2014;Chen et al 2013). Fenclorim mitigates rice injury from pretilachlor by reduced total uptake and improved degradation of the herbicide (Scarponi et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Rice tolerance to acetochlor with a fenclorim seed treatment

et al. 2022

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Rice producers in the U.S. need effective herbicides to control problematic weeds. Previous research has demonstrated that acetochlor can provide in-season weed control in rice; however, undesirable injury is common. Thus, trials were initiated in 2020 and 2021 to evaluate 1) rice cultivar tolerance to microencapsulated (ME) acetochlor with the use of a fenclorim seed treatment at 2.5 g ai kg-1 of seed, 2) a dose-response of a fenclorim seed treatment with ME acetochlor, and 3) rice tolerance to fenclorim and ME acetochlor under cool, wet conditions. For all trials, acetochlor was applied delayed-preemergence (4 to 7 days after planting). In the dose-response trials and in the presence of acetochlor, the fenclorim seed treatment rate of 2.5 g ai kg-1 reduced rice injury and increased rice plant heights and shoot numbers relative to acetochlor without fenclorim and was comparable to the nontreated control in all evaluations. In the cultivar screening, 14 of 16 cultivars exhibited < 20% injury with acetochlor at 1,260 g ai ha-1 and fenclorim at 2.5 g ai kg-1 2 weeks after emergence (WAE) at the Pine Tree Research Station (PTRS). At the Rice Research and Extension Center (RREC) 2 and 4 WAE and PTRS 4 WAE, all cultivars exhibited < 20% injury with acetochlor and fenclorim. The fenclorim seed treatment in the presence of acetochlor provided comparable rice plant height, shoot numbers, groundcover, and rough rice yield to the nontreated control. Under cool, wet conditions, rice injury without fenclorim ranged from 15 to 60% with acetochlor at 1,050 g ai ha-1, while injury from acetochlor with the fenclorim seed treatment ranged from 0 to 20%. Based on the results of these experiments, the fenclorim seed treatment appears to safen an assortment of rice cultivars from injury caused by ME acetochlor.

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Effect of Pretilachlor on Weedy Rice and Other Weeds in Wet-Seeded Rice Cultivation in South Vietnam

Cited by 10 publications

References 12 publications

Weed Management Practices in Direct Seeded Rice in Medium Land under Rainfed condition of Sub Agro Climatic Zone – VI

Weed Management Practices in Direct Seeded Rice in Medium Land under Rainfed condition of Sub Agro Climatic Zone – VI

Ultimate fate, transformation, and toxicological consequences of herbicide pretilachlor to biotic components and associated environment: An overview

Rice tolerance to acetochlor with a fenclorim seed treatment

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