Fluazifop-P-Butyl Efficacy as a Function of Application Time and Herbicide Dose

Cieslik, Lucas Fernando; Vidal, Ribas Antônio; Machado, Aline Fernanda Perez; Trezzi, Michelangelo Müzell

doi:10.1590/s0100-83582017350100011

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Better control levels of clomazone+amethrin, sulfentrazone and tebuthiuron on different weeds was observed on plants under favorable growing conditions (Souza et al 2014). Similar results were observed for glyphosate and different ACCase inhibitor herbicides (Ramsey et al 2005;Mohr et al 2007;Cieslik et al 2013Cieslik et al , 2014Cieslik et al , 2017.…”

Section: Introductionsupporting

confidence: 77%

Control of Ipomoea grandifolia and antioxidant enzyme activity with bentazon and glyphosate at times and soil water conditions

Salomão¹,

Trezzi²,

Pagnoncelli³

et al. 2021

Commun. Plant. Sci.

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Weed management with herbicides requires favorable environmental conditions, that maximize efficiency, such as soil humidity and timing of application. The aim of this study was to assess the effect of the application timing of bentazon and glyphosate herbicides on the control and activity of antioxidant enzymes in Ipomoea grandifolia, under different conditions of soil water availability. Two experiments, one for each herbicide (bentazon and glyphosate), were conducted in a factorial design with four replicates. The first factor was the two rates of each herbicide (504 and 720 g i.a. ha -1 of bentazon and 651 and 911.4 g i.a. ha -1 of glyphosate). The second factor was the six application times (1 am; 5 am; 9 am; 1 pm; 5 pm and 9 pm). The third factor, soil water content (100% and 50% of field capacity). Plus, two controls without herbicide application. At 21 days after application (DAA) of bentazon and 28 DAA of glyphosate, the fresh mass of the aboveground plants was measured. In addition, the activities of the enzymes superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) were determined. For plants under water restriction, an increase of approximately 20% in fresh mass was observed compared in plants without water restriction, indicating lower control efficiency under water stress condition. For bentazon, at 1 pm has been observed the lowest herbicide efficiency, the other times were the most efficient, and did not differ. For glyphosate, the application at 9 am was the most efficient, while at 1 am provided the worst control efficiency. Higher CAT and SOD activities after bentazon application were observed at 1 pm. Among the three enzymes evaluated, SOD presented the highest activity after glyphosate application. Generally, the times of the day with the highest peak of enzymatic activity were distinct between with and without water restriction. Highlighted Conclusions1. Water restriction reduces the efficiency of bentazon and glyphosate. 2. Better efficiency for bentazon was observed at 1 am, 5 am, 9 am, 5 pm and 9 pm. 3. Better efficiency for glyphosate was observed at 9 am.

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Section: Introductionsupporting

confidence: 77%

Control of Ipomoea grandifolia and antioxidant enzyme activity with bentazon and glyphosate at times and soil water conditions

Salomão¹,

Trezzi²,

Pagnoncelli³

et al. 2021

Commun. Plant. Sci.

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“…Fluazifop-P-butyl is a strong inhibitor of the enzyme acetyl-coenzyme A carboxylase (ACCase) in which it precludes the synthesis of malonyl-CoA (committed step of fatty acid in plants), thus controlling the grass weeds. It is appropriate to combine it with post.em herbicides to control broad-leaf weeds (Cieslik et al, 2017). In Serbia, pre.em herbicides (flurochloridone and napropamide) and post.…”

Section: Introductionmentioning

confidence: 99%

Weed composition and control in apple orchards under intensive and extensive floor management

Dudić

Meseldžija

Ljevnaić‐Mašić

et al. 2020

Chil. j. agric. res.

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Weed control in apple tree (Malus domestica [Suckow] Borkh.) orchards continues to be a major problem. Weeds compete with fruit trees, which is manifested in production quality and quantity. The aim of this study was to determine the weed flora of apple orchards with different floor management practices and to investigate the efficacy of the diquat, oxyfluorfen, glyphosate, and fluazifop-P-butyl herbicides. Experiments were conducted during 2015 and 2016 in orchards under intensive (Ruski Krstur) and extensive (Sombor) floor management. Annual, perennial broad-leaf, and grass weeds were identified. Dominant weed species in both apple orchards were Poa annua, Hordeum murinum, Conyza canadensis, Portulaca oleracea, Cynodon dactylon, Sorghum halepense, Carduus acanthoides, Amaranthus retroflexus, Cirsium arvense, Chenopodium album, and Solanum nigrum. After the first and second assessments, the best results occurred with glyphosate in both orchards and total efficacy ranged from 88.42% to 98.32% in the orchard under intensive floor management and 90.32% to 95.55% in the orchard under extensive floor management. Diquat and oxyfluorfen have shown good results, but their efficacy was lower than for glyphosate. Fluazifop-P-butyl, as a selective herbicide, showed low efficacy at both sites; it had high efficacy on grass weeds, but no effects on broad-leaf weeds.

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Effect of day time climatic conditions associated with different 2,4-D formulations on spray deposition and weed control

Contiero

Rios

Biffe

et al. 2019

Journal of Environmental Science and Health, Part B

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Fluazifop-P-Butyl Efficacy as a Function of Application Time and Herbicide Dose

Cited by 3 publications

References 13 publications

Control of Ipomoea grandifolia and antioxidant enzyme activity with bentazon and glyphosate at times and soil water conditions

Control of Ipomoea grandifolia and antioxidant enzyme activity with bentazon and glyphosate at times and soil water conditions

Weed composition and control in apple orchards under intensive and extensive floor management

Effect of day time climatic conditions associated with different 2,4-D formulations on spray deposition and weed control

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