Bio-Efficacy of different tank mix herbicides for weed control in soybean [Glycine max (L.) Merrill]

Bhimwal, Jai Prakash; Verma, Arvind; Nepalia, V.; Gupta, Versha

doi:10.18805/lr-4009

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Вирощування сої за інтенсивною технологією передбачає використання високоефективних гербіцидів, особливо страхових або післясходових (Anastassiadou et al, 2019;Slife, 1956). При цьому є можливість виділяти домінуючі їх види і грамотно використовувати відповідні гербіциди або їх суміші (Bhimwal et al, 2019;). Мінімалізація обробітку ґрунту сприяє накопиченню в ґрунті насіння бур'янів та їх інтенсивному розвитку (Tsyliuryk, et al, 2017;.…”

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Efficiency of post-emergence (“insurance”) herbicides in soybean crops of the Northern Steppe of Ukraine

Tkalich¹,

Tsyliuryk²,

Rudakov³

et al. 2021

Agro

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Loss of soybean yields from weeds can reach 30–50%. Chemical methods of their control are of primary importance for obtaining the maximum grain yield. The critical period for weed control is stage from the first to third true leaf of the crop. The most active growth of unwanted vegetation in soybean crops is observed in the spring-summer period. And if during this period you can mainly suppress weeds, then in the future the crops will be relatively clean. In years when there is a sharp lack of moisture at the beginning of the growing season, a significant part of the plant seedlings appear at a later date, which creates additional problems for crop protection. In order to optimize weed protection measures, it is first necessary to know clearly the species composition of weeds in each specific agrocenosis. The development of highly effective systems of chemical protection of soybean crops against weeds largely depends on the application of highly effective herbicides. The maximum results in the control of weeds, in particular Сommon ragweed, at the time of renewal of spring vegetation, among the preparations used by as were provided by herbicides and their tank mixtures in variants with application of tank mixtures: Harmony: 8–10 g/ha + Command – 0,20–0,25 l/ha + Trend – 300 ml/ha. Here the technical efficiency was at the level of 70,0–72,0%. The increase of technical efficiency in variants with the application of tank mixtures of preparations was determined: Harmony – 8 g/ha + Command – 0,25 l/ha + Trend – 300 ml/ha; Harmony – 10 g/ha + Team – 0,20 l/ha + Trend – 300 ml/ha; Harmony – 10 g/ha + Team – 0,25 l/ha + Trend – 300 ml/ha and Harmony – 8 g/ha + Bazagran – 2,0 l/ha + Trend – 300 ml/ha. Spraying with herbicides and their tank mixtures in general made it possible to save from 0,81 to 1,01 t/ha of soybean grain, compared with the control without herbicides. Herbicide preparations differed slightly regarding the effect on the grain yield. It is necessary to distinguish only tank mixtures: Harmony – 10 g/ha + Commands – 0,20 l/ha + Trend –300 ml/ha; Harmony – 10 g/ha + Team – 0,25 l/ha + Trend – 300 ml/ha; Harmony – 8 g/ha + Bazagran – 2,0 l/ha + + Trend – 300 ml/ha, as well as Harmony – 12 g/ha. The indices of yields on these variants were maximum and amounted to 2,28; 2,31; 2,31 and 2,29 t/ha, which was more than the control by 43, 44, 44 and 43%, respectively.

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Section: вступunclassified

Efficiency of post-emergence (“insurance”) herbicides in soybean crops of the Northern Steppe of Ukraine

Tkalich¹,

Tsyliuryk²,

Rudakov³

et al. 2021

Agro

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Bio-efficacy of fomesafen + fluazifop-p-butyl mixture against weeds and its effect on productivity and profitability of soybean (Glycine max) in Central India

et al. 2023

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Grassy and broadleaf weeds are simultaneously growing in soybean (Glycine max L.) crop and there is a lack of herbicides to control all types of weeds in a soybean crop. Thus, a field experiment was conducted during rainy (kharif) seasons of 2017 and 2018 to evaluate efficacy of fomesafen + fluazifop-p-butyl mixture against weeds and consequent improvement in productivity of soybean. Bio-efficacy was evaluated with 10 weed control treatments comprising of 4-doses of fomesafen + fluazifop-p-butyl mixture (90+90, 110+110, 130+130 and 220+220 g/ha), alone application of imazethapyr (100 g/ha), market check – fomesafen + fluazifop-p-butyl (110 + 110 g/ha), combined application of imazethapyr + imazamox (35 + 35 g/ha) as early post-emergence, hand weeding twice at 15 and 30 DAS, weedfree and weedy-check, were laid-out in a randomized complete block design with three replications. Application of premix fluazifop-p-butyl + fomesafen (130+130 g/ha) as early-post-emergence resulted in lower density, dry weight of all individual weeds with 99.2% weed control efficiency (WCE) and higher value of yield parameters and yield (2.01 t/ha) of soybean which was statistically at par with weed-free plots (2.04 t/ha). The higher dose of fomesafen + fluazifop-p-butyl (220+220 g/ha) was found effective against weeds but caused phytotoxicity to soybean crop and reduced seed yield marginally (1.98 t/ha). The fomesafen residues up to 130 g/ha dose were found below the detectable limit in the soil with zero per cent persistence at harvest. However, the highest dose of fomesafen (220 g/ha) resulted in residues in soil (0.016 μg/g) with 4.44% persistence and half-life of 13 days. These results suggested that premixfomesafen + fluazifop-p-butyl at 130+130 g/ha as early-post-emergence can be safe for the application in soybean crop.

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Bio-Efficacy of different tank mix herbicides for weed control in soybean [Glycine max (L.) Merrill]

Cited by 2 publications

References 9 publications

Efficiency of post-emergence (“insurance”) herbicides in soybean crops of the Northern Steppe of Ukraine

Efficiency of post-emergence (“insurance”) herbicides in soybean crops of the Northern Steppe of Ukraine

Bio-efficacy of fomesafen + fluazifop-p-butyl mixture against weeds and its effect on productivity and profitability of soybean (Glycine max) in Central India

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