Bio-Efficacy of Post Emergence Herbicides against  Weed Control in Soybean

Patel, A. M.; Spare, N.; Malgaya, Ganesh

doi:10.20546/ijcmas.2019.804.230

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…The results of Table (6) show that there are significant differences between the averages of the treatments for the periods of herbicides spraying in the characteristic of plant height, as the spraying treatment after six weeks of germination outperformed the rest of the treatments, which did not differ significantly from the spraying treatment after four weeks of germination, and the reason may be due to the eradication of weeds Which have a high competitive ability compared to crop plants, whether broad-leaved or narrow-leaved weeds, and thus reduce competition between weeds and the crop for the most important growth requirements such as nutrients, water and light per unit area per plant. As for the effect of herbicides, the results of Table (6) showed that there are significant differences between the mean herbicide treatments, as the weed-free treatment outperformed the rest of the treatments, since all competition factors for the aforementioned growth requirements were removed from them, and this result is consistent with what was mentioned [28]. As for the interaction between the study factors, the results of Table (6) showed that there were significant differences between the averages of the study factors, as the treatment in which the tub mixture of Pentazone + Haloxifop-p-methyl (Gallant super) was used in the recommended amount after six weeks of germination excelled, which did not differ significantly from the spraying treatment after four weeks and the mixture.…”

Section: Effect Of Herbicides Spray Periods and Interactions Of Them ...supporting

confidence: 84%

The Effect of some Herbicides and Spraying Periods on the Growth and Weeds of a Soybean Crop (Glycin max L.)

Sakar,

Al-Mafrajy

2024

IOP Conf. Ser.: Earth Environ. Sci.

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A field experiment was conducted in the Kurdistan Region of Iraq for the 2022-2023 agricultural season in the fields of the Agricultural Research Station in Erbil / Ain Kawa Governorate on 5/28/2022. With the aim of knowing the effect of the herbicides (imazethapyr and the mixture of bentazone + Calant Super) and the recommended quantities for each of these pesticides and the spraying periods of these pesticides, which included four periods (two weeks, four weeks, six weeks and eight weeks) after the germination of the soybean crop of the Shaima variety). The experiment was applied according to a randomized complete block design (R.C.B.D.) as a global experiment with three replications, and the results showed that the weed-free treatment was superior to the rest of the pesticide treatments because control was used throughout the growing season and for all the studied weed characteristics, which included the percentage of control, the dry weight of the bush, and the weed index. As for the periods, Spraying: The two spraying periods were superior, two weeks after germination and four weeks. As for the dry weight characteristic of the bush, the two spraying periods were superior after four weeks and six weeks. As for the bush index characteristic, the two spraying periods were superior after six weeks and four weeks after germination. As for the effect of herbicide treatments on the characteristics of vegetative growth (plant height, number of branches, plant-1, leaf area), the treatment without weeds was superior in the characteristics of plant height and number of branches. Plant-1. As for the protective area characteristic, the pesticide mixture treatment (pentazone) was superior. + Callant Super. As for the effect of spraying periods on the characteristics of vegetative growth, the spray treatment after six weeks was superior in terms of plant height. As for the characteristics of leaf area and number of branches. Plant-1, the spray treatment after four weeks was superior and achieved the highest average.

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Section: Effect Of Herbicides Spray Periods and Interactions Of Them ...supporting

confidence: 84%

The Effect of some Herbicides and Spraying Periods on the Growth and Weeds of a Soybean Crop (Glycin max L.)

Sakar,

Al-Mafrajy

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Another study conducted in Queensland, Australia, found that preemergence applications of pendimethalin (1,496 g ha −1 ) and S-metolachlor (960 g ha −1 ) resulted in complete control (100%) of D. retroflexa in glyphosate-tolerant cotton (Iqbal et al 2019). Patel et al (2019) also found maximum biomass reduction (75%) of D. retroflexa in soybean [Glycine max (L.) Merr.] with the application of imazethapyr þ propaquizafop (75.0 þ 62.5 g ha −1 ).…”

Section: Experiments 6 Effect Of Wheat Crop Residue Amount On Emergencementioning

confidence: 97%

Germination responses of vipergrass (Dinebra retroflexa) to environmental factors and herbicide options for its control

Dhanda

Sharma²,

Chauhan³

2023

Weed Sci

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Vipergrass [Dinebra retroflexa (Vahl) Panzer] is an annual weed of the Poaceae family distributed in several parts of Australia, Asia, and Europe. Very limited information is available on its germination response to different environmental conditions. Knowledge of its seed ecology and biology could help in formulating better weed management decisions. Experiments were conducted to study the effect of alternating temperatures, light conditions, salt stress, water stress, seed burial depths, and wheat residue amounts on the germination or emergence of D. retroflexa. Also, different pre- and post-emergence herbicides were evaluated to control D. retroflexa. The highest germination (98%) was recorded at 30/20 C followed by 35/25 C (95%). Light was required for the germination of D. retroflexa. Germination decreased with an increase in sodium chloride (NaCl) concentrations. Even at 80 mM NaCl, 81% of seeds were germinated, indicating its high salt tolerance. Seed germination gradually decreased with an increase in water stress and no germination was recorded at -0.8 MPa osmotic potential. The emergence of D. retroflexa decreased with an increase in seed burial depths. The highest germination (83%) was recorded for surface-sown seeds, and emergence was reduced to zero at a burial depth of 2 cm. Seedling emergence was decreased from 82% to 2% when the crop residue load was increased from 0 to 800 kg ha-1. Applications of pre-emergence herbicides (at field rates), such as diuron, isoxaflutole, pendimethalin, pyroxasulfone, S-metolachlor, terbuthylazine, and triallate; and post-emergence herbicides, such as clethodim, haloxyfop-methyl, glufosinate, glyphosate, imazamox plus imazapyr (a commercial mixture), and paraquat resulted in complete control (100%) of D. retroflexa. Knowledge gained from this study will help to understand the potential spread of D. retroflexa to other areas and to formulate integrated weed management strategies for its effective control.

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“…This was followed by Imazethapyr at 100 g ha -1 , which resulted in a WCE of 70.76% and a B:C ratio of 1.57. Another effective treatment was Imazethapyr + Bentazone at 75 + 75 g ha -1 , which displayed a WCE of 68.38% and a B:C ratio of 1.60 at 45 days after application (DAA) [37].…”

Section: Bio-efficacy Of New Herbicide Molecules In Different Legumesmentioning

confidence: 99%

Bio-Efficacy of New Herbicide Molecules for Weed Management in Grain Legumes

Kalyani, M. S. R.,

Ameena, M.,

Srinivas, Y.

et al. 2024

JABB

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Grain legumes including pigeon pea, chickpea, peanut, soybean, lentil, cowpea, common bean, faba bean, pea, and horse gram are extensively cultivated globally. Higher protein content, coupled with symbiotic nitrogen-fixing bacteria in root nodules enabling nitrogen fixation, highlights their importance in minimizing fertilizer use for agricultural production systems. Legume cultivation is limited by prolonged weed interference which is managed either through mechanical, cultural, chemical, or biological methods separately or in combinations. Nevertheless, herbicides remain and will persist as a crucial and economical element in global crop cultivation. While first-generation herbicides benefit agriculture, their long-term persistence and off-target toxicity have significant negative consequences, causing harm to both the environment and humans. Moreover, weed resistance and similar chemistry enforce the demand for new modes of action. Therefore, continuous research into new herbicides is important for combating herbicide resistance and ensuring crop output. In recent years, a few herbicides with novel mechanisms of action have occurred. Plants treated with new-generation herbicides resulted in increased WCE (weed control efficiency), decreased weed dry matter, and seed yield. There were no or minimal phytotoxicity symptoms observed on the existing and succeeding crops. This review emphasizes the importance of newly formulated herbicides signifying high selectivity, low toxicity, target specificity, and minimal application rates, contributing to an enhanced understanding of human and environmental health. Furthermore, it emphasizes the significance of economic viability and environmental friendliness in these formulations.

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Bio-Efficacy of Post Emergence Herbicides against Weed Control in Soybean

Cited by 4 publications

References 2 publications

The Effect of some Herbicides and Spraying Periods on the Growth and Weeds of a Soybean Crop (Glycin max L.)

The Effect of some Herbicides and Spraying Periods on the Growth and Weeds of a Soybean Crop (Glycin max L.)

Germination responses of vipergrass (Dinebra retroflexa) to environmental factors and herbicide options for its control

Bio-Efficacy of New Herbicide Molecules for Weed Management in Grain Legumes

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