Seletividade de herbicidas residuais ao feijão-comum durante o período inicial da fase vegetativa

Kalsing, Augusto; Vidal, Ribas Antônio

doi:10.1590/s0100-83582013000200019

Cited by 5 publications

(4 citation statements)

References 10 publications

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“…Among many tools available to study plants competition in a community, it is possible to highlight the studies that take into account the weed interference periods, compared to a crop of interest (Swanton et al 2015), and also the economic threshold level (ETL) (Galon et al 2007;Agostinetto et al 2010). In this way, this is another study with applicability, since it relates grain yield losses using the density, dry matter, soil cover and leaf area of weeds compared to control costs, allowing to evaluate the gain obtained according to the treatment (Kalsing and Vidal 2013). Studies on the interference and competitiveness of weed and crops allow developing more effective weed management strategies with less impact on the environment (Zhang et al 2016).…”

Section: Plant Protection -Articlementioning

confidence: 99%

Weed interference period and economic threshold level of ryegrass in wheat

et al. 2019

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The results allowed concluding that the management methods of weed ryegrass must be adopted in the period between 11 and 21 days after crop emergence, which is described as a critical period of control of this weed. The wheat grain yield loss competing with ryegrass reached 59% when grown with ryegrass. For ETL, the linear regression model of the rectangular hyperbola adequately estimates grain yield losses in the presence of ryegrass. The cultivar presenting the lowest values of ETL, that is, less capacity to live with the weed, was TBIO Alvorada. The other cultivars presented similar ETL values.

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Section: Plant Protection -Articlementioning

confidence: 99%

Weed interference period and economic threshold level of ryegrass in wheat

et al. 2019

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“…Kalsing and Vidal [20] , in a study conducted in a greenhouse (Dual Gold® 915 g L -1 , using dosages of 1200, 1800, 2400 and 3600 g/ha) it was again shown that the herbicide ha dno significative effect on the emergency of bean plants, regardless of the dosage tested. However, there was an effect reducing the root dry mass and shoot dry mass (the later only for the highest concentration tested).…”

Section: Discussionmentioning

confidence: 93%

Efects of a S-Metolachlor Based Herbicide on Two Plant Models: Zea Mays L. And <i>Lactuca Sativa L.</i>

Silva¹,

Palmieri²,

Andrade-Vieira³

2022

Preprint

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Brazil is the number-one country in pesticide consumption, and corn is the second most cultivated crop in the country. Chemical control of weeds associated with corn cultivation is performed by application of herbicides with pre- and postemergence action, such as S-metolachlor. Currently, the toxicity of herbicides is a task of great concern. In this regard, the present study aimed to evaluate the effects of an S-metolachlor-based herbicide through bioassays with the plant model Lactuca sativa L. (lettuce) and Zea mays L. (maize). The herbicidal test solutions containing 7.5, 15, 30, 60, 120, 240, 360, 480, 600, and 720 mg L-1 of the active ingredient S-metolachlor were prepared from commercial products. Distilled water was used as a negative control, and aluminum was used as a positive control. Macroscopic analyses (germination and growth) were performed for the two species, and microscopic analyses (chromosomal and nuclear changes) were performed for L. sativa. Negative interference of the S-metolachlor-based herbicide on lettuce was observed for all macroscopic and microscopic parameters tested. In maize, there was no significant interference in germination; however, the herbicide interferes negatively in seedling development. In brief, the herbicide based on S-metolachlor has phytotoxic potential, just as discussed.

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“…For Kalsing and Vidal (2013), several specific factors, such as environmental conditions, soil attributes and crop management, among others, may affect crops tolerance to herbicides in higher or lower levels.…”

Section: Resultsmentioning

confidence: 99%

Performance of Crops Grown in Succession to Soybeans Treated with Different Residual Herbicides

et al. 2018

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Herbicides with residual effect applied in soybeans may affect the productivity of late harvest crops grown in succession. Thus, the objective of this research was to evaluate the agronomic performance of adzuki bean crops, crambe, millet and palisade grass pasture grown in succession to soybean crop treated with residual herbicides, as well as assess the contribution in weed management. Four trials were conducted in field conditions at the soybean crop in the harvest and then succeeded by adzuki bean crops, crambe, millet and palisade grass as late harvest. An experimental design was adopted in a randomized block arrangement with four replications and nine treatments represented by the application of residual herbicides: imazethapyr (1.0 and 1.5 L ha-1), chlorimuron (60 and 90 g ha-1), fomesafen (1.0 and 1.5 L ha-1) and chloransulan methyl (74.6 and 71.4 g ha-1) and without herbicide control, kept in manual weeding. The herbicides were efficient in weed control in soybeans, not affecting crop yield. However, there was no residual activity of herbicides contribution in reducing infestation in the late harvest crops. The herbicides did not promote phytotoxicity to crops of crambe, beans, millet and palisadegrass pasture when they were compared with the other treatments. The beans treated with methyl chloransulan, regardless of dose, showed a higher yield. The absence of phytotoxicity to crops can be associated with rainfall incident on soybens which contributed to the dissipation of herbicides.

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Seletividade de herbicidas residuais ao feijão-comum durante o período inicial da fase vegetativa

Cited by 5 publications

References 10 publications

Weed interference period and economic threshold level of ryegrass in wheat

Weed interference period and economic threshold level of ryegrass in wheat

Efects of a S-Metolachlor Based Herbicide on Two Plant Models: Zea Mays L. And <i>Lactuca Sativa L.</i>

Performance of Crops Grown in Succession to Soybeans Treated with Different Residual Herbicides

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