Sensibilidade do capim-capivara a herbicidas

Silva, K.S.; Machado, Sérgio Luiz de Oliveira; Avila, Luis Antônio de; Marchesan, Enio; Alves, Marcos Vinícius Palma; Urban, Leonardo José Kurtz

doi:10.1590/s0100-83582012000400016

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…The inhibition of GS suppresses the assimilation of ammonium; the unassimilated ammonium is associated with the rupture of the chloroplast structure and indirectly with the photochemical phase of photosynthesis by blocking the electron transport chain (Dayan and Zaccaro 2012;Tan et al 2006) and with photorespiration due to reduced levels of amino acids (Dayan and Duke 2014). These effects are followed by chlorosis, wilting, and necrosis, causing the plants to die within 2 wk (Hoagland 2000;Silva et al 2012).…”

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Variation in the Sensitivities of Hairy Beggarticks (Bidens pilosa) Plants and Their Progenies to Glufosinate Ammonium

Brito¹,

Marchesi²,

Pucci³

et al. 2016

Weed sci.

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The objective of this study was to evaluate the response of hairy beggarticks plants to different doses of glufosinate ammonium and the range in sensitivities of the plants and their progenies to the herbicide. Three studies were conducted, all in a greenhouse and repeated at different times. In the first study, two experiments were conducted to examine the dose–response curve, and the treatments were seven different doses of the herbicide glufosinate ammonium (0, 50, 100, 200, 400, 800, and 1,600 g ai ha−1), with four replications each. In the second study, which examined the range in sensitivity of hairy beggarticks to glufosinate ammonium, 44 plants were sprayed with a dose of 200 g ai ha−1of the herbicide. Finally, in the third study, the range in sensitivity of the progeny of hairy beggarticks to glufosinate ammonium was investigated; in this experiment, the progenies of seven of the previous plants were sprayed with 200 g ai ha−1of herbicide. The ammonium contents in the tissues were measured and percent injury wase visually assessed. Ammoniun content in hairy beggarticks leaves was increased more than seven times by glufosinate application and the maximum ammonium content was observed for the highest dose of the herbicide. Variability existed in the ammonium content among the individuals of the population of hairy beggarticks; however, the behavior was not replicated in the same way in the progenies. The survival of the plants after application of the herbicide allows the production of progenies with wide variability in their sensitivity to the product, independent of the behavior for the progenitor plants.

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confidence: 99%

Variation in the Sensitivities of Hairy Beggarticks (Bidens pilosa) Plants and Their Progenies to Glufosinate Ammonium

Brito¹,

Marchesi²,

Pucci³

et al. 2016

Weed sci.

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Hymenachne amplexicaulis (hymenachne)

Jacono¹

2022

CABI Compendium

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Efficacy of imazapic/imazapyr and other herbicides in mixtures for the control of Digitaria insularis prior to soybean sowing

Albrecht

Silva

et al. 2020

Agron. Colomb.

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Herbicide mixtures, use of multiple sites of action, and other weed management practices are necessary to avoid cases of biotype resistance. The aim of this study was to evaluate the efficiency of imazapic/imazapyr and other herbicides in mixtures to control Digitaria insularis at burndown before soybean sowing. This field research was conducted in Umuarama, State of Parana (PR), Brazil, in the 2018/19 soybean season. The experiment was conducted in a randomized block experimental design with four replications and 11 treatments composed of the application of glyphosate, clethodim, haloxyfop, imazapic/imazapyr, glufosinate, 2,4-dichlorophenoxyacetic acid (2,4-D), dicamba, triclopyr, and saflufenacil, in mixtures. Weed control was evaluated as well as soybean injury and yield. An analysis of variance and F-test were performed, and the treatment means were compared by the Scott-Knott test. All treatments showed great control over the weed and low crop injury rate while maintaining soybean yield. The application of imazapic/imazapyr in mixtures with other herbicides was effective in controlling glyphosate-resistant D. insularis in burndown before soybean sowing and with sequential application of haloxyfop + glyphosate at V3 stage of soybean. This chemical management was also selective for soybean.

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Sensibilidade do capim-capivara a herbicidas

Cited by 3 publications

References 12 publications

Variation in the Sensitivities of Hairy Beggarticks (Bidens pilosa) Plants and Their Progenies to Glufosinate Ammonium

Variation in the Sensitivities of Hairy Beggarticks (Bidens pilosa) Plants and Their Progenies to Glufosinate Ammonium

Hymenachne amplexicaulis (hymenachne)

Efficacy of imazapic/imazapyr and other herbicides in mixtures for the control of Digitaria insularis prior to soybean sowing

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