Herbicide efficacy on Borreria densiflora control in pre- and post-emergence conditions

Martins, Bianca Assis Barbosa; Christoffoleti, Pedro Jacob

doi:10.1590/s0100-83582014000400017

Cited by 9 publications

(10 citation statements)

References 10 publications

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“…Similarly to that findings in the present study, the herbicides S-metolachlor and sulfentrazone, when applied at the recommended rate, caused 100% reduction of emergence of Borreria densiflora, a species whose characteristics are similar to those of B. latifolia. However, the herbicide diclosulan, which showed only 72% of control in this study (Table 4), controlled B. densiflora effectively with only 25% of the rate (Martins and Christoffoleti, 2014).…”

Section: Resultscontrasting

confidence: 53%

“…Preliminary studies on early post-emergence applications of imazethapyr, chlorimuron-ethyl, fomesafen and glyphosate showed that the weed B. densiflora becomes tolerant to these herbicides at the stage of four-to-five leaf pairs, which hinders proper control (Martins and Christoffoleti, 2014). That is, at earlier stages (of one-to-three leaf pairs), the plants are susceptible to the action of the herbicides.…”

Section: Early Post-emergence Herbicide Applicationsmentioning

confidence: 99%

“…This finding reinforces the importance of pre-emergence herbicide applications to prevent new flows of weed emergence, because these weeds not only compete with the crop but also increase the seed bank, if they reach the end of the cycle. Knowledge is needed about both weed biology and herbicide performance on weeds over time, in order to effectively select proper herbicide rates to obtain the required residual effect, in the case of chemical management at pre-emergence (Martins and Christoffoleti, 2014). Pre-emergence herbicide applications are an important alternative to reduce the continued use of post-emergence herbicides with the same mechanism of action.…”

mentioning

confidence: 99%

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Chemical Management of Broadleaf Buttonweed and Brazilian Pusley in Different Application Methods

et al. 2019

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Increased use of glyphosate in transgenic soybean areas has selected resistant and tolerant weed species. The aim of this study was to evaluate chemical management strategies for controlling Borreria latifolia and Richardia brasiliensis at pre-emergence (Pre), early post-emergence (Poste) and late post-emergence (Postl). Six experiments were carried out in a completely randomized design with four replicates per treatment in the Pre experiments and three in the Poste and Postl experiments, for each of the species. In the Pre experiments, tests were performed with herbicides imazethapyr, sulfentrazone, chlorimuron, diclosulam, S-metolachlor and saflufenacil. In the Poste experiments, seedlings were sprayed with herbicides bentazon, fomesafen, lactofen, flumioxazin and glyphosate. In Postl experiments, adult plants received glyphosate application associated with herbicides 2,4-D, carfentrazone, imazethapyr, flumiclorac, flumioxazin, sulfentrazone, chlorimuron, saflufenacil and glufosinate, plus three sequential applications with glyphosate only and paraquat/diuron. In the experiments, there was a control treatment without application of herbicides. In the Pre experiments, the plants established at 14 and 28 days after application (DAA) were evaluated. In the Poste and Postl experiments, shoot dry matter evaluation and visual control were performed at 14 and 28 DAA. The herbicides sulfentrazone, S-metolachlor and saflufenacil suppressed the emergence of both B. latifolia as R. brasiliensis; chlorimuron-ethyl and diclosulam were effective only on R. brasiliensis. In Poste, fomesafen, lactofen and flumioxazin reached levels of control over 90% of plants of both species. In Postl, glyphosate associated with carfentrazone, flumiclorac, flumioxazin, chlorimuron-ethyl, saflufenacil, glufosinate, and sequential applications of glyphosate/glyphosate, glyphosate/paraquat+diuron, glyphosate+2,4-D/paraquat+diuron reached levels control higher than 95%.

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Section: Resultscontrasting

confidence: 53%

Section: Early Post-emergence Herbicide Applicationsmentioning

confidence: 99%

mentioning

confidence: 99%

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Chemical Management of Broadleaf Buttonweed and Brazilian Pusley in Different Application Methods

et al. 2019

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“…In the short term, buttonweed control tactics should include chemical management (Martins and Christoffoleti, 2014), given that its emergence is favored in the absence of, or with low amounts of crop straw on the soil surface.…”

Section: Resultsmentioning

confidence: 99%

Buttonweed emergence as affected by seed burial depth and straw on the soil surface

Martins

Christoffoleti

2015

Sci. agric. (Piracicaba, Braz.)

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Knowledge of the effects of seed burial depth and the presence of straw on the soil surface on weed seedling emergence provides useful information for the development of weed management tactics. Buttonweed (Borreria densiflora DC.) is a troublesome weed that occurs in large infestations in soybean and sugarcane crops from north-central Brazil. This study investigated buttonweed emergence at different seed burial depths and straw amounts present on the soil surface. The experiment was conducted in greenhouse conditions, under a factorial design between four seed burial depths and four amounts of surface straw. Percent seedling emergence and fresh biomass (g) were evaluated at twenty-five days after installation (DAI). Greater buttonweed emergence occurred in seeds that were placed on the soil surface either without surface straw or with up to 1,000 kg ha −1 of straw on the soil surface. With 4,000 kg ha −1 of surface straw, buttonweed emergence was prevented when seeds were placed at a depth of 0.5 cm or deeper in the soil. These data indicated emergence of this weed species was greater at depths near the soil surface and in soils with the least amounts of surface straw. Information generated in this study provides a starting point for the development of knowledge for understanding the biology of buttonweed emergence and its population dynamics. Such information may be directly transmitted to growers and lays the groundwork for an integrated management approach for this weed species.

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“…Mixtures of glyphosate and other herbicides have been reported to be effective for the control of other plants of the genus Spermacoce , including mixtures of glyphosate + 2,4‐D (Ferreira et al ., ; Martins & Christoffoleti, ). The control failures related to the herbicides acetolactate synthase (ALS) and protoporphyrin oxidase (PROTOX) observed here also should be further studied, with this population being compared with other populations of the same species, as there are reports of controlling this species with the same products (Martins & Christoffoleti, ; Magi, ). Cases of resistance to PROTOX inhibitors should be especially considered because these cases are generally accompanied by resistance to ALS‐inhibiting herbicides and because PROTOX inhibitors are herbicides usually used as an alternative to ALS inhibitors (Salas et al ., ; Heap, ).…”

Section: Discussionmentioning

confidence: 99%

Absorption and translocation of glyphosate in Spermacoce verticillata and alternative herbicide control

Fadin¹,

Tornisielo²,

Barroso

et al. 2018

Weed Research

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Glyphosate has been associated with control failures for Spermacoce verticillata in some Brazilian States. The objective of this work was to evaluate and determine the possible causes of this and propose alternative herbicides to use. Glyphosate was applied at three plant stages of development (2-4 leaves, 4-6 leaves and full bloom) where foliar absorption and translocation of glyphosate to various plants parts and time were analysed using the 14 C technique. Data were submitted to nonlinear regressions and analysis of variance, where means were compared by a Tukey test at 5% probability. Plant control by the application of different herbicides (19) in the same three stages of development of weed was evaluated. Twenty-one days after herbicide application, control was visually evaluated and data analysed and means were compared.Due to absorption and/or translocation problems, S. verticillata plants were not controlled by glyphosate. Plants with 4-6 leaves showed lower absorption and translocation of the herbicide to the leaf/root regions compared with plants at the beginning of their development. Plants at full bloom showed lower translocation of the herbicide to the root. In addition to the application of glyphosate at early stages of development, the application of paraquat, flumioxazin and mixtures of glyphosate with flumioxazin or cloransulam is recommended. Late applications could result in poor control, principally if glyphosate is used. Therefore, early applications are strongly recommended for control of this species.

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Herbicide efficacy on Borreria densiflora control in pre- and post-emergence conditions

Cited by 9 publications

References 10 publications

Chemical Management of Broadleaf Buttonweed and Brazilian Pusley in Different Application Methods

Chemical Management of Broadleaf Buttonweed and Brazilian Pusley in Different Application Methods

Buttonweed emergence as affected by seed burial depth and straw on the soil surface

Absorption and translocation of glyphosate in Spermacoce verticillata and alternative herbicide control

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