Glyphosate-Resistant Sourgrass Management Programs Associating Mowing and Herbicides

IF 0.8 Q3 Agricultural and Biological Sciences Planta Daninha Pub Date : 2020-01-01 DOI:10.1590/s0100-83582020380100033

R. T. Raimondi, J. Constantin, R. Mendes, R. S. Oliveira Jr, F. A. Rios

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引用次数: 6

Abstract

ABSTRACT: Currently, sourgrass is one of the most important weeds in grain production areas in Brazil. The objective of this work was to evaluate the efficiency of associated systems composed by mowing and chemical control against clumped sourgrass. In the first experiment, different mowing heights (0, 5, 10, 15 and 20 cm), coupled with complementary applications of glyphosate + clethodim, were evaluated on sourgrass control. The second experiment was composed by programs starting with fallow mowing at different times, 50 (early), 35 (intermediate) and 20 (late) days before soybean sowing. After mowing, treatments were followed by herbicide applications according to the need until soybean harvest. The shorter the mowing height associated with herbicide application, the better the control of sourgrass. The weed management programs (anticipated, intermediate and late) were efficient on sourgrass control during fallow and along soybean cycle. Weed management programs starting with mowing provided better or similar control compared to systems that employed chemical control only, indicating that mowing can replace one of the herbicide applications.

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抗草甘膦酸草管理项目相关割草和除草剂

摘要:目前，酸草是巴西粮食产区最重要的杂草之一。本研究的目的是评价刈割与化学防治相结合的系统对酸草结块的防治效果。在第一个试验中，采用不同的刈割高度(0、5、10、15和20 cm)，配以草甘膦+草硫磷(clethodim)对酸草的防治效果进行了评价。第二个试验是在大豆播种前50(早)、35(中)和20(晚)天不同时间开始休割。刈割后，根据需要施用除草剂，直至大豆收获。刈割高度越短，施用除草剂对酸草的防治效果越好。在休耕期和大豆周期中，施用预、中、晚三种杂草管理方案对酸草有较好的控制效果。与仅使用化学控制的系统相比，从割草开始的杂草管理程序提供了更好或类似的控制，这表明割草可以取代除草剂的一种应用。

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来源期刊

Planta Daninha Agricultural and Biological Sciences-Plant Science

自引率

0.00%

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审稿时长

16 weeks

期刊介绍： Planta Daninha is a scientific journal published by the Brazilian Society of Weed Science (SBCPD - Sociedade Brasileira da Ciência das Plantas Daninhas). Papers submitted for publication must be sent through an electronic system, on http://www.scielo.br/pd. Works may be written in Portuguese, English, or Spanish, and will be accepted after being reviewed and approved by the Editorial Board. Only papers that have not been published or submitted for publication in other media will be accepted. Articles in Portuguese will be translated to English after being properly corrected and authorized by the authors. Planta Daninha has with goal to publish genuine technical-scientific papers and literature reviews from a critical perspective on Biology, weed management, and related topics.