Pre-sowing application of combinations of burndown and pre-emergent herbicides for Conyza spp. control in soybean

Q4 Agricultural and Biological Sciences

Agronomia Colombiana Pub Date : 2021-01-01 DOI:10.15446/AGRON.COLOMB.V39N1.89545

A. Albrecht, L. Albrecht, Samuel Alves, A. F. M. Silva, Weslei de Oliveira Silva, J. B. Lorenzetti, M. T. Y. Danilussi, A. Barroso

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引用次数: 4

Abstract

Together, Conyza bonariensis, C. canadensis and C. sumatrensis show 105 reported cases of biotypes resistant to herbicides like glyphosate, paraquat, and acetolactate synthase (ALS) inhibitors. The application of pre-emergent herbicides combined with burndown herbicides is believed to be effective in controlling Conyza spp. during soybean pre-sowing management. The objective of this study was to evaluate the efficacy of sulfentrazone/diuron, imazethapyr/flumioxazin, and diclosulam in mixtures with diquat, paraquat, or glufosinate on the control of Conyza spp. Two field experiments were conducted in a randomized block design with four replicates. Treatments consisted of the application of pre-emergent plus burndown herbicides, besides the weedy control treatment (without application), for a total of 10 treatments. The control of Conyza spp. was evaluated at 7, 14, 21, 28, and 35 d after herbicide application, and symptoms of injury in soybean plants were evaluated at 14, 21, 28, and 35 d after herbicide application. The herbicides sulfentrazone/diuron, imazethapyr/flumioxazin, and diclosulam in combination with burndown herbicides diquat, paraquat, or glufosinate were effective in controlling Conyza spp. in the pre-sowing management of soybean, highlighting good options for pre- and post-emergent herbicide rotations. Mixtures with diclosulam showed a higher potential for injury to soybean plants than sulfentrazone/diuron and imazethapyr/flumioxazin.

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播前施用燃燃与苗期除草剂防治大豆灰霉病的研究

博纳里稻、加拿大稻和苏门答腊稻共报告了105例对草甘膦、百草枯和乙酰乳酸合成酶（ALS）抑制剂等除草剂具有耐药性的生物型病例。在大豆播前管理过程中，应用发芽前除草剂和燃尽除草剂相结合的方法可以有效地控制稻瘟病。本研究的目的是评估磺entrazone/diuron、imazethapyr/flumioxazin和diclosulam与diquat、百草枯或草膦的混合物对稻瘟病的防治效果。在随机区组设计中进行了两个田间实验，共四个重复。除杂草控制处理（不施用）外，共施用10个处理，其中包括施用紧急前加燃尽除草剂。在施用除草剂后7、14、21、28和35天对稻瘟病的防治进行评估，并在施用除草剂之后14、21和28天对大豆植株的损伤症状进行评估。在大豆的播种前管理中，除草剂磺嘧磺酮/敌草隆、咪唑并吡/氟米恶嗪和双氯舒拉姆与燃耗除草剂敌枯、百草枯或草膦联合使用对稻瘟病有效，突出了紧急前和紧急后除草剂轮作的良好选择。与嘧磺隆/敌草隆和咪唑吡嗪/氟米恶嗪相比，双氯舒拉姆混合物对大豆植株的伤害潜力更大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Agronomia Colombiana Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

25 weeks

期刊介绍： Agronomia Colombiana journal it is intended to transfer research results in different areas of tropical agronomy. Original unpublished papers are therefore accepted in the following areas: physiology, crop nutrition and fertilization, genetics and plant breeding, entomology, phytopathology, integrated crop protection, agro ecology, weed science, environmental management, geomatics, biometry, soils, water and irrigation, agroclimatology and climate change, post-harvest and agricultural industrialization, food technology, rural and agricultural entrepreneurial development, agrarian economy, and agricultural marketing (Published: Quarterly).