芳基苯氧丙酸盐耐受性和非耐受性玉米:乙酰辅酶a羧化酶抑制剂应用后的株背间隔

IF 0.8 Q3 Agricultural and Biological Sciences
Rafael R. Mendes, Luiz H. M. Franchini, Felipe R. Lucio, Luiz H. S. Zobiole, Rubem S. Oliveira Jr.
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引用次数: 1

摘要

背景:禾草作物播种前施用乙酰辅酶a羧化酶(ACCase)抑制剂可能会由于这些除草剂在土壤中的残留作用而导致作物受损。假设不同的玉米杂交品种和不同的ACCase除草剂可导致不同的退耕间隔期。目的:确定三种玉米杂交品种使用ACCase除草剂clethodim和haloxyfop-methyl后的安全回植期。方法:分别于播种前21、14、7、2、0 d分别喷洒除草剂,分别为192 g a.i. ha-1(杀虫灵)和120 g a.i. ha-1(氟甲氧基)。以具有草甘膦和草甘膦耐受性的KWS9110和2B587以及具有芳氧苯氧丙酸耐受性的Enlist 3个杂交品种进行个体试验。结果:甲基氟草磷对KWS9110和2B587的杀伤潜力大于杀虫灵。对于这些杂交种,主要在临近播种日期(7、2和0 DBS)施用氟氧磷时,观察到显著的林分和籽粒产量减少。结论:基于对玉米产量的影响,杂交品种KWS9110和2B587的安全回植期分别为8 d和11 d。对于杂交种,即使在0 DBS下施用氟乐磷,产量也没有下降。在任何施用时间内对杂交玉米产量均无影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Aryloxyphenoxypropionates tolerant and non-tolerant corn: plant-back interval after acetyl-coA-carboxylase inhibitors applications
Background: The application of Acetyl CoA carboxylase (ACCase) inhibitors prior to sowing of grass crops may result in crop damage due to residual effect of these herbicides in soil. The hypotheses was that different corn hybrids and ACCase herbicides can result in different plantback intervals after burndown treatments. Objective: This work was planned to determine safe plant-back periods for three corn hybrids where ACCase herbicides clethodim and haloxyfop-methyl are applied. Methods: Herbicides were sprayed at 21, 14, 7, 2 and 0 days before sowing (DBS) at 192 g a.i. ha-1 (clethodim) and 120 g a.i. ha-1 (haloxyfopmethyl). Individual experiments were carried out with three hybrids: KWS9110 and 2B587 with glyphosate and glufosinate tolerance and Enlist with aryloxyphenoxypropionate tolerance. Results: Haloxyfop-methyl resulted in higher damage potential compared to clethodim for the hybrids KWS9110 and 2B587. For these hybrids, significant crop stand and grain yield reductions were observed mainly when haloxyfop was applied closer to sowing date (7, 2 and 0 DBS). Conclusions: Based on the effects on corn grain yield, a safe plant-back period for haloxyfop was estimated to be 8 and 11 days for the hybrids KWS9110 and 2B587, respectively. For the Enlist corn hybrid, there were no yield decreases, even when haloxyfop was applied at 0 DBS. Clethodim did not affect corn yield of any hybrid in any application time.
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来源期刊
Planta Daninha
Planta Daninha Agricultural and Biological Sciences-Plant Science
自引率
0.00%
发文量
0
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.
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