Effect of glufosinate rate and addition of ammonium sulfate on annual weed control in glyphosate/glufosinate/2,4-D–resistant soybean

IF 1.3 3区农林科学 Q3 AGRONOMY

Weed Technology Pub Date : 2023-04-01 DOI:10.1017/wet.2023.22

Emily Duenk, N. Soltani, Robert T. Miller, D. Hooker, D. Robinson, P. Sikkema

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Abstract

Abstract The development of glufosinate-resistant soybean cultivars has created opportunities for use of glufosinate applied postemergence for weed control. Four field experiments were conducted in 2021 and 2022 to ascertain the effect of glufosinate rate and the addition of ammonium sulfate on annual weed control in glyphosate/glufosinate/2,4-D–resistant soybean. An increased glufosinate rate of 500 from 300 g ai ha–1 improved control of common ragweed, common lambsquarters, redroot pigweed, and foxtail species and resulted in decreased density and dry biomass of common lambsquarters and foxtail species. The addition of ammonium sulfate to glufosinate increased control of common lambsquarters, 2 and 8 wk after application (WAA), and of foxtail species, 2, 4, and 8 WAA, but did not improve control of common ragweed and redroot pigweed. Increasing the dose of glufosinate from 300 to 500 g ai ha–1 improves control of common ragweed, redroot pigweed, common lambsquarters, and foxtail species; however, the benefit of the addition of ammonium sulfate to glufosinate is weed species-specific. Nomenclature: Glyphosate; glufosinate; common ragweed; Ambrosia artemisiifolia L.; common lambsquarters; Chenopodium album L.; green foxtail; Seteria viridis (L.) P. Beauv.; velvetleaf; Abutilon theophrasti Medik.; soybean; Glycine max (L.) Merr.

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草膦酸盐用量和添加硫酸铵对草甘膦/草膦/2,4-D抗性大豆全年杂草控制的影响

摘要抗草膦大豆品种的开发为在羽化后应用草膦进行杂草控制创造了机会。2021年和2022年进行了四项田间试验，以确定草膦酸盐用量和添加硫酸铵对草甘膦/草膦/2,4-D抗性大豆年度杂草控制的影响。从300 g ai ha–1增加到500 g的草膦酸盐处理率改善了对普通豚草、普通羔羊草、复蹄猪草和狐尾草物种的控制，并导致普通羔羊草和狐尾草物种的密度和干生物量降低。硫酸铵在草膦中的添加增加了对施用后2周和8周普通羔羊（WAA）的控制，以及对2、4和8周狐尾种的控制，但没有改善对普通豚草和复根猪草的控制。将草膦的剂量从300 g ai ha增加到500 g ai ha–1，可以改善对普通豚草、复蹄猪草、普通小山羊和狐尾草的控制；然而，在草酸盐中添加硫酸铵的好处是杂草物种特有的。命名法：草甘膦；草膦；普通豚草；蒿属。；普通产羔器；藜。；绿狐尾；绿色Seteria viridis（L.）P.Beauv。；鹅绒叶；Medik。；大豆甘氨酸最大值。

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来源期刊

Weed Technology 农林科学-农艺学

CiteScore

2.90

自引率

21.40%

发文量

审稿时长

12-24 weeks

期刊介绍： Weed Technology publishes original research and scholarship in the form of peer-reviewed articles focused on understanding how weeds are managed. The journal focuses on: - Applied aspects concerning the management of weeds in agricultural systems - Herbicides used to manage undesired vegetation, weed biology and control - Weed/crop management systems - Reports of new weed problems -New technologies for weed management and special articles emphasizing technology transfer to improve weed control -Articles dealing with plant growth regulators and management of undesired plant growth may also be accepted, provided there is clear relevance to weed science technology, e.g., turfgrass or woody plant management along rights-of-way, vegetation management in forest, aquatic, or other non-crop situations. -Surveys, education, and extension topics related to weeds will also be considered