Profitability of foliar fungicides in double crop soybean under low-disease environments

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
J. Barro, E. D. Del Ponte, Heather M Kelly, Kaitlyn M. Bissonnette, Darcy. E. P. Telenko, K. Ames, Carl A. Bradley
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引用次数: 0

Abstract

Double-crop soybean production involves planting soybean (Glycine max) directly following winter wheat (Triticum aestivum) harvest. Frogeye leaf spot (FLS), caused by Cercospora sojina, is an important late-season foliar disease affecting soybean fields in the United States. In some instances, foliar fungicides have been used in double-crop soybean production with little to no FLS present, raising questions on the profitability of these applications. This study analyzed yield data from 25 fungicide trials across five states (Illinois, Indiana, Kentucky, Missouri, and Tennessee) conducted under low FLS pressure, from 2008 to 2021, on double-crop soybean. Fungicide classes evaluated in the trials included quinone outside inhibitors (QoI), demethylation inhibitors (DMI), and methyl benzimidazole carbamates (MBC) applied alone, and mixtures of chemistry classes that included DMI+succinate dehydrogenase inhibitor (SDHI), MBC+DMI, QoI+DMI, and QoI+DMI+SDHI. A network meta-analytic model estimated yield differences between fungicide-treated and nontreated plots, which ranged from -28 to 72 kg/ha among the fungicide treatments. Negative yield response values were estimated for the single fungicide classes MBC (-15.7 kg/ha) and QoI (-28.4 kg/ha). Yield difference as high as 72.8 kg/ha was estimated only for DMI+SDHI. Economic analyses indicated that, due to the lower yield responses, probabilities of breaking even were lower than 50% for all fungicide treatments, regardless of the fungicide cost or soybean sale price. Therefore, the low yield responses associated with foliar fungicides in low-disease environments linked to the higher risk of not offsetting the costs, suggest that growers should consider disease risk prior to making the fungicide application.
低病害环境下双季大豆叶面杀菌剂的盈利能力
双季大豆生产包括在冬小麦(Triticum aestivum)收获后直接种植大豆(Glycine max)。由 Cercospora sojina 引起的 Frogeye 叶斑病(FLS)是影响美国大豆田的一种重要的晚季叶面病害。在某些情况下,在双季大豆生产中使用叶面杀菌剂时,几乎不会出现 FLS,这就对使用这些杀菌剂的盈利能力提出了质疑。本研究分析了 2008 年至 2021 年期间,在 FLS 压力较低的情况下,在五个州(伊利诺伊州、印第安纳州、肯塔基州、密苏里州和田纳西州)对双季大豆进行的 25 项杀菌剂试验的产量数据。试验中评估的杀菌剂种类包括单独施用的醌外抑制剂(QoI)、脱甲基抑制剂(DMI)和甲基苯并咪唑氨基甲酸酯(MBC),以及包括 DMI+ 琥珀酸脱氢酶抑制剂(SDHI)、MBC+DMI、QoI+DMI 和 QoI+DMI+SDHI 在内的化学种类混合物。网络荟萃分析模型估算了杀菌剂处理地块与未处理地块之间的产量差异,各杀菌剂处理之间的差异从-28 千克/公顷到 72 千克/公顷不等。据估计,单一杀菌剂等级 MBC(-15.7 千克/公顷)和 QoI(-28.4 千克/公顷)的产量响应值为负值。据估计,只有 DMI+SDHI 的产量差异高达 72.8 千克/公顷。经济分析表明,由于产量反应较低,无论杀菌剂成本或大豆销售价格如何,所有杀菌剂处理的收支平衡概率都低于 50%。因此,在低病害环境中,叶面杀菌剂的低产量反应与无法抵消成本的高风险有关,这表明种植者在施用杀菌剂之前应考虑病害风险。
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
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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