Assessment of cover crop adoption and impact on weed management in Wisconsin corn-soybean cropping systems

IF 1.3 Q3 AGRONOMY
Guilherme Chudzik, Jose J. Nunes, Nicholas J. Arneson, Grace Arneson, Shawn P. Conley, Rodrigo Werle
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Abstract

The evolution and widespread occurrence of herbicide-resistant weeds pose a major challenge for farmers and crop consultants across North America, warranting integrated management strategies. The adoption of cover crops offer weed suppression and soil health benefits but adds management complexity. A survey, targeting farmers and crop consultants, was conducted during the spring of 2023 to evaluate current cover crop management practices and perceptions in Wisconsin cropping systems. The survey included 26 questions across five sections: respondent profile, cover crop adoption and experience, cover crop management ahead of soybean [Glycine max (L.) Merr.], cover crop management ahead of corn (Zea mays L.), and general benefits and challenges of cover crop adoption. Farmers and crop consultants represented most respondents, influencing a total of 29,500 and 557,000 ha, respectively. Waterhemp (Amaranthus tuberculatus [Moq.] J.D. Sauer) and giant ragweed (Ambrosia trifida L.) were identified as the most troublesome weeds. Over 90% of respondents use herbicides to terminate their cover crops, and 68% of respondents agree that cover crops improved overall weed control in their farms/clients’ farms to some extent [cereal rye (Secale cereale L.) as main cover crop species]. Additionally, results demonstrate a strong consensus (85%) on cover crops positively influencing water retention, with 98% agreement on their efficacy in reducing soil erosion. Results from this survey can help guide farmers, agronomists, researchers, and policymakers with cover crop adoption, management, policies, incentives, and future research and education needs in Wisconsin and beyond to support the development of more sustainable and efficient weed and crop management strategies.

评估威斯康星州玉米-大豆种植系统采用覆盖作物的情况及其对杂草管理的影响
抗除草剂杂草的演变和广泛出现给北美地区的农民和作物顾问带来了重大挑战,需要采取综合管理策略。采用覆盖作物具有抑制杂草和有益土壤健康的作用,但也增加了管理的复杂性。2023 年春季开展了一项针对农民和作物顾问的调查,以评估威斯康星种植系统中当前的覆盖作物管理实践和看法。调查包括五个部分的 26 个问题:受访者概况、采用覆盖作物的情况和经验、大豆(Glycine max (L.) Merr.)前的覆盖作物管理、玉米(Zea mays L.)前的覆盖作物管理以及采用覆盖作物的一般益处和挑战。受访者中以农民和作物顾问居多,分别影响了 29,500 公顷和 557,000 公顷的土地。水蕹(Amaranthus tuberculatus [Moq.] J.D. Sauer)和大豚草(Ambrosia trifida L.)被认为是最棘手的杂草。超过 90% 的受访者使用除草剂终止覆盖作物,68% 的受访者认为覆盖作物在一定程度上改善了其农场/客户农场的总体杂草控制情况[主要覆盖作物种类为黑麦(Secale cereale L.)]。此外,调查结果表明,85% 的人一致认为覆盖作物对保水有积极影响,98% 的人认为覆盖作物能有效减少土壤侵蚀。这项调查的结果有助于指导威斯康星州及其他地区的农民、农学家、研究人员和政策制定者采用覆盖作物、进行管理、制定政策、激励措施以及满足未来的研究和教育需求,从而支持制定更可持续、更高效的杂草和作物管理策略。
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来源期刊
Agrosystems, Geosciences & Environment
Agrosystems, Geosciences & Environment Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
2.60
自引率
0.00%
发文量
80
审稿时长
24 weeks
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