Optimizing liquid‐applied iron sulfate rate and application interval for dollar spot suppression on golf course fairways

IF 2 3区 农林科学 Q2 AGRONOMY Crop Science Pub Date : 2024-11-07 DOI:10.1002/csc2.21407
D. J. Soldat, K. Hockemeyer, D. S. McCall, C. M. Straw, P. L. Koch
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Abstract

Iron sulfate applications reduce dollar spot severity on golf course turfgrass, but further optimizing the use of iron sulfate may increase efficacy and encourage more widespread adoption by golf course superintendents. Three iron sulfate rates (9, 18, 36 kg ha−1), two application intervals (7 and 14 days), three water volumes (306, 612, and 1223 L ha−1), and combinations with fertilizer and fungicide products were evaluated at field locations in Madison, WI, Bloomington, MN, and Blacksburg, VA, in 2018 and 2019. Iron sulfate rate decreased dollar spot at all locations in a dose‐dependent manner, and 7‐day applications were more efficacious than 14‐day applications. Water volume had no impact on disease severity at any location and combining iron sulfate with fertilizer had minimal impact as well. These results demonstrate improved iron sulfate strategies for dollar spot management and can be implemented by golf course superintendents in areas where fungicide resistance and fungicide regulations limit the use of traditional fungicides.
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优化液态硫酸铁的施用量和施用间隔,抑制高尔夫球场球道上的黑斑病
施用硫酸铁可减轻高尔夫球场草坪上美元斑的严重程度,但进一步优化硫酸铁的使用可提高功效,并鼓励高尔夫球场管理者更广泛地采用硫酸铁。2018 年和 2019 年,在威斯康星州麦迪逊、明尼苏达州布卢明顿和弗吉尼亚州布莱克斯堡的实地地点,对三种硫酸铁用量(9、18、36 千克/公顷-1)、两种施用间隔(7 天和 14 天)、三种水量(306、612 和 1223 升/公顷-1)以及与肥料和杀菌剂产品的组合进行了评估。在所有地点,硫酸铁的施用量都能以剂量依赖的方式减少美元斑,7 天的施用量比 14 天的施用量更有效。水量对任何地点的病害严重程度都没有影响,将硫酸铁与肥料结合使用的影响也微乎其微。这些结果表明,硫酸铁对美元斑的管理策略有所改进,在杀菌剂抗药性和杀菌剂法规限制使用传统杀菌剂的地区,高尔夫球场管理者可以采用这些策略。
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来源期刊
Crop Science
Crop Science 农林科学-农艺学
CiteScore
4.50
自引率
8.70%
发文量
197
审稿时长
3 months
期刊介绍: Articles in Crop Science are of interest to researchers, policy makers, educators, and practitioners. The scope of articles in Crop Science includes crop breeding and genetics; crop physiology and metabolism; crop ecology, production, and management; seed physiology, production, and technology; turfgrass science; forage and grazing land ecology and management; genomics, molecular genetics, and biotechnology; germplasm collections and their use; and biomedical, health beneficial, and nutritionally enhanced plants. Crop Science publishes thematic collections of articles across its scope and includes topical Review and Interpretation, and Perspectives articles.
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