How Raised Beds and Fe-Chelate Affect Soybean Iron Deficiency Chlorosis and Yield
How Raised Beds and Fe-Chelate Affect Soybean Iron Deficiency Chlorosis and Yield作者机构：Department of Plant Sciences North Dakota State University Fargo ND USA WestBred Bayer Crop Science Fargo North Dakota USA
出 版 物：《Agricultural Sciences》 (农业科学（英文）)
年 卷 期：2021年第12卷第7期
页 面：755-768页
学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学]
主 题：Soybean Raised Beds Iron Deficiency Chlorosis Fe-Chelate
摘 要：Water-logging and the inability to take up sufficient iron (Fe), causing iron deficiency chlorosis (IDC) in soybean (Glycine max, L. Merr.), can be major yield reducing factors in certain soils in the northern USA and Manitoba, Canada, soybean growing regions. The objective of this research was to evaluate soybean IDC, biomass production, and yield with seeding on raised beds and seed application of the Fe-chelate compound ortho-ortho-Fe-EDDHA. In six environments, soybean were seeded on raised beds and conventionally prepared seedbeds (flat) and with a factorial arrangement of five cultivars (within adapted maturity group 0.1 to 0.9 and variable IDC tolerance) and seed applied Fe-EDDHA using rates of 0 kg·ha−1 and 3.36 kg·ha−1. There were no significant interactions between the factors tested. The plant population was 27% higher on the raised beds compared with flat, and yield was 6.3% higher (2893 kg·ha−1 vs. 2722 kg·ha−1). Total dry plant biomass on raised beds was 9.8% greater compared with flat. The plant population with seed applied Fe-EDDHA was 10.6% lower compared with no application. However, the IDC score was significantly lower 2.2 vs 2.4 (1 = green, 5 = dead) for Fe-EDDHA seed application. Yield and plant biomass we
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