Crop farmers in northwestern Iowa know there are benefits of applying ag lime to acidic soils. But, until recently, little data existed that told them how effective ag lime is in correcting surface soil acidity in the dominant upland soils in northwestern Iowa. Now, research in northwestern Iowa suggests that ag lime application when surface pH is low can benefit soybean yields in different tillage systems, including in no-till.
Iowa State University
Kassel, Paul C. and Tidman, Michael J., "Ag lime impact on yield in several tillage systems" (1999). Integrated Crop Management News. 2128.
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