Agronomy blog · June 1, 2025
Manganese Deficiency in Soybeans
Recognizing manganese deficiency in soybeans, why high-pH soils raise risk, and how growers evaluate foliar and soil options.
What manganese shortage looks like
Manganese deficiency in soybeans often appears as interveinal chlorosis on younger leaves, with veins staying greener. High-pH soils, certain sandy grounds, and cool conditions can increase risk.
Glyphosate programs and other stresses sometimes get tangled into manganese conversations—use tissue tests to separate myth from measurement.
Correcting without overcorrecting
Foliar manganese can be a timely tool when deficiency is confirmed and canopy can still intercept spray. Soil strategies matter on fields with chronic issues. Follow label rates carefully.
Watch tank-mix compatibility—micronutrients can complicate herbicide loads if order and water quality are ignored.
Scout, test, then act
Map problem areas instead of blanketing the whole farm on day one. Roush Ag Solutions can help you review micronutrient options for soybean manganese questions and quote products for your acres.
Always verify rates, crops, tank-mix partners, and restrictions on the product label and SDS before you spray. This article is educational guidance for Midwest farmers—not a substitute for label directions or local agronomic advice.