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Full-Text Articles in Physical Sciences and Mathematics
Geology Of Northeastern Nebraska And Environs: Cedar, Dakota, And Dixon Counties In Nebraska, And Plymouth And Woodbury County In Iowa, Robert Matthew Joeckel, Dana Divine, P.R. Hanson, Leslie M. Howard
Geology Of Northeastern Nebraska And Environs: Cedar, Dakota, And Dixon Counties In Nebraska, And Plymouth And Woodbury County In Iowa, Robert Matthew Joeckel, Dana Divine, P.R. Hanson, Leslie M. Howard
Conservation and Survey Division
No abstract provided.
Sulfur Emerges As A Nutritional Issue In Iowa Alfalfa Production, John E. Sawyer, Brian J. Lang, Daniel W. Barker
Sulfur Emerges As A Nutritional Issue In Iowa Alfalfa Production, John E. Sawyer, Brian J. Lang, Daniel W. Barker
John E. Sawyer
Sulfur is often classified as a “secondary” essential element, mainly due to a smaller plant requirement, but also because it is less frequently applied as a fertilizer compared to N, P, and K. This has certainly been the case in Iowa, where research had not documented S deficiency or fertilization need for optimal crop production. However, if deficient, S can have a dramatic effect on plant growth and crop productivity – more than the classification “secondary” would imply.