Applications of potassium chloride at the rate of 100, 200 and 500 pounds per acre were made on two soils containing a high calcium content. Oat straw at the rate of 2 tons of dry matter per acre was applied alone and in combination with potassium chloride. Sweet clover at the rate of 2 tons of dry matter per acre was applied alone and in combination with potassium chloride. Samples of the soils were taken 4 weeks after treatment in the greenhouse and again after 5 months for nitrification determinations.
Proceedings of the Iowa Academy of Science
©1933 Iowa Academy of Science, Inc.
Smith, F. B. and Dean, Hartzell C.
"Some Effects of Fertilization on Nitrification in High-Lime Soils,"
Proceedings of the Iowa Academy of Science, 40(1), 85-85.
Available at: https://scholarworks.uni.edu/pias/vol40/iss1/30