Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 March 1964
Published in Agron J 56:184-186 (1964)
© 1964 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Effect of Water Solubility and Granule Size of Phosphorus Fertilizers on Alfalfa Grown in a Calcareous Soil1

S. D. Romsdal and W. R. Schmehl2

Synopsis: Yield and P uptake were increased by increasing the water solubility or decreasing the granule size of the fertilizers. There was a water-solubility x granule-size interaction but solubility had little influence on yields with the 40-mesh or smaller materials. The effectiveness of fertilizers having 47% or more solubility tended to be independent of size. The influence of solubility on yield and P uptake was reduced with successive cuttings or by incubating the soil-fertilizer system before cropping.

1 Contribution from the Department of Agronomy, Colorado Agricultural Experiment Station, in Cooperation with the Division of Agricultural Development, Tennessee Valley Authority. Colorado Agr. Exp. Sta. Scientific Series No. 863.

2 Assistant Agronomist and Agronomist, Colorado State University.

Received for publication August 26, 1963.




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The SCI Journals Crop Science Vadose Zone Journal
Journal of Natural Resources
and Life Sciences Education		 Soil Science Society of America Journal
Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 1964 by the American Society of Agronomy.