Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 1 April 1960
Published in Agron J 52:185-189 (1960)
© 1960 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Effect of Subsoiling and Deep Fertilizer Placement on Yields of Corn in Iowa and Illinois1

W. E. Larson, W. G. Lovely, J. T. Pesek and R. E. Burwell2

Synopsis: Subsoiling to 16 and 24 inches depth did not increase corn yields in Iowa during 1955, 1956, and 1957. In Illinois, Subsoiling to 12 and 18 inches depth produced a significant corn yield response at the lower depth in only 2 out of 14 experiments in 1955 and 1956. Fertilizer placed deep in the subsoiled channel was not as effective as fertilizer plowed under in the Iowa experiments.

1 Contribution from the Eastern Soil and Water Management Research Branch, SWCRD, and the Crop Production Engineering Research Branch, AERD, ARS, USDA; the Iowa Agricultural and Home Economics Experiment Station; and the Illinois Agricultural Experiment Station cooperating. Journal Paper No. J-3687 of the Iowa Agr. and Home Econ. Exp. Sta., Ames, Iowa. Project 787. Presented before Division VI, Soil Science Society of America, Lafayette, Ind., August 7, 1958.

2 Soil Scientist, Agricultural Research Service; Agricultural Engineer, Agricultural Research Service; Professor of Soils, Iowa State University; and Soil Scientist, Agricultural Research Service; respectively.

Received for publication July 23, 1959.




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Environmental Quality		 The Plant Genome
Copyright © 1960 by the American Society of Agronomy.