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Synopsis: Subsoiling to 18 inches with and without deep placement of lime, phosphorus, and potassium on a Collington sandy loam soil did not produce significant yield increases of cabbage, tomatoes, and sweet corn over a 7-year period even in dry years. Residual effects of subsoiling significantly increased water movement into this soil 3 years after the last deep tillage operation.
2 Agricultural Engineer, USDA; Professors, Soils and Crops Department, Rutgers—The State University, New Brunswick, New Jersey, respectively.
Received for publication August 8, 1964.
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