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Comparative Effects of Plowing and Other Methods of Seedbed Preparation on Nutrient Element Deficiencies in Corn
Author(s) -
Bower C. A.,
Browning G. M.,
Norton R. A.
Publication year - 1945
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1945.036159950009000c0022x
Subject(s) - seedbed , plough , citation , library science , agricultural engineering , agricultural science , computer science , agronomy , environmental science , sowing , engineering , biology
FIELD EXPERIMENTS designed to compare plowing with other methods of seedbed preparation for corn production have been in progress in Iowa since 1939. The results of various experiments which include comparisons of plowing with listing, disking, and subsurface tillage have been summarized by Norton, et al. (5) and by Browning, et al. (i, 2). Altho the use of such> tillage methods as listing, disking, and subsurface tillage has resulted in lower seedbed preparation costs and in smaller soil and water losses on sloping land when compared with plowing, corn yields on plots where the seedbed was prepared by these methods has been in many cases markedly lower than on plots where the soil was plowed. Observations on the appearance of plants in the variously tilled plots during the growing 'season have indicated that the lower yields obtained where the soil was not plowed were due largely to nutrient element deficiencies. The purpose of this investigation, was to study the effects of various methods of seedbed preparation on N and K deficiency in corn. This was accomplished by means of chemical analyses made on plant and soil samples taken during the growing season from variously tilled plots.