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Investigations of Tillage for Soil and Water Conservation I. A Comparison of Crop Yields for Contour vs. Up and Downslope Tillage
Author(s) -
Free George R.
Publication year - 1956
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/sssaj1956.03615995002000030035x
Subject(s) - tillage , loam , contouring , crop rotation , crop , mathematics , environmental science , agronomy , yield (engineering) , soil science , soil water , biology , computer science , materials science , computer graphics (images) , metallurgy
An experiment consisting of 6 sets of paired plots on a 10% slope of Honeoye silt loam in Central New York was started in 1942. Management factors such as fertilization, rotation, tillage, and crop have been the same for each pair. One plot of each pair, however, has been plowed and planted on the contour and the other up and downhill. Not only have crop yields differed significantly over the period 1942 through 1954 but the yield advantage in favor of contouring has been increasing. By 1954 the difference calculated from average regression amounted to 21.3%. Reasons for these cumulative benefits of contouring are discussed. The results of soil studies will be given in later papers of the series.