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Crop Rotations and Soil Nitrogen
Author(s) -
Haynes J. L.,
Thatcher L. E.
Publication year - 1955
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/sssaj1955.03615995001900030019x
Subject(s) - loam , crop rotation , agronomy , cropping , environmental science , yield (engineering) , productivity , nitrogen , crop yield , silt , crop , soil water , mathematics , soil science , geography , geology , agriculture , chemistry , biology , economics , paleontology , materials science , macroeconomics , archaeology , organic chemistry , metallurgy
Evidence from a 39‐year record of corn yield from trop rotation experiments on Wooster silt loam soil fails to show long‐term cumulative trend effects of commonly‐used corn belt rotations on soil productivity. Yield levels characteristic of a given rotation were quickly reached with no pronounced trends thereafter. In general, yield level was associated with soil nitrogen level. Long‐term downward trends in apparent soil productivity level were observed under conditions of continuous cropping to corn and under conditions of severe erosion.