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Residual Effects of Perennial Grass Sod on the Physical Properties of a Chernozem Soil
Author(s) -
Mazurak Andrew P.,
Ramig Robert E.
Publication year - 1963
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/sssaj1963.03615995002700050036x
Subject(s) - chernozem , perennial plant , plough , agronomy , growing season , nitrogen , residual , environmental science , fertilizer , chemistry , biology , soil water , mathematics , soil science , algorithm , organic chemistry
Residual effects of perennial grass sod on a Chernozem soil were studied in two experiments. In the first experiment, two cool‐season grasses were in sod for 2, 4, 6, and 8 years in the second 10‐year cycle of a 20‐year study. Sod was plowed and then cropped to a fallow‐wheat sequence for 4 years. In the second experiment, seven cool‐season and four warm‐season grasses were in sod for 7 years. Sod was plowed and then cropped to a fallow‐wheat sequence for 6 years. In both experiments the plots were split or paired and one‐half of each plot or one of each pair of plots received nitrogen fertilizer. In the first experiment the residual effects of grasses on the rates of water entry into soil and on the water stability of aggregates were evident 4 years after plowing sod. The degree of residual effect increased as the years in sod prior to plowing increased. Residual effect of grasses augmented the yields of wheat. Similarly in the second experiment, favorable effects of cool‐ and warm‐season grasses were noted on the rate of water entry into soil.