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NTIS 바로가기Soil Science Society of America journal, v.49 no.2, 1985년, pp.422 - 427
Sene, M. , Vepraskas, M. J. , Naderman, G. C. , Denton, H. P.
Tillage-pans occur in many soils of the southeastern United States and usually decrease crop yields. Relative yield increases from subsoiling (deep tillage) as compared to a nonsubsoiled treatment have been variable among soils due to differences in soil properties. The primary objective of this investigation was to relate soil physical properties to relative yield increases of corn (Zea mays L. ) due to subsoiling. Corn yields were measured for subsoiled and nonsubsoiled (disked twice) treatments during 1978, 1979, and 1980 at 12 locations in the North Carolina Coastal Plain region. Soil physical properties of the Ap and E or B horizons were characterized for each site, and included air-filled porosity, cone index, saturated hydraulic conductivity, bulk density, ped mean weight-diameter, and texture.
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