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Fertilizer Nitrogen and Crop Rotation in Relation to Movement of Nitrate Nitrogen Through Soil Profiles
Author(s) -
Olsen R. J.,
Hensler R. F.,
Attoe O. J.,
Witzel S. A.,
Peterson L. A.
Publication year - 1970
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/sssaj1970.03615995003400030028x
Subject(s) - fertilizer , leaching (pedology) , agronomy , crop rotation , environmental science , nitrogen , cover crop , crop , rotation system , limiting , soil water , soil science , chemistry , agroforestry , biology , mechanical engineering , organic chemistry , engineering
Recovery of fertilizer N by three successive corn ( Zea mays L.) crops and as inorganic N in the soil profile following the last crop ranged from 72 to 88%. Total amount of NO 3 ‐N in the soil profiles was directly related to the rate of N application and to the frequency of corn in the rotation. More leaching of NO 3 ‐N generally occurred between fall and spring samplings than during the growing season. The most effective methods indicated for limiting the amounts of NO 3 ‐N passing through the soil profile to the water table include: limiting rates of N fertilizer to approximately that required by the crop, reducing the acreage and frequency of corn or other crops that received fertilizer N in the rotation, and maintaining a crop cover on the land as much of the time as is feasible.