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Stratified Profiles: Characteristics of Simulated Soils in a Beef Cattle Feedlot
Author(s) -
Norstadt Fred A.,
Duke Harold R.
Publication year - 1982
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/sssaj1982.03615995004600040032x
Subject(s) - feedlot , loam , lysimeter , soil water , environmental science , manure , agronomy , sawdust , zoology , organic matter , soil science , chemistry , biology , organic chemistry
Profile combinations of clay loam, sand, clay loam over sand, and sand over clay loam were used to study salt movement and mineral nitrogen (N) transformations in a beef cattle feedlot. These soils were placed in lysimeters located in a feedlot stocked at the rate of one animal, weighing 270 to 450 kg, per 15.2 m 2 . The feedlot was bedded with sawdust and stocked continuously. After the lysimeters were in use 4 years, cores were removed for physical and chemical analyses. Each profile combination affected salt movement and mineral N transformations differently. Sand over clay loam was the superior combination to retard nitrate‐N (NO 3 ‐ ‐N) movement and retain salt. In this configuration organic matter apparently moved from the manure pack through the sand along with NO 3 ‐ ‐N and may have enhanced denitrification in the clay loam layer. The effect of location within the feedlot and depth increment within a given soil fill and their interaction were not important variables influencing profile chemical characteristics.