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Isotopic and Nonisotopic Estimations of Fertilizer Nitrogen Uptake by Sudangrass in Field Experiments1

✍ Scribed by Westerman, R. L.; Kurtz, L. T.

Book ID
121517048
Publisher
The American Society of Agronomy
Year
1974
Tongue
English
Weight
112 KB
Volume
38
Category
Article
ISSN
0361-5995

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## Abstract Concentrations of nitrate‐ and ammonium‐N in both the surface (0–9 in.) and the subsoil (9–18 in.) of a heavy clay‐loam were determined at intervals both on uncropped soil and under rye‐grass. On uncropped land, high levels of nitrate were maintained through wet periods which caused per