Soil nitrogen. II.—Changes in levels of
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R. K. Cunningham; G. W. Cooke
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Article
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1958
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John Wiley and Sons
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English
⚖ 601 KB
## 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