The effect of stubble on 15N fertilizer nitrogen balance and immobilization in a vertisol during the summer fallow
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ArticleLanguage: En Publication details: 1984Subject(s):
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Reviews in Rural Science no. 5, p. 218-220615181Summary: A field experiment was designed to determine the effect of wheat stubble on the transformations and balance of fertilizer nitrogen applied to a vertisol (Norillee series) early in the summer fallow. 15N-labelled ammonium sulphate andcalcium nitrate were applied at a rate equivalent to 100 kg N ha-1 to the surface 10 cm of soil in confined microplots on 5 February 1978. Stubble was incorporated at rates equivalent to 0, 4 and 32 t ha-1. The cores were removed from the field 15 weeks later, the soil was sampled to 120 cm and anayses for total N, mineral N and 15N were performed. Results indicated that an initial application of stubble reduced the total 15N
| Item type | Current library | Collection | Call number | Copy number | Status | Date due | Barcode | Item holds | |
|---|---|---|---|---|---|---|---|---|---|
| Article | CIMMYT Knowledge Center: John Woolston Library | Reprints Collection | REP-3320 (Browse shelf(Opens below)) | 1 | Available | 615181 |
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A field experiment was designed to determine the effect of wheat stubble on the transformations and balance of fertilizer nitrogen applied to a vertisol (Norillee series) early in the summer fallow. 15N-labelled ammonium sulphate andcalcium nitrate were applied at a rate equivalent to 100 kg N ha-1 to the surface 10 cm of soil in confined microplots on 5 February 1978. Stubble was incorporated at rates equivalent to 0, 4 and 32 t ha-1. The cores were removed from the field 15 weeks later, the soil was sampled to 120 cm and anayses for total N, mineral N and 15N were performed. Results indicated that an initial application of stubble reduced the total 15N
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