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Details van artikel 122 van 183 gevonden artikelen
| Titel: |
Nitrogen availability to corn in soils previously amended with organic wastes |
| Auteur: |
Ruby, T. P. Griffin, G. F. |
| Verschenen in: |
Communications in soil science and plant analysis |
| Paginering: | Jaargang 16 (1985) nr. 6 pagina's 569-581 |
| Jaar: |
1985-06 |
| Inhoud: |
The availability of N to corn (Zea Mays L.) in soils previously amended with organic wastes was estimated by a number of chemical soil tests in 1982 and 1983. Availability indexes were correlated with yield and N uptake by the crop. Total soil N and June mineral N (N extracted by 2N KC1 from soil samples obtained when corn was 20 to 30 cm tall) proved to be good predictors of yield and N uptake for combined 1982 and 1983 data. Soil organic matter content and absorption of U.V. (260 nm) light by .01 M NaHCO3 and NH4OAc (pH 4.8) soil extracts were not well enough correlated with yield or N uptake to be useful in a soil testing program. Various combinations of log transformations of June mineral N, preplant mineral N, and Ap horizon depth proved to be good indexes of N availability and in some cases explained a significantly greater percentage of the variability in yield and N uptake than single-variable indexes. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 122 van 183 gevonden artikelen
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