Results of an experiment at Rothamsted testing farmyard manure and N, P and K fertilizers on five arable crops I. Yields.
| Autor: | Widdowson, F. V., Penny, A., Cooke, G. W. |
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| Zdroj: | Journal of Agricultural Science; Jun1963, Vol. 60 Issue 3, p347-352, 6p |
| Databáze: | Complementary Index |
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