Results of an experiment at Rothamsted testing farmyard manure and N, P and K fertilizers on five arable crops and permanent grass III. Yields 1961–1965.
| Autor: | Widdowson, F. V., Penny, A. |
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| Zdroj: | Journal of Agricultural Science; Feb1968, Vol. 70 Issue 1, p53-58, 6p |
| Databáze: | Complementary Index |
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