Nitrogen and phosphorous in a loam soil of central Italy as affected by 6 years of different tillage systems
| Autor: | Papini, Rossella, Valboa, Giuseppe, Piovanelli, Carlo, Brandi, Giorgio |
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| Zdroj: | In Soil & Tillage Research 2007 92(1):175-180 |
| Databáze: | ScienceDirect |
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