| Autor: |
Nicoleta, Mărin, Felicia, Chețan, Marius, Bărdaș, Claudia, Preda |
| Předmět: |
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| Zdroj: |
Analele Universitatii din Craiova. Seria Biologie, Horticultura, Tehnologia Prelucrarii Produselor Agricole, Ingineria Mediului; 2020, Vol. 25, p98-105, 8p |
| Abstrakt: |
The paper presents the results obtained from the long-term experimental field placed at SCDA Turda, after 50 years nitrogen and phosphorus fertilization. Nitrogen from Nitrocalcar and phosphorus from superphosphate were applied at corn crops in 0, 40, 80, 120, and 160 kg/ha doses. Nitrogen fertilizers application ensured the highest yield gains and didn't generate statistically significant modifications of humus, nitrogen, and mobile phosphorus contents but soil mobile potassium level significantly decreased in the case of high nitrogen doses. Phosphorus fertilizers application ensured significant yield gains for corn grain and in higher doses (120 and 160 kg P/ha) significantly increased the soil phosphorus supply. Doses of phosphorus of up to 80 kg P/ha are maintenance doses that don't lead to soil mobile phosphorus supply adjustment. For high yields and phosphorus accumulation in soil doses must be at least 120 kg P/ha. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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