Results of 75 years of continuous fertilization experiments in skierniewice as a contribution to modification of fertilization
| Autor: | S. Mercik, Wojciech Stępień, M. Gebski |
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| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Archives of Agronomy and Soil Science. 42:201-210 |
| ISSN: | 1476-3567 0365-0340 |
| DOI: | 10.1080/03650349709385728 |
| Popis: | Long‐term static experiments have been carried out since 1923 at the Experimental Field in Skierniewice, belongs to Warsaw Agricultural University. The soil of the Experimental Field belongs to the type of lessive of the very good ryeland complex. The content of silt and clay (particles < 0,02 mm) in particular genetic horizons is as follow: 15–17 % in Ap (0–25 cm), 10–12 % in Eet (25–45 cm) and 25 % in Bt and C (below 45 cm). Organic C content in the arable layer varies within 0,6–0,9 %. The precipitation is relatively low (520 mm) and its distribution ist rather unfavourable for cereals. Mean annual temperature amounts to 7,9 °C and average growth period is 215 days (air temperature above 5 °C). Farmyard manure lead, as compared to mineral fertilization to an increase of humus content, and available K. Humification coeffizient of C‐FYM is 6–8 %. To maintain for many years the pH values of soil at the level of 5,5–6,5, application of 1,6 t CaO/ha every 4 years is satisfactory. Much higher yield of plants... |
| Databáze: | OpenAIRE |
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