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Ultima descărcare din IBN: 2023-10-22 17:10 |
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631.45 (115) |
Почвоведение. Почвенные исследования (720) |
SM ISO690:2012 BOZGAN, Iana. Impactul diferitor sisteme de fertilizare asupra conţinutului azotului total, proteic şi neproteic al plantelor cultivate în
asolament pe cernoziom tipic
. In: Ştiinţa Agricolă, 2013, nr. 2, pp. 21-24. ISSN 1857-0003. |
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Ştiinţa Agricolă | ||||||
Numărul 2 / 2013 / ISSN 1857-0003 /ISSNe 2587-3202 | ||||||
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CZU: 631.45 | ||||||
Pag. 21-24 | ||||||
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Rezumat | ||||||
The aim of our researches was to compare the impact of two fertilization systems on the concentration of total, protein and nonprotein nitrogen in plants. The researches were performed based on a long-term experiment established on a plot (typical chernozem) with six-field rotation. Three crops were selected for study: corn for grain (Zea mays L.), sugar beet (Beta vulgaris) and winter wheat (Triticum durum). Since 1991, the following
fertilization systems were used on this land: 1)mixed use of mineral and organic fertilizers (NPK 75, 130, 175 kg/ha and farmyard manure 10 and 15 t/ha); organic fertilizers (manure) - 15 t/ha; 3) control variant - without fertilizers. The following chemical parameters of plants were studied: total nitrogen and non-protein nitrogen which were determined by photometric indophenol method and also protein nitrogen which was determined by the difference between total nitrogen and non-protein nitrogen. It was found that sugar beet and winter wheat recorded
significantly higher values for these indices as a result of mineral and organic fertilizers administration, while in the case of corn as a result of manure use. |
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Cuvinte-cheie Asolament, cernoziom, Fertilizare, azot total, Zea mays, Beta vulgaris, Triticum durum, Azot proteic, Azot neproteic |
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