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 SM ISO690:2012LEAH, Nicolai, PANU, Vera, SAVIN, Elena. Productivitatea culturilor de câmp în funcţie de nivelul de fertilizare a cernoziomului levigat în experienţe staţionare de lungă durată. In: Ştiinţa în Nordul Republicii Moldova: realizări, probleme, perspective, 29-30 iunie 2021, Bălți. Balti, Republic of Moldova: F.E.-P. „Tipografia Centrală, 2021, Ediția 5, pp. 122-128. ISBN 978-9975-62-432-9. |
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| Ştiinţa în Nordul Republicii Moldova: realizări, probleme, perspective Ediția 5, 2021 |
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Conferința "Ştiinţa în Nordul Republicii Moldova: realizări, probleme, perspective" Bălți, Moldova, 29-30 iunie 2021 | ||||||
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The evaluation results of the winter wheat, corn for grain and sunflower productivity cultivated on the chernozem leached according to the fertilization level and agro-meteorological conditions of 2011-2020 yrs are presented. The mineral fertilizers administration on the natural background on average for 10 years led to the increase of the production of autumn wheat by 39-103%, corn for grains by 26-56% and sunflower by 18-71%. Phosphorus fertilization levels from 1.5 mg to 4.5 mg/100 g of mobile phosphorus soil led to an increase in wheat yields by 27-64%, grain corn by 11-26% compared to the N120K30 mg/100 soil background and 18-52% sunflower compared to N45K30 mg/100 soil. Systematic application of phosphorus fertilizers on the natural background with optimal maintenance at the level of 3.5 mg mobile phosphorus without nitrogen fertilization, variant P3.5K30 mg/100 (PK), led to an increase in wheat yields by 36%, corn - 26% and sunflower - 38%. The application of nitrogen fertilizers in doses of 30-150 kg/ha on the background of PK phosphorus to the cultivation of winter wheat and corn for grain brought an increase in production of 27-67%. The increase of sunflower seed production on the background of PK when applying nitrogen in doses of 30-90 kg/ha was 15-32%. The optimal level of mobile phosphorus in the chernozem leached at the cultivation of field crops was 3.0-3.5 mg/100 g of soil (Machigin method), and the optimal doses of nitrogen consist: 90-120 kg/ha for wheat and corn, and 45- 60 kg/ha for sunflower. |
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| Cuvinte-cheie chernozem leached, fertilization level, winter wheat, Maize, sunflower, Productivity |
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