YIELD AND QUALITY OF CALVILLE SNOW APPLE TREE VARIETY UNDER DIFFERENT FERTILIZATION IN THE REPEATEDLY CULTIVATED PLANTATIONS
The results of long-term research on the formation of yield and quality of apple trees of Calville Snow variety on the seedling rootstocks under repeated cultivation on the mineral nutrient backgrounds created by long-term fertilization (during 50 years) of the previous garden on the dark gray podzo...
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| Format: | Article |
| Language: | English |
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Uman National University of Horticulture
2019-01-01
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| Series: | Вісник Уманського національного університету садівництва |
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| Online Access: | http://visnyk-unaus.udau.edu.ua/assets/files/articles/2019/1/23.pdf |
| Summary: | The results of long-term research on the formation of yield and quality of apple trees of Calville Snow variety on the seedling rootstocks under repeated cultivation on the mineral nutrient backgrounds created by long-term fertilization (during 50 years) of the previous garden on the dark gray podzolized soil in the Right-bank Forest-Steppe of Ukraine are considered. During the whole period of cultivation the first and second generation of apple trees in the experimental garden, the organic fertilizer (40 t/ha of cattle manure), mineral fertilizer (N120P120K120) and their combination (20 t/ha of manure + N60P60K60) were used and applied in the old plantation biennially in autumn under the plowing in the row spacing of 18-20 cm, and in the new repeated plantation the manure, phosphate and potash fertilizers were used in the same way and the nitrogen ones – with half doses annually in spring under cultivation to a depth of 10-12 cm. As a result of the research it was found that organic fertilizers provided better formation of soil fertility indices than mineral fertilizers (the content of humus and moving nutrients, the soil environment reaction, biological activity of soil) and correspondingly the yield of the trees increased – for all the years of fruiting, the total fruit yield under organic fertilization was greater than the control one without fertilization by 35%, and under the organic and mineral and mineral one – by 27 and 18%. The average weight of apples was higher on the fertilized trees, and qualitative indices did not differ significantly |
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| ISSN: | 2310-046X 2310-0478 |