Uman NUH | today: 10/21/2024
| Author(s) |
Nedvyha N.V., Candidate of Agricultural Science, , Uman National University of Horticulture, Ukraine Halasun Yu.P., Candidate of Agricultural Science, , Uman National University of Horticulture, Ukraine |
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| Category | The Agronomy | ||
| year | 2013 | issue | Issue #82 |
| pages | 153-159 | index UDK | 631.434 | DOI |
| Abstract | In the long-term (since 1964) permanent field experiment of the Department of Agrochemistry and Soil Science of Uman National University of Horticulture the influence of mineral, organic and organo-mineral fertilizer systems on the formation of microstructure of the podzolized black soil has been researched with the help of different methods. The fertilizers were applied on three levels: single rate of mineral fertilizers — N45P45K45, organic — 4,5t/ha of manure and organo-mineral-of manure 4,5t/ha + N22P34K18. The research was carried out in the field rotation link: peas - winter wheat - silage maize with the application of mineral system N10P10K10, N30P30K30, N60P60K60 under peas; under winter wheat respectively N45P45K45, N90P90K90, N200P200K200, manure was applied under sugar beets which were peas predecessor and under silage maize respectively 40,45 and 60 t/ha. Mineral fertilizers reduce the coefficients of soil pedality and micro-aggregation as well as the granulometric index of soil pedality but the aggregation level even at the triple rate of solid mineral fertilizers remains within the non-significant difference. Organic fertilizers facilitate the essential improvement of soil aggregation. Organic-mineral fertilizer systems, especially in their triple combination, are not worse than organic systems in terms of their positive effect on the black soil aggregation. | ||
| Key words | fertilizer systems, podzolized black soil, aggregation, micro-aggregation coefficient, dispersion coefficient, aggregation degree. | ||