AGROCHEMICAL EVALUATION OF SOILS UNDER HORTICULTURE ON THE SUITABILITY OF THEIR USAGE FOR THE MAIN AGRICULTURAL CROPS GROWING
Razanov Serhii – Doctor of Agricultural Sciences, Professor of the Department of Ecology and Environmental Protection, Faculty of Agronomy and Forestry, Vinnytsia National Agrarian University (21008, Vinnytsia, Sonyachna str. 3; e-mail: razanov@ email@example.com).
Melnyk Viktoriia – postgraduate Vinnytsia National Agrarian University (21008, Vinnytsia, Sonyachna str. 3; e-mail: firstname.lastname@example.org)
This article reveals the results of research on the agrochemical composition of soils released from horticulture (Apple orchard) for the effectiveness of their usage in growing crops in field crop rotation. The research was conducted on Gray forest soils in the central part of Vinnytsia region in the forest-steppe of the Right Bank. The subject of research is agro-ecological indicators of soils that have been released from horticulture of varying degrees of intensity. It was found that in soils used for intensive horticulture nitrogen content of easily hydrolyzed, exchangeable potassium and humus was lower on 37.1, 23.7, 2.9 %, and mobile phosphorus, soil pH, metabolic calcium and metabolic magnesium on the contrary higher on 71.8, 12.8, 19.8 and 8.0 %, respectively, compared to the soils used for extensive horticulture. There is also a certain difference between mobile compounds of chemical metals in the soils under horticulture. The content of boron, molybdenum, cobalt and iron in the soils used for intensive horticulture was lower on 50.0, 32.8, 2.5 and 62.5 % compared to the soils of extensive horticultural lands. The concentration of sulfur was 8.0 % higher in intensive horticultural soils compared to the extensive ones. Characterizing the content of heavy metals-toxicants in soils used for intensive horticulture, it should be noted that the content of cadmium, lead, copper and mercury was higher on 4.0, 6.1, 9.5 and 6.6 %, and zinc is twice lower compared to the soils in extensive horticulture. Analysis of soils released from horticulture of varying degrees of intensity showed that the content of basic plant nutrients needs to be replenished, taking into account the growing need for basic nutrients in soils from phosphorus, potassium to nitrogen. When converting soils used for horticulture into arable land, it is necessary to take into account the measures that maximize the accumulation of soil nitrogen, in particular the cultivation of legumes. On these soils, it is not advisable to immediately grow nitrogen-loving crops, such as corn, winter wheat and sunflower, in the cultivation of which a high amount of this element is removed from the soil to form an optimal harvest. The practical significance of the results is that they will enable them to develop concrete proposals for reducing soil contamination by restoring soil fertility and improving the quality of plant material from cereals grown under exempted horticulture conditions.
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Scientific journal "AGRICULTURE AND FORESTRY" was founded in 1995; it was entitled as Bulletin of Vinnytsya State Agricultural Institute.
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According to the order of the Ministry of Education and Science of Ukraine from 17.03.2020 № 409. Journal of Agriculture and Forestry is included in the List of scientific professional publications of Ukraine Category "B" in agricultural sciences (specialties) - 101, 201, 202, 203, 205, 206.