RESULTS OF AGROCHEMICAL ASSESSMENT OF DARK GREY PODZOLIZED CLAYEY SOILS OF VINNYTSIA NATURAL AND AGRICULTURAL REGION (BASED ON THE EXAMPLE OF THE EXPERIMENTAL FIELD № 27 OF PJSC “DASHKIVTSI”)

Abstract

The issues of studying and assessing the agrochemical properties of arable land remain relevant, which helps to identify problem areas with a lack of nutrients and to apply fertilizers effectively (by point) with maximum efficiency. In turn, this helps to improve land fertility, reduce technological passes across the field, and thus preserve the physical and mechanical properties of soils and save resources. The aim of the study is to investigate the agrochemical properties of dark grey podzolized gley soils in the Vinnytsia natural and agricultural region, also to analyze the spatial distribution and changes in agrochemical parameters within the experimental field No. 27. Field studies of soil cover and laboratory analyses of soils agrochemical properties were carried out. The article analyses the agrochemical properties of dark grey podzolized gley soils within the boundaries of PJSC “Dashkivtsi”. The geospatial distribution of certain elements in the soils of the experimental field was shown using the Ag Leader Technology SMS Basic software. The analysis of the cartograms showed the areas with the lowest pH values of 5,4–5,8, which are located in the northern part of the field, where elements should be applied to reduce acidity. The organic matter content in the soil samples ranged from 1,57 to 4,22%, and the average humus value was 2,59%. In general, the soils under study are poorly supplied with humus. The areas with the lowest Potassium content are located in the northern part of the field and require potassium fertilization. The areas with the lowest Phosphorus content are located in the central and northern parts of the field and require the addition of phosphorus fertilizers. The areas with the lowest Nitrogen content are located in the central and south-western parts of the field and require nitrogen fertilizer. Areas with the lowest Sulphur content are located in the central and north-western parts of the field and require the highest fertilizer application. The studied dark grey podzolized gley soils of the in the Vinnytsia natural and agricultural region are fertile and, under conditions of rational use, are suitable for growing both grain and industrial crops. It has been established that the soils of the experimental field require the use of “precision farming” technologies to improve the agrochemical composition by introducing the required amount number of elements to improve soil properties and increase their fertility.