Spatial distribution and variability of soil agrochemical properties in Botevgrad valley

The paper deals with spatial analysis that evaluates the main agrochemical properties of the Botevgrad valley. The soil samples were taken along a pre-selected grid so as to cover the areas selected for research. The interpolation of the data was done according to geostatistical interpolation method and the output value is using Inverse Distance Weighting (IDW). Spatial distribution is a valuable tool for determining nutrient availability and nutrient management practices to optimize crop production and minimizing environmental impacts. As a general guideline, total nitrogen content in soil is commonly found in the range of 0.1% to 0.2% on a weight basis. Soils with higher organic matter content often have higher total nitrogen levels because organic matter is a significant source of nitrogen. It’s important to note that the optimal levels of available potassium and phosphorus can vary depending on the specific soil type.