The changes under the influence of irrigation and fertilization systems of the fractional potassium composition of the soils in the Southern Ukraine. Chernozem ordinary and Chernozem southern are considered. The amount of groups of potentially available potassium in the layer 0-30 cm are growing up under the influence of irrigation on 40. 3% and 57. https://trendingcustomes.shop/product-category/2-layer-wooden-ornament/