INFLUENCE OF LIMING ON A POTASH MODE IN SOD-PODZOLIC LIGHT LOAMY SOILS

Abstract

In given article results of our research on influence of liming on potash mode of sod-podzolic light loamy soils are resulted. Liming has made various influence on dynamics of soil potash forms depending on a security background potash on sod-podzolic light loamy soils. Between forms of soil potash dynamical (mobile) balance and if the plant absorbs water-soluble potash its content in soil fills at the expense of exchange, and that in turn at the expense of not exchange is established, eventually. Change of acidity of soil with рН_KCI 4,8-4,9 to рН_KCI 5,4-5,6 and рН_KCI 6,3-6,5 has resulted: at level of the content of mobile potash 200-250 mg/kg to increase in the content of water-soluble, exchange, mobile forms of soil potash during too time have decreased the content of not exchange form that testifies to possibility of use of not exchange form of potash; At level of the content of mobile potash 300-350 mg/kg - to increase of content in soil of water-soluble, not exchange forms of potash, are probable at the expense of reduction of the content of exchange and its mobile form.