The reaction of seeds of phytomeliorant crops under the condition of natural and technogenic salinization of soils and soils

Abstract. The purpose of the study is to establish optimal and critical values different chemisms degree salinity corresponding indicators osmotic pressure, pH medium for germination energy seeds alfalfa sweet clover. Objectives are identify parameters 50 99 % death studied crops, taking into account chemistry salinity, determine most toxic water-soluble salts in solonetzic soils drill cuttings; participation pressure options, conduct a comparative their on phytomeliorants. Methods. experiments were carried out laboratory conditions. Seeds clover Alsheevskiy variety Yaroslavna used as object study. determined according GOST 12038-84. Scientific novelty. For first time, average lethal dose absolutely established relation chemisms, represented by one easily soluble salt, identical soil technogenic salinization. each chemistry. Results. It was found that low concentration MgSO4 (up 0.3 %) did not reduce alfalfa. Sodium neutral (Na2SO4, NaCl) led loss seed (the lethal) at 2.0–2.9 %, which corresponds high 8.9–13.9 atm. Sweet had higher capacity maximum salinity. Under soda (Na2CO3, NaHCO3), corresponded levels solonetzes cuttings 0.09 0.25 %. phenomenon noted here, respectively, level 0.42 0.95 important take indicator when recultivating order seeding rates select phytomeliorant crops.