To accelerate the maturation of soybeans and the possibility of timely mechanized harvesting, chemical preparations — desiccants (for drying plants on the root) are used. The results of 2-year tests of desiccants on their effect on grain moisture and crop yield are presented. It was found that when using desiccants, the moisture content of soybean grain decreased on the 7th day of the spraying field by the amount from 12,0 to 12,6% and the yield increased by 119,8–134,6%.