Ivan Vladimirovich Gorepekin

The creation possibility of highly effective universal stimulating preparation for presowing seed treatment of various grain crops on the base of sorption)stimulating preparation (SSP), consisting of calcium bentonite (CB), humate (H), brewer’s yeast autolysate (BYA), and gibberellin (Gibb) is studied. The introduction of some non)ionic surfactants into the preparation composition results in the disintegration of bentonite aggregates into individual montmorillonite particles and an increase in the active surface of the sorption complex. It gives an opportunity by increasing the gibberellin concentration to improve the SSP efficiency in 1,5 times. As a result, 5)component composition (SSP-5), including CB, H, BYA, Gibb, PEG, is developed, and its efficiency on spring wheat of Lisa cultivar on sod)podzolic soil is 56%.

The introduction of other BAS into the preparation to make up a possible lack of these compounds in seeds showed that with an increase in the stimulation of some seeds for other ones, the supplementary adding of phytohormones reduces the overall effect. These data allow suggesting that it is not possible to create universal preparation highly effective for all seed.

Since gibberellin stimulates seeds development much more often than other phytohormones, we tested the SSP-5 action on seeds of different cultures and cultivars. It is established that, in most cases, this preparation effective for seed stimulation, but the efficiency values from its application vary markedly.