Productivity indicators of common beans (Phaseolus vulgaris) when applying plant growth regulators in the north-west conditions

The article presents the results of a three-year research devoted to treating common beans with a protective-stimulating complex. Pre-sowing treatment has included seed soaking before sowing and double spraying of plants with growth regulator solutions in various concentrations during the growing season. It is shown that the use of biological preparations before sowing beans increases field germination by an average of 5-7%. The optimal concentration of the humin-fulvate complex is 10 % for increasing the seed yield. This preparation concentration has made it possible to increase the yield by 0,9 t / ha.