Efficiency of Using ProRostim Biological Preparations on Potatoes

The purpose of the study is to determine the effect of bioorganic preparations ProRostim “Start” and ProRostim “Standard” on the formation of yield and quality of potatoes of the Gala variety in conditions of sod-podzolic soil. The greatest reduction in late blight was with the combined use of ProRostim “Start” when processing tubers and ProRostim “Standard” during the growing season. Three-time application of ProRostim “Standard” during the growing season led to an increase in the incidence of potato late blight. The use of ProRostim “Start” significantly increased the yield of potato tubers by 2.5 t/ha (6.6%). The yield increased even higher by 3.3 t/ha (8.5%) when using ProRostim “Start” and “Standard” together. The highest potato yield – 42.7 t/ha – is observed in the variant with the use of ProRostim “Start” preparations and double treatment with ProRostim “Standard”. The studied options did not have a significant effect on the percentage of starch in potatoes.