Application efficiency of new complex fertilizers in the cultivation of potatoes

The efficiency of new complex organic and mineral fertilizer SUPRODIT M and biologically active organic and mineral complex GEOTON for potatoes has been studied. SUPRODIT M is applied under the basic or seedbed preparation. GEOTON is intended for presowing treatment of seeds, including potatoes, and for surface treatment of vegetative plants during the periods of their maximum growth and needs of plants in nutrients and is applied 1-2 times during the vegetation period. The results of researches and field tests showed that the use of SUPRODIT M allows to increase potato yield by 10-50%, depending on cultivar and soil-climatic conditions. Spraying the crops with GEOTON increases tuber yield by 10-27%, depending on the cultivar, phase of treatment, number of treatments and soil and climatic conditions. The application of SUPRODIT M and drug GEOTON in the technology of potato cultivation gives a further yield of 4.7 to 12.5 and 2.5 to 9.8 t/ha of tubers on soddy podzolic soil and on grey forest - 2,0-8,8 and 3,7-10,0 t/ha, respectively, depending on the variety. The introduction of SUPRODIT M contributes an increase of the quality of products and the content of microelements in the tubers: Mo 1.6-3.0%, B - 1.5-1.8 times. The starch content in tubers increases by 10%. The nitrate content in tubers when applying GEOTON reduces by 9-21% and the starch content increases to 8%. The organic and mineral fertilizer SUPRODIT M and organic and mineral complex GEOTON are effective agrochemicals in the technology of potato cultivation on different soil types.