ABSTRACT
Abstract ..................................................................................................... 4 1.1 Introduction ...................................................................................... 4 1.2 Materials and Methodology ............................................................. 5 1.3 Results and Discussion .................................................................... 7 1.4 Conclusion ..................................................................................... 16 Keywords ................................................................................................ 17 References ............................................................................................... 17
RAFAIL A. AFANAS’EV, GENRIETTA E. MERZLAYA*, and MICHAIL O. SMIRNOV
Pryanishnikov All-Russian Scientific Research Institute of Agrochemistry, 31A, Pryanishnikov St., Moscow, Russia 127550, E-mail: rafail-afanasev@mail.ru, User53530@yandex.ru
*Corresponding author. E-mail: lab.organic@mail.ru
ABSTRACT
Studies in the field experiments showed that in the technology of potato cultivation in different regions of Russia the most important factor in the formation of a stable yield and high quality of tubers is a science-based joint application of organic and mineral fertilizers. At the sod-podzolic light-textured loamy soil, when using organic fertilizer system comprising 20 t of manure per year per 1 ha and 45 kg/ha of active ingredient of mineral nitrogen, phosphate, and potash fertilizers, you could achieve stable potato productivity with a potato starch containing 14.4% at the level of 36.6 t/ha, which is 40% higher than the control without fertilization. When potatoes were fertilized we observed the efficiency of the use of traditional organic fertilizers-manure, chicken manure, and fertilizers on the basis of sewage sludge-compost and granulated organic-mineral fertilizer (GOMF). At the sod-podzolic middletextured loamy soil by applying the GOMF at a dose of 4 t/ha per year, as aftereffect the yield 22.4 t/ha of potato tubers was obtained, which exceeded the control at 3.7 t/ha or 20%. The content of heavy metals, arsenic, and nitrates in potato tubers was at the level of the control values, indicating the environmental safety of plant production. In the northern region (Yakutia) at the permafrost taiga soils, we established, while cultivating potatoes, the usefulness of chicken manure and cattle manure in a pure form, as well as peat-litter compost at a ratio of 1:1 at a dose of 300 kg/ha of nitrogen, which ensured the yield of tubers 26.5-26.6 t/ha or 29-30% above control.
