Lazarchuk L. Productivity of the potato depending on share of this crop in crop rotations on sod-podzolis soils of Ukrainian Polissya

Dissertation presents the results of research on cultivation of potato in crop rotations with high share of this crop. Peculiarities of growth, development and yield formation of potato in two-link crop rotations and as monoculture were established. Use efficiency of predecessor non-commodity product, such as straw of winter rye as a catch crop for green manure was studied. Possibilities of obtaining of environmentally-safe products without application of mineral fertilizers and minimal use of chemical plant protection sources for potato were investigated. Expediency of yearly replacement of planting material of potato, if it has been grown as monoculture and use of planting material during four years were substantiated. Influence of saturation of crop rotation with potato on infection of potato plants during vegetation and tubers at harvesting with diseases was found out. Energy-economy evaluation indicates high efficiency of potato production in crop rotations with short rotation period and as monoculture. According to results of research were developed and recommended to production elements of potato cultivation technology in crop rotations and as monoculture that enable production of environmentally-safe products and mitigate negative impact of saturation of crop rotation with potato.