Investigation of chemical composition on the different vegetation potatoes (Solanum tuberosum L.)

The investigations were conducted in the 2017 - 2018 academic year in the Laboratory for Agronomy and Zootechnics of Aleksandras Stulginskis University. Potatoes tubers of `Solist`,` Vineta`, `Laura` and `Jelly` varieties were grown in the vegetable farm in Šakiai district. Samples of potato tubers, depending on the different stages of the breed, were taken twice - at the stage of the 11th organogenesis, during the accumulation of spare substances in the tubers, and during the 12th stage of organogenesis - when the tubers reached full maturity.An investigation of two factors has been done: factor A - potato variety, factor B - time of harvesting of tubers. It was estimated that: Early potato varieties accumulated more protein than late and their amount directly depended on the harvest time. Early - breed potatoes accumulated less vitamin C than late, as well as the amount of element directly depended on the harvesting time of the potato tubers. The quality of carotenoids was mostly influenced by the characteristics of the breed, as well as the harvesting timeVytauto Didžiojo universitetasŽemės ūkio akademij