Search academic texts

Information × Registration Number 0221U100999, 0119U002130 , R & D reports Title Improve the elements of the technology of production of poisonous seed potato material in the conditions of the southwestern part of the forest-steppe of Ukraine. popup.stage_title Head Semenchuk Valentina G, Кандидат сільськогосподарських наук Registration Date 12-01-2021 Organization Bukovynian State Agricultural Research Station of the Institute of Agriculture of the Carpathian Region of the National Academy of Agrarian Sciences of Ukraine popup.description2   Studies have identified the most productive registered potato varieties, and established the terms of elite seed potato varietal renewal in various phytosanitary growing conditions in southwestern part of Ukrainian Forest steppe. The highest crop capacity among the investigated potato varieties is set in the early varieties group – on the variety Schedryk 38,3 t/hа; mid-early – Avangard 32,0 t/hа; medium-ripe – Predslava 46,0 t/hа, medium-late Sluch 30,3 t/hа. The highest seed fraction yield has been provided by the varieties Soloha and Slauta –68-69%. When determining potato plants infestation with viral diseases, it has been established, that it depended on a variety property to resist viral infection. Herewith, the diseased plants total number has not exceeded the current standard requirements concerning additional seed potato. When the elite producing to the forth reproduction, seed potato productivity and quality gradually decreases. The fourth reproduction yield capacity, compared to the elite in additional seed production nursery, has decreased by 1-13%, (on the variety Okolytsya in the reporting year it was even slightly higher), and in the private sector - by 16-29%. The same regularity has been observed on other productivity indicators as well. At seed potato reproduction in conditions of homestead sector, the stands infestation with viral diseases leads to productivity- and seed quality reduction of the third – fourth reproduction. That is why the varietal renewal is necessary to be conducted after the elite reproduction up to the second reproduction. Considering the improper phytosanitary condition among potato stands, as well as the rapid reinfection of the high-quality seed potato with viral diseases, particularly when producing it in private sector, - based on the research carried out, the varietal renewal mode is recommended, which includes performing a gradual annual renewal of elite class seeds in quantity 10 % from a farm need. Product Description popup.authors popup.nrat_date 2021-01-12 Close