Suchareva R. Potato globoderosis disease and its injuriousness restriction measures in Western Forest Steppe of Ukraine

The situation of Globodera rostochiensis dispersal in 2001-2005 is analyzed, on the basic of the results of self-conducted research on the territories of Zakarpattya, L'viv, Ternopil', Volin', Rivne' regions, with the data of Ukrainian State Quarantine Service. On the basis of the own research, the pest distribution maps are developed on the territories of these regions. The methods of potato cyst nematodes selection, detection, isolation and identification are elaborated and improved. These methods are recommended for application during the quarantine and phytosanitary surveys. The dissertation is also devoted to the investigation of Globodera rostochiensis development biological peculiarities on host plants, and of their harmfulness, depending on the level of soil outcoming invasive loading.The effectiveness of carrying out the agrotechnical, chemical and biological protection measures against Globodera rostochiensis are experimentally proved. The most ecologically safe, economically profitable and highly-effective measures are the agrotechnical ones. These are: production of non-susceptible arable and vegetable crops, resistant potato varieties, and also fallow inclusion. The usage of nematode-resistant potato varieties and hybrids causes a significant decrease in number of the phytohelminths in soil. At this, the researched varieties and hybrids were characterized by different nematode-removing effect, which depended on the level soil outcoming invasion, plants biological peculiarities and weather conditions during the vegetation period. The most optimal norms and methods of organic (Biovit, mulch) and mineral fertilizers, chemical agents (Percalcit, Preparat №2 - urea peroxyhydrate, Carbamid, Copper vitriol and Trisep), and the biological preparation (Hetomic) application for control of Globodera rostochiensis number in soil at producing resistant potato varieties, are selected. The recommendations for production of rational and sound anti-nematode measures application are developed.