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The purpose of the research is to study the possibility of Pharmaiod application for golden potato nematode (GPN) decontamination in soil.Materials and methods. The object of research was GPN population recovered with soil from the APF "Russia", Vladimir Region. Tubers of susceptible potato cultivar Sineglazka (hybrid 15555) were used. Experiment to evaluate treatment effects and rates of experimental powder and liquid forms of Pharmaiod was carried out in pots by biotesting.Results and discussion. The obtained data showed that GPN larvae in soil samples died post application of powder form of Pharmaiod at dose level of 0.5% and 1%. Following application of 0.1% Pharmaiod alive GPN larvae were found in separate cysts. Pharmaiod liquid form significantly reduced the number of GPN females on roots (biological efficiency - 96%). Liquid form (at dose level of 0.5% and 0.1%) and powder form (0.1%; 0.5%; 1%) of Pharmaiod appeared to be phytotoxic: the tubers did not germinate and did not form a root system.

The purpose of the research: to develop verbal, analogous, mathematical models of projected growth of potato globoderosis depending on agrometeorological conditions. Materials and methods. Analysis of national and foreign literature regarding epiphytotiology, modeling was performed, as well as available literature data and personal supervision about influence of meteorological conditions on the potato globoderosis development were generalized. A database received in Kondrovo of Kaluga Region was used in order to develop verbal, analogous, mathematical model. One experimental field was chosen out of 40 experimental fields and plots of land where Sineglazka vulnerable variety was grown during 1979-1993. On the field with average soil quality the population density of nematodes varied from 14,900 to 27,300 (average 20,600) ovicells and larvas at the 100 cubic cm of soil. Globoderosis development was evaluated according to the scale for at-ground visual appraisal of defeat potato plants by globoderosis in points annually in July. Phenological, phytosanitary and phytohelminthological metering and supervision at the experimental field were conducted during vegetational season. Correlation and regression analysis of collected material was conducted using software application Microsoft Excel. Results and discussion. Сorrelation coefficient for meteorological factors closely related to globoderosis development over 15 years were calculated with the help of correlation analysis. Predictors (average daily temperature, quantity and amount of rainfall) for short period forecast of globoderosis development while planting of potatoes with average level of fertility were determined. As the result of regression analysis mathematic models of projected growth globoderosis depending on agrometeorological factors were received. Confidence of a mathematical model, i.e. differences of expectancy record from retrospective average 3.6%. Correspondence of mathematic model was checked by historical data using correlation coefficient between the result of projected growth globoderosis and measurement data. It is 0.83. Accuracy of forecast varied from -36.8 to 36.5%.

The book is intended for plant protection and quarantine specialists, it is of interest for students, graduates and postgraduates of agronomic and biological specialties, for organizers (managers) of state services on plant protection and quarantine, ecology.

The purpose of the research is to study the effect of Farmayod on nematodes of different trophic groups, including rootknot nematode larvae, in vitro and in vivo.Materials and methods. The object of the research were larvae of the root-knot nematode Meloidogyne incognita obtained from the roots of infected plants from the Vladimir Region. The study of the effect of Farmayod in three concentrations was carried out in laboratory, using the biotest method on pumpkin plants. The effect of liquid Farmayod on the viability of nematodes of different trophic groups was studied in vitro and in vivo.Results and discussion. Liquid 0.1% Farmayod showed phytotoxicity, and not a single plant germinated. The drug in the form of a 0.01% solution showed phytotoxicity but to a lesser extent. The root system was less developed (60%) than in the control. The plant height was also 15% less. Farmayod at a concentration of 0.01% did not have phytotoxicity and reduced meloidoginosis versus the control. The biological efficacy of such dose was 56% higher, and the plant height was 30% more. The drug at a concentration of 0.01% had no effect on the plants damaged by meloidoginosis due to its phytotoxicity and poorly developed root system of the plants versus the control. Thus, at low concentrations, Farmayod acts on plants as a trace element necessary for plant vegetation, which affected the size of the plant. On the other hand, it can significantly reduce the infection of pumpkin roots with root-knot nematodes. Since this concentration is not toxic to nematodes, it can be assumed that the drug affects the nematode indirectly through the plant.