Biologic and chemical preparations effect upon indices of vegetation mass and potato productivity in Primorsky region

In the study the efficiency of using protective preparations of chemical and biological origin when processing tubers and plants of potatoes during vegetation in climatic conditions of Primorsky Re-gion was estimated. The results of synthetic pro-tectant Maxim action in complex with preventive pesticide of Tanos, and also natural immunomodulators, i.e. a set of biologically active agents Zircon P are presented, microbiological preparation Fitosporin-M and humic preparation Complex 3 on the formation of vegetative weight, fractional structure and indicators of production of general, commodity and seed potatoes of grade Amber. The existence of close interrelation be-tween general productivity and the area of average leaf of potatoes was proved. The influence of the studied preparations on the formation of the area of a leaf surface and the value of photosynthetic po-tential of landings for vegetation was established. The application of protectant of Maxim when plant-ing potatoes and fungicide of Tanos during vegeta-tion increased the quantity of stalks of plants by 14.3 %, having provided the maximum photosyn-thetic potential equal to 1.82 thousand sq.m of days/hectare. The use of biologically active agents as elements in technologies of potatoes cultivation positively affected the formation of elevated bio-mass, but did not promote active formation of tu-bers. The maximum gross productivity and stand-ard seed material exit was provided by option with application of synthetic protectant Maxim before planting in complex with fungicide Tanos during vegetation 28.8 and 19.8 t/hectare respectively. Using biological active agents did not increase the production of potatoes (25.3-25.6 t/hectare) in comparison with control (26.2 t/hectare). The culti-vation of potatoes without using of protective prep-arations (control) promoted the maximum exit of consumers’ potatoes equal to 5.3 t/hectare.