Potato agrocenoses productivity and phytosanitary assessment in the Non-Chernozem region

The purpose of research is to identify productivity and give a phytosanitary assessment of potato agrophytocenoses using agrochemicals. Research has been carried out to analyze fungal diseases of potatoes cultivated in the Non-Chernozem zone of the Ryazan Region. It has been established that late blight, rhizoctonia and common potato scab are common diseases, and therefore the use of protection systems is a very topical issue. Research objectives: determination of the timing of the appearance of late blight and the degree of damage to plants; analysis of potato damage by rhizoctonia and common scab; determination of the effectiveness of drugs Redomil Gold and Imunocytofit against late blight and determination of their effect on potato productivity. The potato variety Red Scarlett was chosen as the object of research. Agrotechnical measures for the cultivation of potatoes were carried out generally accepted for the southern part of the Non-Chernozem zone (post-emergence cultivation for weed control, loosening of the soil, two hilling). It was revealed that the treatment of tubers with Immunocytophyte led to an earlier emergence of plant seedlings, as well as the onset of other phases and delayed the appearance of phytophthora. It was found that Immunocytophyte (treatment of tubers + two sprays) and Ridomil Gold have similar biological effectiveness, the development of the disease decreased by 16-21 %. The use of growth regulators of potato plants led to an increase in yield by 2.3-3.5 t/ha, an improvement in the structure of the yield - the mass of medium and large tubers increased by 4-8 %.