Application efficiency of «Azorro, KS» fungicide in growing common oak seedlings in open and protected ground

Abstract

Nowadays the problem of oak forests degradation is topical today in the Republic of Tatarstan, where large woods are formed and are considered to be the most valuable. The area of oak plantations decreases every year due to damage caused by frosts in 1978–1979, therefore, with the oak dying, the areas of aspen, linden and birch plantations increase. The oak forests regeneration is connected with the cultivation of healthy planting material in the nurseries of the region. The article is devoted to the study of the fungicide «Azorro, KS» efficiency in the cultivation of common oak seedlings in open and protected ground conditions. The research was carried out at the experimental site of the Faculty of Forestry and Ecology of the Kazan State Agrarian University. In the course of the research, a phytopathological analysis of acorns was carried out, the degree of infection with pests and diseases, safety by the end of the growing season was determined; biometric indicators of common oak seedlings were measured. The following types of fungi have been found such as Penicillium, Mucor and Rhizopus. The positive effect of the drug used on the growth and development of seedlings in open and protected ground was noted. The highest common oak seedlings were noted in protected ground using a fungicide — 21,0 cm, in open ground the average height was 11,0 cm. The preparation showed its highest efficiency in protected ground — 92 %. High efficiency in the open ground after the third treatment was 90 %. The safety of common oak seedlings by the end of the growing season in protected ground conditions varied from 96,9 to 97,1 %.