THE PREVALENCE AND HARMFULNESS OF COMMON HOPS ON APPLE TREES IN THE JUNGAR AND ZAILIYSKIY ALATAU OF KAZAKHSTAN

Botanical and morphological characteristics of common hops are given. A threeyear study on vertical zones of the Jungarian Alatau (from 1100 m to 1730 m asl) showed that the common hop (Humulus lupulus L.) is widespread up to the altitude of 1500 m asl, especially in the high-altitude zones 1200-1300 m asl, with an average frequency of occurrence of 85.6- 97.3 %, with the degree of affection of trees 35.9-44.3 %. Hop negatively influences growth and development of the wild tree apple, significantly suppressing growth processes and the weight of fruit: the gain of escapes for 40,3 %, the area of a leaf is at 22,0 %, the weight of fruit is at 23,4 %. It has been established that the intensity of photosynthesis is significantly reduced from 25 to 70 % in the affected trees of the Sieversii apple tree, depending on the degree of damage to the apple tree with hops.

Humulus lupulus L., Malus Sieversii, intensity of photosynthesis, monitoring sites, in situ, population, vertical zoning, prevalence, harmfulness, forestry, inspector sites

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