Apple cultivars resistance to scab on the territory of the Republic of Abkhazia

Abstract

invasion is the importation of the sawfly in its preimaginal phases with the planting material, followed by independent expansion of imagoes. the absence of broadleaved peony species in the natural ecosystems of the steppe zone is a key factor constraining the expansion of the T. talyshensis range. During mass reproduction, it causes serious damage to flower-decorative plantings.

Biochemical composition of apple fruits when treated with growth-stimulating agrochemicals

“…The objects of research were the fruits of apple trees of the Golden Reinders variety (rootstock M 9) grown on the basis of experimental plantings Agricultural institute, Science Academy of Abkhazia (Sukhumi district Republic of Abkhazia). Golden Reinders is a clone of the variety Golden Delicious, the average yield of plants is 789.5 c/ha [7]; the variety is characterized by average resistance to drought and high temperatures, in the subtropical conditions of the Republic of Abkhazia, the fruits ripen from the end of August to the second decade of September, depending on weather conditions [1,4]. Variety Golden Reinders included in the State Register for the North Caucasus (6) region [7].…”

“…The conditions of the temperate zone are the most optimal for apple trees, but due to the great popularity of fruits, it is also grown in humid subtropics (both on the territory of the Krasnodar region of Russia and on the territory of the Republic of Abkhazia). However, the peculiarities of humid subtropics cause a number of factors constraining the cultivation of apple trees in the region, connected both with the spread of diseases and pests [1,4] and the influence of unfavorable conditions of abiotic nature, in particular, hydrothermal stressors [1,5]. Among the factors constraining the cultivation of apple trees in the subtropics of the Republic of Abkhazia can be attributed high humidity, on average in the Republic of Abkhazia -79 % depending on the period of the year [6], as well as uneven precipitation with an annual dry period (up to two months) against the background of high air temperatures [5,6].…”