Abstract
The article presents data on the distribution in the territory of Uzbekistan and the morpho-biological description of American thrips (Echinothrips americanus Morgan). In Uzbekistan, this pest was discovered in 2014 in greenhouses of the Tashkent region. Trips belong to wide polyphagous and therefore are very dangerous. In 2018, the greenhouses of Shomurod Ugli, Kibray district, Tashkent region, tested several drugs. The results of studies showed their high efficiency - on the 14th day after treatment, the death of thrips was observed (88-92%). In the future, complex measures will be developed that will include not only a chemical control method, but also a biological one.
Highlights
Cuttings length 25–30 cm characterized by high adaptability
The best survival was observed in the cuttings
By the end of vegetative growth leading to escape the majority of seedlings Russian olive reaches 83–166 cm in height
Summary
INFLUENCE OF CUTTINGS OF LENGTH ON GROWTH AND PRESERVATION OF OWN-ROOTED SEEDLINGS. The end of the growing season 09.29. Preservation plants from cuttings autumn harvesting and spring planting was 88%, the spring blank — 64%. Cuttings length 25–30 cm characterized by high adaptability (88–72%), cuttings 15 cm long low survival rate (42%) Table 2. The best survival was observed in the cuttings, prepared with annual shoots. By the end of vegetative growth leading to escape the majority of seedlings Russian olive reaches 83–166 cm in height, maximum 160–221 cm. In the autumn or early spring, harvesting cuttings at vegetative propagation nursery in Russian olive optimal length is 30 cm
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