Abstract
The paper presents data on the use of the growth regulator “Ribav-Extra” at the stage of blackberry adaptation. Blackberry microplants of the Freedom variety have a high adaptive capacity. In the variant with “Ribav-Extra”, 98 % of plants adapted, in the control variant - 95 %. It has been established that treatment with a growth regulator promotes the development of the plant root system. After treatment with the preparation, 10 roots or more were formed on the plant, in the control variant, on average, 4-5 roots were formed on the plant. The bulk of the roots had a length of more than 4 cm (up to 7 cm), in the control variant 2-4 cm.
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