Abstract
High interest in ornamental plants as an element of landscaping has been actively going on in recent years. In urban green construction, it is increasingly possible to meet not native local species, but introduced plants, which in urbanized environments are in many cases more stable and durable. For several years, we have been studying the selection of root formation stimulants, as well as their necessary concentration for treating cuttings of Thuja occidentalis forms. As a result of the calculation of economic efficiency, an increase in profitability was revealed when using phytohormones compared with the control. As an effective growth stimulator, the IBA (indole-buteric acid) drug (100 mg/l) was chosen. The use of IBA auxin (100 mg / l) allows to increase the profitability of production and provides a high yield of planting material with minimal costs.
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