METHOD FOR SELECTION OF HEMP PLANTS Russian patent published in 1997 - IPC

FIELD: agricultural technology. SUBSTANCE: according to method, hemp plants are grown and selected in conditions of natural climate alternated with growing in conditions of artificial climate which intensifies accumulation of cannaboids in plants. At growing in conditions of artificial climate, introduced in soil are mineral fertilizers N $$$ P $$$ K $$$, moisture content of soil is maintained at level of 55-65% as of its full moisture capacity, and air temperature - 42 C at photoperiod of 11.6-12.3 h. Growing in conditions of artificial climate is carried out in autumn-winter period, and taken for growing is only part of selected material required and sufficient for its evaluation. Selected in conditions of artificial climate only that selection material in which all descendants have stable number of ferrous hairs on bracts not exceeding 8 pieces on 1 sq.mm of their surface. EFFECT: improved commercial properties. 3 cl, 10 tbl