The influence of sowing rates and mineral fertilizer dozes on productivity of zoned monoecious hemp varieties diana, ingreda, and antonio and thc content

The influence of sowing rates and mineral fertilizer dozes on productivity of zoned monoecious hemp varieties Diana, Ingreda, and Antonio cultivated for seeds and double use is studied. It is established, that at cultivation for seeds, the optimum sowing rate is 0.9 mln. seeds ha-1 with application of N180P135K135. At the double use cultivation the sowing rates should be increased up to 2.1 mln. seeds ha-1, and a doze of fertilizers be lowered up to N120P90K90. At these NPK dozes and sowing rates THC content is 0.037-0.043 %, which is below an acceptable level.