The influence of agricultural practices on photosynthetic activity and productivity of a new variety of cannabis in the Middle Volga region

Relevance . In 2023, a new variety of single-domed drug-free cannabis, Lyudmila, the fibrous direction use, passed State Examination and was approved for accreditation admis-sion to use on territory Russian Federation. this regard, research development elements cultivation technology in specific soil climatic conditions is scientific practical interest. Methods The experiment based methodological guidelines registration tests offungicides agriculture conducting field vegetation with cannabis. Indicators photosynthetic activity plants crops were determined by method A.A. Nichiporovich. Mathematical processing experimental data carried out dispersion analysis according B.A. Dospekhov. Results Foliar top dressing contributed an increase assimilation surface leaves variants treatment preparations: Izagri Phosphorus — from 111.0 155.7 thousand m 2 /ha, Vita 112.2 139.7 Humate +7 135.9 148.4 /ha (with 101.1–114.3 m2/ha under control). high yield stems obtained when sowing seeding rate 3 million germinating seeds per hectare 15.67 t/ha, decrease 2.5 2.0 hectare, decreased 14.48–12.98 t/ha. treatments are effective, treated higher than control 0.36–0.9 highest seed average 0.98