EFFECT OF VERMICOMPOST DOSES ON CANABIS SATIVA PHOTOSYNTHESIS-RELATED PARAMETERS, GROWTH AND YIELD

Hemp, Cannabis sativa is certainly a mul­tifunctional as well niche crop, due to great po­ten­tial for innovative use of its different products. Aspects hemp mineral nutrition are very important in the cultivation these plants, particular make cul­ti­vation environmentally friendly by replacing synthetic fertilizers with organic ones. Among fertilizers, vermicompost has gained attention within last decades. Explaining role vermicompost, this study evaluated effects doses fer­ti­lizer on hemps two separate field studies. In small-scale experiment, effect ver­micompost and adequate concentrations elements growth, physiological condition, yield was compared. The increasing condition analysed broader experiment. experiments were performed at Viļāni Scientific Centre Agricultural Resour­ces Economics, 2017 2018, using Latvian cultivar ‘Pūriņi’. For experiments, certified produced ‘Eko Zeme’ (Latvia) used, which from composted cow manure adding grass biomass. posi­tive growth greater than equivalent fertilizer con­centra­tions. When doses, better (40–60 %) observed 5 10 t ha-1, stem increased average 40 % seed ranging 1.00 ha-1 control 1.56 20 plants treated ha–1 plants. weight 1000 seeds per plant all variants (from 13.54 13.85 g) relatively close indicated maximum level (14.59 g). A statistically significant increase chlo­ro­phyll concentration leaves under influence vermicompost. Per­for­mance Index chlorophyll fluorescence measu­rement only individual experimental variants; regardless how respective general, results characterize local agroclimatic conditions allow expect stable in­fluence