Effect of vermicompost extracts, chelate and seaweed extract on growth, antioxidant activity and total phenolic compound content of cannabis
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Abstract
Cannabis cultivation requires production to control the quality of raw materials for medical grade. The cultivation process is important because it is to affect the quality of cannabis. This research was to study the effect of vermicompost extracts, chelate extract and seaweed extract on growth, antioxidant activity, and the total phenolic compound content of cannabis to provision the basic information for those who are interested in future cultivation and research. The experiment was conducted in a Completely Randomized Design (CRD) with ten replications for four treatments. Fertilizer was a control factor (Fertilizer; Control), vermicompost extracts (VE), vermicompost extracts mixed with chelate (VE+CL), and vermicompost extracts mixed with chelate and seaweed extract (VE+CL+SE). Fertilize by pouring onto the planting material at the amount of 2,000 ml per pot once a week for 8 weeks. The results showed that the VE+CL+SE had the best cannabis plant growth in the 8th week with plant height, canopy width, stem diameter, leaf width, leaf length and SPAD values were 166.40, 57.03, 1.37, 23.30, 20.76 cm and 49.75 SPAD units, respectively. The chlorophyll a, chlorophyll b, total chlorophyll, and total carotenoids had the highest values of 5.67, 7.48, 13.16 and 2.37 gFWL-1. Fertilizer application (control) showed the highest antioxidant activity with an EC50 of 77.28 gFWL-1 and a total phenolic compound content of 15.37 gGAEL-1. Therefore, VE+CL+SE may be sufficient just for growing cannabis farmers who want to sell only fresh leaves. But for farmers who want to grow cannabis to sell dried leaves to be used as raw materials for producing herbal medicines, it may be important to consider active ingredients. Organic fertilizers should be added together with chemical fertilizers to the soil used to grow cannabis as well.
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References
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