Effect of Vermicompost Liquid on Growth of Mizuna (Brassica rapa var. nipposinica) in a Hydroponic System
Keywords:
vermicomposting liquid, hydroponic, Perionyx sp.1, IAA, GA3, MizunaAbstract
Vermicomposting liquid contains microorganisms and plant hormones that can enhance plant growth. This research aimed to examine the amount of IAA and GA3 in vermicomposting liquid and in selected microorganisms isolated from it. The effect of vermicomposting liquid on the growth of Mizuna (Brassica rapa var. nipposinica) in a hydroponic system was also investigated. The study revealed the highest amount of IAA (123.31µg/ml) and GA3 (123.78 µg/ml) were produced by Penicillium menonorum and P. toxicarium, respectively, while the vermicomposting liquid contained 0.09 µg/ml of IAA and 0.56 µg/ml of GA3. Spraying vermicomposting liquid on Mizuna plants grown under hydroponics resulted in greater plant height, leaf number, leaf fresh weight, left width and root length compared to the control. The leaf number of vermicomposting liquid treated plant was higher than that of 25 ppm and 250 ppm synthetic IAA as well as 50 ppm and 500 ppm GA3. The study concluded that vermicomposting liquid can effectively promote the growth of Mizuna.
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