Investigation on the influence of bio-urine, fermented with local microorganisms (MOL) from gamal (Gliricidia Sepium)leaves on the growth and yield of green mustard (Brassica juncea L.)
2011
Ni Wayan Sri Sutari, Udayana Univ., Bali (Indonesia). Lab. of Biopesticide
Cow urine is a bio-fertilizer, however without fermentation it is just waste and could not be effectively utilized by plants. Therefore, this study sought to convert cow urine (waste) to bio-urine and use as a fertilizer. Our strategy is to use local microorganisms (MOL) from Gamal leaves as a starter for fermentation and determine the biodiversity of microorganisms, the nutrients of bio-urine particularly plant hormones, as well as the influence of bio-urine on green mustard (Brassica juncea L.). In our investigation, the microorganisms found in bio-urine are fungi, Aspergillus sp., Rhizopus sp., Phoma sp., Candida sp., Penicillium sp. and Fusarium sp., as well as bacteria, Pseudomonas sp., Burkholderia sp., and Serratia sp. In bio-urine, plant hormones were detected, 1197.6 mg/L. The treatment by bio-urine had significant effect on plant growth with the concentration with 200ml/L water resulting in number of leaves, 11.27, plant height 27.28cm, average weight of fresh plant, 75.37g and average weight of oven dry plants 7.56g. These phenomena clearly indicate bio-urine has the potential as a fertilizer consistent with the goal to utilize waste for organic farming.
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