MODELING THE TOTAL GROWTH OF SOIL FUNGI COLONIES DURING CULTIVATION OF MUSTARD GREENS USING ORGANIC FERTILIZERS FROM BRASSICA WASTE

• Main Author: Cantika Aristia - Nim: 11414016 , Alma
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/25395
• Institution: Institut Teknologi Bandung

<p align="justify">Green mustard (Brassica juncea L.) is a vegetable that has a high nutritional content. This leaf vegetable has the third highest economic value in Indonesia after cabbage and broccoli. However, the productivity of green mustard in Indonesia is not stable. One of the causes is the high use of pesticides and chemical fertilizers. These chemicals cause the soil to be damaged so that its usability decreases. Reducing the use of inorganic fertilizers and replacing them with organic fertilizer is one of the efforts to overcome this problem. This study tried organic fertilizer decomposed vegetable waste by Marasmius sp. and added yeast Saccharomyces cerevisiae for mustard cultivation. Marasmius sp. able to produce lactase and cellulase enzymes that can degrade lignin and cellulose of plant cells. Meanwhile, Saccharomyces cerevisiae yeast provides a nitrogen source that increases the performance of Marasmius sp. and produces phytohormones and antimicrobials. The cultivation of mustard green plants is carried out by cultivation procedures from Balitsa where inorganic fertilizers are replaced into compost from vegetable waste and added with Saccharomyces cerevisiae. The control treatment was carried out according to the Balitsa procedure. The research conducted at ITB Jatinangor Campus during December 2017-April 2018. The aims of this studied are to determine the effect of organic fertilizer from vegetable waste on the growth dynamics of total soil fungi and phosphate solvent fungi on the cultivation of green mustard, determine the dynamics of soil fungi diversity in green mustard cultivation and determine the effect of organic fertilizer from vegetable waste on the growth and yield of mustard plants. The plant parameters observed in this study were the condition of soil fungi, plant growth (area and number of leaves), and yields. The results showed that there were 8 types of fungi with different occurrences in each treatment. The dominance of fungi in organic fertilizer treatment was carried out by Aspergillus sp1, Marasmius sp., and Fusarium sp. The dominance of fungi in the control was carried out by Marasmius sp. and Fusarium sp.. The mathematical model for total fungi growth in organic fertilizer treatment is y = -0.0013x6 + 0.0311x5 - 0.2948x4 + 1.389x3 - 3.3952x2 + 4.0503x + 3.282 and for control treatment is y = -0,0028x6 + 0,0724x5 - 0,7165x4 + 3,4563x3 - 8,4637x2 + 9,9389x + 0,5464.<p align="justify">