MODELING ANALYSIS OF WATER REQUIREMENTS IN THE CULTIVATION OF MUSTARD PLANTS (BRASSICA JUNCEA L.) WITH COMPOST AND DRIP IRRIGATION SYSTEMS IN POLYBAGS

• Main Author: - Nim: 11414041 , Indria
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/28050
• Institution: Institut Teknologi Bandung

<p align="justify">Green mustard is a vegetable commodity that is very potential to be cultivated. Green mustard is favored by people ranging from the lower class to upper class society (Fahmi 2013). Plant cultivation techniques that need attention include fertilization. Based on the case that the use of inorganic fertilizers can reduce soil fertility, the use of organic fertilizer began to be crowded. The advantages of organic fertilizer from inorganic which is to increase soil nutrient content, can loosen top soil, increase the number of microorganism populations, and increase the absorption and retention of water in the soil (Sutejo, 2002). This study uses organic fertilizer from Brassica vegetable waste which is decomposed with mushrooms Marasmius sp. and added yeast Saccharomyces sp. Mushroom Marasmius sp. able to produce lactase and cellulase enzymes that can degrade lignin and cellulose of plant cells. Meanwhile, yeast Saccharomyces sp. produce cytokines and maximize the performance of Marasmius sp. Compost from waste Brassica vegetables is tried for Tosakan variety (Brassica juncea L.) mustard cultivation in this study. The control treatment was carried out according to the Balitsa procedure. The research conducted at the ITB Jatinangor screen house aims to study the effect of organic fertilizer from Brassica vegetable waste on the growth of mustard plants and determine the water needs of mustard plants. Plant parameters observed in this study are plant water consumption, plant growth (area and number of leaves), harvest weight, chlorophyll content. The results of this study obtained water needs of mustard plants with Brassica vegetable waste fertilizer 70.94 ml / day or 8.94 mm / day while in the control obtained lower water requirements were 64.63 ml / day or 8.23 mm / day. The leaf area for compost treatment was 118.89 cm2 and the control treatment was 81.49 cm2. The number of leaves for compost treatment was 11 and for the control treatment was 10. Harvest weight for compost treatment was 90.84 grams and for the control treatment was 59.63 grams. Chlorophyll content for compost treatment was 11.26 and the control treatment was 9.2. Based on the graph pattern obtained the equation of the mathematical model of growth of water consumption for organic fertilizer is -0.0158x6 + 0.4443x5 - 4.8702x4 + 26.077x3 - 70x2 + 87,344x - 34,177 and for control is y = -0,019x6 + 0,5008x5-5 , 1399x4 + 25,884x3 - 65,925x2 + 78,981x - 29,884. <p align="justify">