APPLICATION OF COMPOST PRODUCED BY BIOCONVERSION OF COFFEE HUSK BY BLACK SOLDIER FLY (Hermetia illucens) AS SOLID FERTILIZER TO LETTUCE (Lactuca sativa var.crisp): IMPACT TO GROWTH

• Main Author: APRIYANI NURJANAH (NIM : 11413041), KATIANA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/22770
• Institution: Institut Teknologi Bandung

Lettuce is one of the most cultivated vegetables in West Java. Fertilizer plays important role for growth of this vegetables. Increasing cost of synthetic fertilizer and preference on less chemical residue agricultural products shifted the cultivation toward to application of more <br /> <br /> organic fertilizers. In this study, compost produced by bioconversion of coffee husk by Black Soldier Fly larvae was applied as part of lettuce cultivation in order to observe the effect to growth with measuring plant height, number of leaves, leaf area and chlorophyll content. This <br /> <br /> study is design by randomized block design method with 5 treatments and 5 repetations. The treatments of this study are manure based on recomendation of BPTP Sumatera Utara with Soil and manure percentage 1:1 %v/v (A), compost produced by bioconvertion of coffee husk by Black Soldier Fly with soil and compost percentage 1:1 %v/v (B), compost produced by bioconvertion of coffee husk by Black Soldier Fly with soil and compost percentage 2:1 %v/v <br /> <br /> (C), Coffee husk without bioconversion with soil and coffee husk pestentage 1:1 %v/v (D) and Coffee husk without bioconversion with soil and coffee husk pestentage 2:1 %v/v (E). The result shows that lettuce cultivated with manure significantly produced highest plant height (20.37 ± 1.565 cm), number of leaves (12.20 ± 1.119), leaf area (129.45 ± 29.622 cm2), and chlorophyl content (5.92 ± 1.227 mg/liter). On the other hand, lettuce Cultivated with compost originated from bioconversion process showed second best value which is higher than value of coffee husk without bioconvertion.