By: Wawan Apzani
Abstract
This research is important to be done with the aim to increase domestic lettuce production, development of area potency through the discovery of natural resources, and utilization of organic water hyacinth in Lombok island. This research was conducted at Green House Faculty of Agriculture University 45 Mataram. This study aims to determine the effectiveness of liquid organic fertilizer water hyacinth fermentation results Trichoderma spp. on the growth of lettuce. The research method used is experimental method with experiment in Green House. This research was designed using Randomized Complete Randomized Design (RAL) experiment with single factor experiment that is liquid organic fertilizer water hyacinth fermentation Trichoderma spp. which consists of 5 levels and 5 repetitions. The initial phase of the research was to arrange the experimental layout according to the treatment code of 25 experimental units, the planting of lettuce seeds, the provision of liquid organic fertilizer, irrigation, pest and weed management, and data collection. 
The next stage of data was analyzed by regression analysis to determine the effectiveness of fertilizer and the best dosage of fertilizer from the acquisition of regression coefficient value (b). Analsis results show that liquid organic fertilizer water hyacinth is effective in improving the growth of lettuce plants. Research shows that water hyacinth can be used as an alternative base liquid organic fertilizer that is cheap and easily available on the island of Lombok and has enough mineral content for the growth of lettuce plants.
Author Information:
Wawan Apzani, Agung Widya Wardhana, I Made Sunantra, Baharuddin, Zainal Arifin
Agrotechnology Study Program, Faculty of Agriculture, University 45 Mataram, Mataram, Indonesia
Key words: Water hyacinth, Trichoderma spp., Growth, Lettuce
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