การศึกษาคุณลักษณะของเสียอินทรีย์จากกระบวนการผลิตซูริมิเพื่อใช้เป็นปุยน้ำหมักชีวภาพ

Abstract

Evaluation of growth performance of green oak lettuce (Lactuca sativa) in hydroponics cropping dual system, Dynamic Root Floating Technique (DRFT) and Flood and Drain (FAD) tested by 3 types bio-fertilizer from organic waste of surimi production was investigated in terms of characteristics of organic waste, bio- fertilizer production, and the growth rate evaluation of green oak lettuce. The objective of this study is to improve the value of organic waste by producing bio- fertilizer and using bio-fertilizer from fish waste replacing the chemical fertilizers. The study indicated that Purple-spotted big-eye (Priacanthus tayenus) and Threadfin Bream fish (Nemipterus hexodon) provide a good feature in the production of bio- fertilizer than lizardfish (Saurida undosquamis) with humidity at 76.45% and 74.38%, respectively. The bio-fermented fertilizer was produced under fermentation process for 21 days. Threadfin Bream fish fermentation fertilizer presented in key nutrient content in terms of total Nitrogen, total P2Os, and total K2O at the highest component of about 1.32, 0.50 and 0.45%w/w, respectively which is closed to fertilizer from the Purple-spotted big-eye fish fermentation, of about 1.28, 0.47 and 0.38%w/w, respectively. The pilot test of the growth performance of green oak lettuce in the hydroponics kit was operated in a controlled environment system and compared with the chemical fertilizer. It was found that the number of leaves, height, width of bush and root length of green oak lettuce from Purple-spotted big- eye and Threadfin Bream fish fermentation fertilizer after 35 day cultivation showed similar growth rate number of leaves is 7.78±1.79, 7.67±1.58 leaves, height is 9.82+3.18, 9.31+2.56 cm, width of bush is 11.76±4.48, 10.12±3.42 cm and root length is 4.28±0.40, 4.27±0.36 cm, respectively. The average dry weight of green oak lettuce from A+B chemical fertilizers and the fermentation fertilizer from three fish species was 9.07±0.88, 0.07±0.03, 0.53±0.33 and 0.49±0.32 g, respectively. This finding exhibited that the Purple-spotted bigeye and Threadfin Bream fish fermentation fertilizers are more effective than lizardfish fermentation fertilizer for green oak lettuce growth, however, using bio-fermented fertilizer substituted chemical fertilizer is difficult to provide high performance as same as commercial chemical fertilizer. Therefore, nutrient improvement was required to develop organic fertilizer from fish waste as value added in organic waste management for hydroponics crops for further s