Physical, Chemical, and Biological Maturity Parameters of Fish Waste Bokashi

Ikhsan Hasibuan, Prihanani Prihanani, Meylinda Puspitasari
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Abstract

Indonesia is the second greatest fish producer in the world after China with a total production of almost seven million tonnes in 2018. Meanwhile, Bengkulu is one of the provinces that are rich in fish resources. However, about 30-60% of fish produced is considered fish waste. Ikan rucah is small fish that has low or no economical value, thus it is regarded as a waste. Ikan rucah should be managed to avoid its negative effects on the environment. One of the options is by transforming it into organic fertilizer. Nevertheless, producing organic fertilizer by using fish waste is complicated since it will be easily rotten in futile fermentation. Thus, the objective of the research was aimed to evaluate the maturity of fish waste bokashi by using three parameters including physical, chemical, and biological aspects. The study had been carried out in the Laboratory of Agrotechnology, Faculty of Agriculture, University of Hazairin, Bengkulu in late 2020. The research was begun by preparing fish waste in three drying levels that were 85%, 70%, and 30% water content thus they were stated as fresh, medium, and dry fish waste, respectively. Each of those was then fermented in anaerobic methods for 2 and 3 weeks. The bokashi produced then analyzed in the physical, chemical, and biological characteristics. The results of this study confirmed that ikan rucah could be used as a source of organic material for organic fertilizer. Every treatment tested showed a good maturity level in physical parameters. Furthermore, the important findings were the high contents of main nutrients that were 1.5-5% and 4-5%, respectively for nitrogen and phosphorus. In addition, the biological maturity reached after 3 weeks of fermentation that confirmed germination index (GI) of about more than 100% or categorized as highly mature.
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鱼废博卡什的物理、化学和生物成熟度参数
印度尼西亚是仅次于中国的世界第二大鱼类生产国,2018年总产量近700万吨。同时,明古鲁是鱼类资源丰富的省份之一。然而,大约30-60%的鱼被认为是鱼类废物。Ikan rucah是一种小鱼,没有经济价值,因此被认为是一种废物。应该设法避免对环境产生负面影响。其中一个选择是将其转化为有机肥料。然而,利用鱼粪生产有机肥是一个复杂的问题,因为它很容易在无效发酵中腐烂。因此,本研究旨在通过物理、化学和生物三个方面的参数来评价鱼废博卡什的成熟度。该研究于2020年底在明库鲁哈扎林大学农业学院农业技术实验室进行。研究开始于准备三种干燥水平的鱼废物,含水量分别为85%,70%和30%,因此它们分别被称为新鲜,中等和干鱼废物。然后分别用厌氧方法发酵2周和3周。然后分析了所生产的博kashi的物理、化学和生物特性。本研究结果证实了核桃可作为有机肥的有机原料来源。每个处理在物理参数上都表现出良好的成熟度。主要营养成分氮、磷含量分别为1.5 ~ 5%和4 ~ 5%。另外,发酵3周后达到生物成熟度,确认萌发指数(GI)约为100%以上或属于高度成熟。
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发文量
25
审稿时长
16 weeks
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