Potensi dan Efektivitas Limbah Cair Industri Tahu Sebagai Pupuk Organik Cair Terhadap Pertumbuhan Cabai dan Tomat

Abstract

Most of the tofu industries in Jombang dump their waste directly into the river. This causes discolouration
of the river and unpleasant odours. High organic content in the water can reduce dissolved oxygen (DO)
levels and increase pollutant parameters that can harm the environment. Waste recycling can be a way to
reduce pollution. With a high organic content, tofu liquid waste has great potential as a fertiliser. The
addition of EM4 bioactivator in the production of fertiliser can help the fermentation process with the aim
of improving the quality of soil structure. This study aims to determine the potential and effectiveness of
liquid organic fertilizer produced from tofu liquid waste. The research method used was a field experiment
with a quantitative approach. The experiment starts with the production of liquid organic fertilizer from
tofu liquid waste, which is then applied to chilli (Capsicum frutescens L) and tomato (Solanum
lycopersicum L) plants, and there is a control (no treatment or fertilizer) for comparison. The observation
results show that the liquid organic fertilizer (POC) from tofu liquid waste is very influential on the growth
of chilli and tomato, especially in the vegetative period.