H. Fitrihidajati, F. Rachmadiarti, Winarsih, T. Purnomo, S. Kuntjoro
The purposed of this research was 1) described the nutrient quality of organic fertilizer made from water hyacinth with the addition of corncobs waste and soybean dregs, 2) described the difference in quality of the organic fertilizer made from water hyacinth with the addition of corncobs waste and soybean dregs, 3) described the best quality from organic fertilizer made from water hyacinth with the addition of corncobs waste and soybean dregs. The method of this research was experimental with completely randomized design. The experiment consisted of one treatment factor namely the type of raw material water hyacinth which included three types, namely P1: with the addition of corncobs waste; P2: with the addition of soybean dregs; P3: with the addition of corncobs waste and soybean dregs (50%:50% ratio). Each type of treatment was carried out three times so that the sample amounted 9. The measured parameters were nutrient content included C, N, C/N, P, K, and pH. The research was conducted at the Ecology Laboratory, FMIPA, Unesa. Data was analysed by descriptively quantitative and statistically used 1-way Anava. The results showed that 1) Based on the criteria of soil chemical properties, organic fertilizer content has the same quality in elements C, N, K, C/N (very high), pH neutral, and P was very low, 2) There was a difference in the effect of the type of material on the amount of nutrient content of organic fertilizer, 3) Water hyacinth that addition with corncobs waste had a higher amount nutrient in several elements namely C, N, K, C/N. Whereas organic fertilizer with addition soybean dregs had a higher amount of content in the element P. © 2021 Published under licence by IOP Publishing Ltd.
Biology, FMIPA Universitas Negeri Surabaya, Ketintang Street, Gedung C3 Lt.2, Surabaya, Indonesia
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