Evaluasi Kesesuaian Kualitas Berbagai Macam Pupuk Organik Padat Berdasarkan Peraturan Menteri Pertanian

Abstract

Organic fertilizers play an important role in soil properties and increasing plant productivity. Provisions regarding organic fertilizer quality standards have been regulated in the Regulation of the Minister of Agriculture of the Republic of Indonesia No. 261/KPTS/SR.310/M/4/2019 concerning organic fertilizers, biological fertilizers, and soil conditioners. Although the regulations have been established and approved, many organic fertilizer qualities still do not meet the requirements. This study aims to produce solid organic fertilizer quality based on applicable regulations. This study began with a survey and sampling of organic fertilizers spread across Java in solid form, granules, or crumbs. The parameters analyzed included shape, aroma, color, percentage of grain size, percentage of byproducts, volume weight, percentage of air content, pH value, percentage of organic carbon, percentage of Total-N, P2O5, and K2O nutrients, and Zn content in organic fertilizers. The results showed that three organic fertilizer samples, or 10.71% of 28 solid organic fertilizer samples, followed the applicable Regulation of the Minister of Agriculture No. 261/KPTS/SR.310/M/4/2019 The limiting factors of this unsuitability come from the variation of low and high water content percentage, high Zn concentration, high by-product content, low organic carbon percentage, high C/N ratio, low total percentage of suitable grain size, and low pH in solid organic fertilizer.