Liquid Organic Fertilizer Production From Kersen Leaves (Muntingia Calabura L.) And Eggshells With Addition Of Spoiled Rice Local Microorganism (Mol) Bioactivator

Abstract

Organic fertilizer are fertilizer that work in increasing the biological, chemical and physical activities of the soil so that the soil becomes fertile and good for plant growth. Kersen leaves and eggshells are materials that can be used as liquid organic fertilizer because they contain various types of ions such as nitrogen (N), phosphorus (P), potassium (K), magnesium (Mg) and calcium (Ca) ions. The production of liquid organic fertilizer is carried out using an anaerobic fermentation process. This study aims to obtain the optimum conditions for the volume of spoiled rice MOL bioactivator (30, 50, and 70 ml) and fermentation time (7, 12, and 18 days) to produce liquid organic fertilizer with the best quality. Parameters observed in the production of liquid organic fertilizer are nitrogen content, phosphorus content, potassium content (NPK), pH and color and scent. The results of the best quality liquid organic fertilizer were obtained in the 50 ml addition of spoiled rice MOL. The optimum fermentation time for nitrogen and potassium content was obtained on the 18th day, 0.01296% N and 0.2947% K2O, phosphorus content obtained on the 12th day is 0.8928% P2O5, with the pH value of 6, dark brown and odorless.

Quality of Physical and Chemical Properties of Liquid Organic Fertilizer from Tofu Liquid Waste with Banana Hump Mol Decomposer

“…0.0078% [10]. Meanwhile the Phosphor (P2O5) content in liquid organic fertilizer from kersen leaves and eggshells with the addition of 50 ml spoiled rive local microorganism bioactivator was 0.8928 % [11].…”

“…and the mixture of two types of seaweed, namely 0.56% and 0.67% [10]. Meanwhile, the Nitrogen content in liquid organic fertilizer from kersen leaves and eggshells with the addition of 50 ml spoiled rive microorganism bioactivator was 0.01296% [11].…”

“…On the seventh day, the fermentation process has undergone a pungent odor change, while on the tenth day, the odor has changed to sour until the end of the fermentation. The aroma of liquid organic fertilizer between smell not pungent and strong smell [11].…”

“…Based on the requirements for liquid organic fertilizer from the Decree of the Minister of Agriculture of the Republic of Indonesia concerning Minimum Technical Requirements for Organic Fertilizers, Biological Fertilizers, and Soil Improvement which states that the total N+P2O5+K2O is 2-6%(w/v) [12]. Some studies showed the potassium value of some liquid prganic fertilizer range 0.33-0.68% [10], and 0.02-0.04 % [11].…”