Formulation of New Biostimulant of Plant and Soil Correction Based on Humic Acids Extracted by Magnetized Water from Compost from the Waste of Coffee Marc and Cattle Manure

Purpose Humic acids and fulvic acids are the essential components of the organic matter found in the compost. They are found in the form of a complex biopolymer resulting from the decomposition of organic matter. They have several advantages on the ecosystem, flora and fauna. They are considered to be bio stimulating molecules. They have a positive influence on pedology, germination and plant growth. The main goal of this study is to determine the best conditions for extracting a greater amount of organic matter (OM), humic acids (HA) and fulvic acids (FA) from the compost formulated from cattle manure and marc of coffee with a new method. Method In this article we compared various results of the extraction of organic matter, humic acids and fulvic acids by magnetized water and tap water for different concentrations of KOH different extraction times. Results The best result obtained with a KOH extraction (0.5 N) for 2 h with water magnetized at room temperature on a laboratory and pilot scale. Organic matter, humic and fulvic acids were measured by the ANNE method. Conclusions The results show that compost is a source of humic substances, which can be considered as an alternative biostimulant to chemical fertilizers to preserve the environment. Graphic Abstract