Fish waste is a protein-rich source that can be used in the formulation of organic liquid fertilizers. This study carried out to investigate the utilizing potential of fruit wastes of Ananas comosus (Pine Apple) and Carica papaya (Papaya) that contain proteases to hydrolyze fish waste proteins to fulfill plant nutrient requirements. Liquid organic fertilizers were produced with hydrolyzed fish waste that enriched by adding Gliricidia sepium (Weta Hira), Chromolaena odorata (Podisingho maran), Tithonia diversifolia (Wild Sunflower), Mikania scandens (Wathu Palu) and coconut husk-ash. Fertilizers were tested on the growth of Basella alba (Nivithi) comparing with a standard fertilizer. Ananas comosus ripe fruit peels and the mixture of (A. comosus + C. papaya) showed the highest enzyme activities. Hydrolysis of fish waste using the fruit wastes of A. comosus and C. papaya could be effectively used as an organic fertilizer for the growth of B. alba that leads towards sustainable waste management.

R. H. A. A. Ranasinghe, B. T. S. D. P. Kannagara & R. M. C. S. Ratnayake 

International Journal of Recycling Organic Waste in Agriculture

Abstract :- http://ijrowa.khuisf.ac.ir/article_680065.html