Study on the effect of adding nutrients on fermentation of compost tea

¹ Agricultural college of Yanbian University, Yanji, Jilin, 133002, P.R. China
² Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University

^* Corresponding author’s e-mail: gcli@ybu.edu.cn

Abstract

The study investigated the effects of additives (molasses, seaweed, and fishmeal) on compost tea's nutrient content and fermentation characteristics. Compost tea contains a lot of nutrients and can be used as a supplement for soil nutrients. Molasses, seaweed and fishmeal are common additives in compost tea, and their effects on nutrients in compost tea are the purpose of this study. In this paper, to study the compost tea with added nutrients molasses, seaweed, and fishmeal compost tea, the effects of pH, organic matter, total nitrogen, ammonium nitrogen, nitrate nitrogen and bacteria on the fermentation characteristics of compost tea were investigated with different ratios (1 : 5, 1 : 6, 1 : 7, 1 : 8, 1 : 9) of fertilizer to water. The results showed with the increase of extraction ratio, molasses decreased pH value and ammonium nitrogen content, and seaweed and fishmeal promoted nitrogen mineralization. The optimal fermentation ratio was 1:5 for compost tea.