Krishna, you can obtain water extract of different natural organic fertilizer. There are some liquid ones you can find in the market. There is one problem - you must make complete chemical analysis of such fertilizer before your experiments - they differ much even in main componens fro stock to stock even with the same lable.
Unicellular plant organism i.e. unicellular alga; generally utilized inorganic nutrient so that I want to provide this nutrient from organic fertilizer. It was the reason for asking this question.