Organic Liquid Fertilizers

Aim: To develop a manual for developing an organic liquid fertiliser to be used in bioponics systems through anaerobic and aerobic fermentation techniques, and to analyse the composition of the finished products based on different “recipies” and test their performance in systems. Also to develop plans for building biofilters and vortex aerators to be used in production of fertilizers. Test the product produced by different plants.

Why it’s important: Developing a documented way of making organic liquid fertilizer is essential in helping permaculturists and horticulturalists worldwide stop using petrochemical fertilizers and revert to a more efficient biological processes. Besides their use in more conventional forms organic agriculture these fertilizers can also be used in organic hydroponics systems, or for growing algae such as spirulina or chlorella. The method is also be a solution to the terrestrial problem of Peak Phosphorous, wherein there is a limited entrance of phosphorous into the terrestrial biosphere, while modern agriculture, land and waste management ensures phosphorous is continually being drained into fluvial then marine ecosystems.

How it works: Many types of anaerobic and aerobic organisms found in soil aid in converting organic and inorganic matter into forms that plants can directly use for nutrition. Different organic bio-fertilisers can be made from grass clippings, comfrey, clover, urine, rock-phosphates and wood ash by processing with anaerobic and then aerobic fermentation and inoculating with probiotic microorganisms. We can create the conditions required for these processes to occur producing an organic fertilizer containing all the necessary nutrients and minerals needed to support healthy plant growth.

Brief Outline of Process: Organic matter is shredded and fermented in sealed drums for a period of time so that anaerobic fermentation occurs and the cell walls of the plant matter are broken down. The water is then passed through a filter and a pump recirculates the water through a vortex aerator aerating the water and creating the correct conditions for aerobic fermentation. After a period of time the nutrients in the plant matter have been broken down into a form that the plants can directly use.

Equipment/parts needed: Plastic barrels, Pumps, and airpump and airstones, shredder rental or buy, NPK + pH Testing Kit, EC meter, pH probe, scales, “Mammoth” brand probiotic microbes, effective microorganisms

Time: 50 hours Construction and testing, 50 hours writing the manual/documenting the complete process

Experiments: Test the fertiliser produced for NPK values, pH values, EC values, magnesium