Development of a Simple Bioponic Method Using Manure and Offering Comparable Lettuce Yield than Hydroponics

Using locally accessible organic materials as fertilizers in hydroponics can represent a sustainable alternative to the synthetic mineral typically used. This study aimed at developing simple bioponic method using chicken or goat manure on lettuce (Lactuca sativa var. Lucrecia) nutrient film technique, requiring few inputs. The first experiment compared solutions made from droppings and terms of physico-chemical parameters, plant yields, shoot content. Organic were produced two main stages before being used plants: (1) maceration water produce stock solution, followed by (2) an aerobic digestion filtrated diluted solution according total nitrogen (TMN). second different concentrations (60, 80, 100, 120 mg/L TMN) control solution. In experiment, both treatments resulted yields significantly lower than those control, probably due scarcity. all wet dry masses similar obtained with inorganic treatment. Produce quality was also improved, nitrate Important losses occurred during digestion, particularly treatment highly concentrated 2nd (~50–65% TMN losses). caused presence residual matter, which excessive microbial development. It be concluded that are suitable for hydroponic production this method; however, further research should carried out improve mineralization steps.