Producció d'enciam sota condicions d'aeroponia i fertilització amb purins

Pig slurry represents an environmental challenge and an opportunity within the circular economy, which is why the objective of this study has been to determine whether fertilization with nutrient solutions derived from pig livestock waste can be considered an agronomically efficient option for the cultivation of lettuce (Lactuca sativa L.) in aeroponic systems. To achieve this objective, an experimental trial was conducted using three independent aeroponic towers with a control solution and two solutions based on treated slurry - one filtered (PF) and another filtered and ozonated (PFO) - aiming to evaluate their effects on production, quality, and the nutritional composition of three lettuce varieties. The study made it possible to analyze agronomic parameters such as fresh weight, root and leaf length, as well as chlorophyll content and the mineral composition of the plant material, and also to compare the chemical characteristics of the nutrient solutions used. The results obtained show that although the use of treated slurry is technically viable and does not cause drastic effects on the crop, differences were detected in some productive parameters and in mineral composition, especially in phosphorus, potassium, and nitrogen forms. These differences indicate that it is necessary to adjust the formulation of the treated slurry solutions to ensure complete fertilization and to guarantee that these solutions can be a real alternative to conventional fertilization, since, with the concentrations tested, they still cannot fully replace the mineral solution without risking reduced productivity or crop quality. ; Els purins porcins representen un repte ambiental i una oportunitat dins de l'economia circular, motiu pel qual l'objectiu d'aquest treball ha estat determinar si la fertilització amb solucions nutritives derivades de dejeccions ramaderes porcines pot considerar-se una opció agronòmicament eficient per al cultiu d'enciam (Lactuca sativa L.) en sistemes aeropònics. Per assolir aquest objectiu, s'ha dut a ...