Irrigação sustentável : reúso de efluente de piscicultura em horta escolar

Abstract

This study evaluated the effect of irrigation with fish farming effluent on the cultivation of chives (Allium fistulosum L.) and tomatoes (Solanum lycopersicum L.) in a school garden in Cuiabá, MT. The experiment was conducted from October to December 2022, using two 6m x 2m beds, where 120 chive seedlings and 24 tomato seedlings were transplanted. The plants were irrigated daily with different dilutions of effluents (0.25%, 75%, 50% and 100%) for the cultivation of chives and tomatoes (0%, 25%, 50% and 100%) from a water tank. fish farming with Tambaqui fingerlings (Colossoma macropomum). Plant growth analyses, carried out biweekly, indicated that 100% dilution of the effluent promoted greater growth of chive leaves. In tomato cultivation, 50% dilution resulted in slightly taller plants, while 100% dilution favored greater fruit production in terms of quantity and total dry mass. Irrigation with conventional water presented the lowest values for most of the parameters evaluated, highlighting the efficiency of fish farming effluents in promoting plant growth. These results suggest that the use of fish farming effluents can be a sustainable and beneficial practice for agriculture, increasing crop productivity and quality.