By-Product from Livestock Waste Recovery System Used as Fertilizer: Bioactive Compounds and Antioxidant Activity of Tomato Fruit as Affected by Fertilization under Field and Greenhouse Conditions

Conversion of livestock manure into organic fertilizer is a sustainable strategy in crop production. In contrast to composted manure, the agronomic characteristics an anaerobic digestion by-product, digestate, have not been well characterized. This study aimed investigate effects digestate and compost, derived from pilot-scale waste recycling system, on bioactive compounds tomato fruits. Both field greenhouse experiments were conducted compare these two fertilizers with application chemical fertilizer. These comparisons made by evaluating their influence yield compound contents antioxidant activity The experiment included control (no fertilizer) three fertilization treatments same nitrogen dose: fertilizer, compost. results revealed that compost yielded similar terms production, surpassing both group under conditions. Fertilization exhibited significant capacity Furthermore, led increase concentration sugars, phenolic compounds, several acids fruits while simultaneously reducing citric acid levels comparison treatment. Moreover, improved total phenol flavonoid fruits, was significantly higher than conclusion, or system reduced use resulted yields fruit considerably superior compounds. suggested using as alternative inorganic for cultivation could assist farmers increasing productivity, improving content fruit, promoting agricultural management.