Effects of organic fertilizers produced from fish pond sediment on growth performances and yield of Malabar and Amaranthus vegetables

The increasing intensification of aquaculture production requires the development strategies to reduce its environmental impacts such as pollution caused by discharge nutrient-rich sediments into local water bodies. This research was undertaken investigate and evaluate effect using organic fertilizers produced from pond sludge freshwater snakehead fish ( Channa striata ) composted with amendments peanut shells coir fiber on growth performance indices yields Malabar spinach Basella alba L.) Amaranthus cruentus vegetables in dry wet seasons. An fertilizer quality experiment showed that richest nutrient contents were achieved when 30% mixed 70% (50% + 50% fiber). selected used for a vegetable cultivation experiment. For reference treatment, only chemical applied, while other four treatments, 25, 50, 75, 100% substituted fertilizer. A 25–50% reduction application resulted better final than including both crops. highest found Treatment 3 combined fertilizer), followed 2 (25% 75% inorganic fertilizer) P < 0.05). results show reuse ponds agricultural by-products not improves productivity but also reduces costs decreases pollution.