Transforming waste to value: exploring potential of different organic fertilizer extracts as supplement mineral nutrients in aquaculture wastewater towards sustainable production of Channa striata (Bloch, 1793) and Lactuca sativa L. aquaponics
{"title":"Transforming waste to value: exploring potential of different organic fertilizer extracts as supplement mineral nutrients in aquaculture wastewater towards sustainable production of Channa striata (Bloch, 1793) and Lactuca sativa L. aquaponics","authors":"Venisza Cathy John, Ajit Kumar Verma, Kishore Kumar Krishnani, Sukham Munilkumar, Tincy Varghese, Chandrakant Mallikarjun Hittinahalli, Akhila S.","doi":"10.1007/s10499-025-01943-8","DOIUrl":null,"url":null,"abstract":"<div><p>The expediency of inorganic fertilizer supplementation attributed to the need for synchrony between nutrient requirement of plants and fish is a customary practice, while the utilization of organic fertilizers as a sustainable approach to amend aquaponics production remained largely unexplored. A 90-day trial investigated the feasibility of employing organic fertilizer extract as a supplement to aquaculture wastewater of <i>Channa striata</i>-lettuce aquaponics. Extracts of different organic fertilizers, viz., vermicompost (28.8 mg/L), cow manure (50 mg/L), chicken manure (50 mg/L) and black soldier fly larvae frass (3.3 mg/L) were applied weekly in T1, T2, T3 and T4, respectively and compared to control (C). The water quality varied within tolerable limits for cultured species for most parameters. The supplementation did not induce significant (<i>p</i> > 0.05) changes in the growth performance of fish, while an alteration in normal physiological response was observed in T3 and T4. The antioxidant stress enzymes in the liver exhibited a significant difference in T3, while variation was insignificant in gill. Total lettuce yield (of all three harvests at 30-day interval) followed the order: T1 (1111.88 ± 4.90 g) > T2 (865.87 ± 4.95 g) > T4 (778.63 ± 5.34 g) > T3 (768.67 ± 3.30 g) > C(729.83 ± 7.18 g). Proximate analysis revealed a significant increase in crude protein in T1 (1.59 ± 0.12%), and enrichment of nutrient content of lettuce leaves was perceived in treatments than control. The results indicated that all organic fertilizer extract supplementation performed optimally rendering improved production than control during the study, while vermicompost outperformed significantly in lettuce yield, proximate and mineral composition, and fish physiology, and hence recommended as best feasible for aquaponics.\n</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 4","pages":""},"PeriodicalIF":2.2000,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Aquaculture International","FirstCategoryId":"97","ListUrlMain":"https://link.springer.com/article/10.1007/s10499-025-01943-8","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"FISHERIES","Score":null,"Total":0}
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Abstract
The expediency of inorganic fertilizer supplementation attributed to the need for synchrony between nutrient requirement of plants and fish is a customary practice, while the utilization of organic fertilizers as a sustainable approach to amend aquaponics production remained largely unexplored. A 90-day trial investigated the feasibility of employing organic fertilizer extract as a supplement to aquaculture wastewater of Channa striata-lettuce aquaponics. Extracts of different organic fertilizers, viz., vermicompost (28.8 mg/L), cow manure (50 mg/L), chicken manure (50 mg/L) and black soldier fly larvae frass (3.3 mg/L) were applied weekly in T1, T2, T3 and T4, respectively and compared to control (C). The water quality varied within tolerable limits for cultured species for most parameters. The supplementation did not induce significant (p > 0.05) changes in the growth performance of fish, while an alteration in normal physiological response was observed in T3 and T4. The antioxidant stress enzymes in the liver exhibited a significant difference in T3, while variation was insignificant in gill. Total lettuce yield (of all three harvests at 30-day interval) followed the order: T1 (1111.88 ± 4.90 g) > T2 (865.87 ± 4.95 g) > T4 (778.63 ± 5.34 g) > T3 (768.67 ± 3.30 g) > C(729.83 ± 7.18 g). Proximate analysis revealed a significant increase in crude protein in T1 (1.59 ± 0.12%), and enrichment of nutrient content of lettuce leaves was perceived in treatments than control. The results indicated that all organic fertilizer extract supplementation performed optimally rendering improved production than control during the study, while vermicompost outperformed significantly in lettuce yield, proximate and mineral composition, and fish physiology, and hence recommended as best feasible for aquaponics.
期刊介绍：
Aquaculture International is an international journal publishing original research papers, short communications, technical notes and review papers on all aspects of aquaculture.
The Journal covers topics such as the biology, physiology, pathology and genetics of cultured fish, crustaceans, molluscs and plants, especially new species; water quality of supply systems, fluctuations in water quality within farms and the environmental impacts of aquacultural operations; nutrition, feeding and stocking practices, especially as they affect the health and growth rates of cultured species; sustainable production techniques; bioengineering studies on the design and management of offshore and land-based systems; the improvement of quality and marketing of farmed products; sociological and societal impacts of aquaculture, and more.
This is the official Journal of the European Aquaculture Society.
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