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标题：Effects of different growth media on water quality and plant yield in a catfish-pumpkin aquaponics system
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作者：A.S. Oladimeji ; S.O. Olufeagba ; V.O. Ayuba 等
期刊名称：Journal of King Saud University - Science
印刷版ISSN：1018-3647
出版年度：2020
卷号：32
期号：1
页码：60-66
DOI：10.1016/j.jksus.2018.02.001
语种：English
出版社：Elsevier
摘要：AbstractAquaponics production of fish and plant is one of the environmentally sustainable farming methods of the twenty-first century. In this study, two agricultural wastes (Palm kernel shells aka PKS and Periwinkle shells aka PWS) were evaluated for their suitability as growth beds in the propagation of pumpkinTelfairia occidentalis.In addition, conventionally used gravel and its mixture with PKS and PWS (33.33% each) were also tested. The resultant effects of these treatments on water quality of the system were reported. The result obtained reveals better performance of pumpkin in the PKS and PWS medias in terms of vine length, leave area, leave number, branch number and bi-weekly plant yield. The least performance was observed in the plants propagated in the gravel substrate. Water quality and percentage nitrogenous compound reduction (NH3,NO2and NO3) across the system and in the different grow beds suggests that mixing all substrate resulted in better water qualities for fish and plant growth. Aside the superior growth observed in this study, alternative uses of these agricultural by-products in aquaponics system is highly recommended because of the possibility of converting waste to wealth.
关键词：Hydroponics;Grow media;African catfish;Vegetables