Tomato Transplant Growth Experiment by Dr. Jason Danaher
Published on Feb 1, 2016

Tomato seedling growth response to different water sources and a substrate partially replaced with dewatered aquaculture

The purpose of this peer-reviewed experiment by Dr. Jason Danaher, Jeremy Pickens, Jeffrey Sibley, Jesse Chappell, Terrill Hanson, and Claude Boyd was performed to determine the effect a commercial potting mix partially replaced with dewatered aquaculture effluent had on tomato transplant growth. 

This open source article was published in the International Journal of Recycling of Organic Waste in Aqriculture. 

Introduction: Aquaculture is one of the fastest growing sectors of agriculture. A decline in capture fisheries, coupled with a strong consumer-driven demand for aquaculture products, has resulted in the adoption of intensive fish production facilities. Aquaculture farms have intensified and require solutions to manage discharged wastes. Recirculating aquaculture systems (RAS) have incorporated water treatment technology to manage toxic dissolved nutrients and solid waste. This technology allows the producer to maximize production per unit area and reuse limited freshwater resources. The RAS technology is used to produce popular food species like Nile tilapia (Oreochromis niloticus; Azim and Little 2008). To ensure water quality remains optimal for the fish, a RAS discharges concentrated organic matter and dissolved wastes daily. Even though the point of discharge is well defined, the concentrated organic matter and dissolved nutrients are still a liability for the producer. Effluent leaving production facilities is regulated by environmental agencies (Ebeling et al. 2005). Capturing and treating discharged wastes on-site would help intensive aquaculture production facilities address waste management regulations and prevent eutrophication.

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