Remediation of Flow‐Through Trout Raceway Effluent via Aquaponics

Buzby, Karen M.; West, Todd P.; Waterland, Nicole L.; Lin, Lian-Shin

doi:10.1080/15222055.2016.1221010

Cited by 8 publications

(10 citation statements)

References 24 publications

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“…Even though low level of nutrient was provided through FTS, constant supply of those nutrients might have helped lettuce to grow without any nutrient deficiency symptoms. However, nutrient removal was observed in the previous report in an FTS (Buzby et al, 2016b). This discrepancy could be nutrient compensation effect of nutrients generated from the solids accumulated at the bottom of the channels.…”

Section: Nutrient Removalcontrasting

confidence: 38%

“…The feasibility of lettuce production in a cold water FTS has been demonstrated (Buzby et al, 2016b). However, an efficient harvest method to increase lettuce yield has not been evaluated.…”

Section: Se Average Yield and Productivitymentioning

confidence: 99%

“…Not all crops can be harvested by the CC method in FTS. Other vegetables such as Swiss chard, herbs and cilantro would also be good candidates for FTS production using the CC method combined with the OD method (Buzby, Waterland, Semmens, & Lin, 2016a;Buzby et al, 2016b;Rakocy, Bailey, Shultz, & Thoman, 2004). Note.…”

Section: Se Average Yield and Productivitymentioning

confidence: 99%

“…The solids might have decayed and released nutrient to compensate for the amount of nutrient removed by lettuce, resulting in no apparent removal. In the experiment performed by Buzby et al (2016b), the accumulated solids were removed prior to water analysis.…”

Section: Nutrient Removalmentioning

confidence: 99%

“…As a cool season crop, lettuce is a good candidate for production in a cold water FTS. The cultivar 'Red Sails' was selected in this study because it performed well in previous study utilizing an FTS (Buzby & Lin, 2014;Buzby, West, Waterland, & Lin, 2016b).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Two Harvest Methods for Lettuce Production in an Aquaponic System

Johnson¹,

Buzby²,

Semmens³

et al. 2016

JAS

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Aquaponics is an integrated food production technology of aquaculture and hydroponics. Lettuce (Lactuca sativa L.) is an economically important vegetable crop that can be grown aquaponically. In addition to selecting the right choice of lettuce cultivars, developing an optimal harvest strategy could increase lettuce production. Lettuce production using two harvest methods, Cut-and-Come-Again (CC) and Once-and-Done (OD), was evaluated using 'Red Sails' lettuce in a flow-through aquaponic system rearing trout. With the CC method continual harvesting was possible on a weekly basis after the initial harvest, while it took five weeks for each harvest using the OD method. The total yield of lettuce by the CC method was 6.7 kg from 9 trays, while 22.6 kg of lettuce was harvested by the OD method using 54 trays. In harvests by the OD method, 6 times as many seeds were sown compared to the CC method. The average yield per tray harvested by the CC method (744.4 g/tray) was 78% higher than that by the OD method (418.5 g/tray) because the CC method used 6 times less trays. Productivity, calculated by the average yield per growing week, of the two harvest methods at the first harvest was similar, but 4.8 times higher in the CC method than in the OD method at the second harvest due to the shorter harvest time. However, visual and decay ratings of lettuce harvested by the CC method began to decline afterwards. Together, the OD method after two consecutive harvests by the CC method would help growers to obtain increased yield of quality lettuce.

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Section: Nutrient Removalcontrasting

confidence: 38%

Section: Se Average Yield and Productivitymentioning

confidence: 99%