The need for yield research is increasing with the popularity of aquaponic food production systems where plants and fish are grown together in a recirculating system. Our objective was to compare the yield of three basil cultivars (“Elenora,” “Genovese,” “Nufar,” Ocimum basilicum) in four configurations (greenhouses: floating raft DWS, ebb & flow, A-frame; warehouse: floating raft; 1–8 tank replications/treatment) as well as a soilless control to establish a baseline for aquaponic producers in northern latitudes. We also tested whether basil yield varied among fish types: yellow perch, Perca flavescens, goldfish, Carassius auratus, tilapia, Oreochromis spp., and koi, Cyprinus carpio. Fish tank water temperature, nitrite, and alkalinity levels differed significantly over seasons (summer, winter). There was a significant decrease in basil production in all aquaponic systems that used koi (greenhouse, warehouse). No significant difference in basil yield was found among greenhouse and aquaponic systems for perch, tilapia, or goldfish nor among the basil “Elenora,” “Genovese,” and “Nufar.” Considerable variation occurred in yield although most of it occurred in fresh weights, being reduced significantly in dry weights. The effects of growing koi fish on reducing aquaponic production of basil is noteworthy, although future research is needed to the exact cause.

中文翻译：

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罗勒，罗勒，在北纬水培生长条件下的产量

随着植物和鱼类在循环系统中一起生长的鱼菜系统食品生产系统的普及，对产量研究的需求也在增加。我们的目标是比较三种罗勒品种（“Elenora”、“Genovese”、“Nufar”、罗勒罗勒）在四种配置（温室：浮筏 DWS、潮起潮落、A 型框架；仓库：浮筏； 1-8 缸重复/处理）以及无土控制，为北纬地区的鱼菜共生生产者建立基线。我们还测试了罗勒产量是否因鱼类而异：黄鲈、Perca flavescens、金鱼、Carassius auratus、罗非鱼、Oreochromis spp.和锦鲤、Cyprinus carpio. 鱼缸水温、亚硝酸盐和碱度水平随季节（夏季、冬季）显着不同。在所有使用锦鲤（温室、仓库）的鱼菜共生系统中，罗勒的产量都显着下降。在鲈鱼、罗非鱼或金鱼的温室和鱼菜共生系统中，罗勒“Elenora”、“Genovese”和“Nufar”的罗勒产量没有显着差异。产量发生了相当大的变化，尽管大部分发生在鲜重，干重显着降低。种植锦鲤对减少罗勒鱼菜共生生产的影响是值得注意的，尽管需要进一步研究确切原因。