COMPARING NUTRIENT MANAGEMENT STRATEGIES IN DECOUPLEDAQUAPONICS SYSTEMS FOR GROWING Cannabis sativa

Aquaponics Pub Date : 2024-01-05 DOI:10.59411/0f9wbx67

Jessie Johnson, Matthew Recsetar

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Abstract

Aquaponics is an integrative aquaculture system that uses waste produced by farmed aquatic animals to supply nutrients to a hydroponic system for growing plants. The growth of Cannabis sativa in aquaponic systems displays the potential for well-managed aquaponic systems to produce a variety of crops. In this study, we examined the impact of nutrient management techniques on the growth of Cannabis sativa in a decoupled aquaponic system. Four treatments were assessed: (1) recirculating treatment using aquaponic system effluent plus nutrient supplementation (AqRN), (2) flow-through treatment with aquaponic system effluent (AqFT), (3) flow-through hydroponic treatment with aquaponic effluent supplementation (10% by volume) (AqHydro), and (4) flow-through hydroponic control treatment (Hydro). The results indicated that the AqFT and AqHydro systems provided comparable yields to the hydroponic system, while the AqRN treatment exhibited reduced trimmed yield with signs of plant stress and nutrient deficiency appearing toward the end of the trial. AqFT produced fewer terpenes than the other treatments and may benefit from micronutrient supplementation. AqHydro and Hydro treatments displayed no significant difference in water quality or yield. Notably, AqHydro treatment showed reduced water consumption, underscoring the potential for aquaculture effluent supplementation to cost-effectively enhance fertigation in hydroponic systems.

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比较用于种植大麻的净化水质系统中的营养管理策略

鱼菜共生是一种综合水产养殖系统，它利用养殖的水生动物产生的废物为水耕系统提供养分，以种植植物。大麻在鱼菜共生系统中的生长表明，管理良好的鱼菜共生系统具有生产多种作物的潜力。在这项研究中，我们考察了养分管理技术对脱钩水生栽培系统中大麻生长的影响。我们评估了四种处理方法：(1) 使用水生植物系统污水加营养补充的循环处理（AqRN），(2) 使用水生植物系统污水的流经处理（AqFT），(3) 使用水生植物污水补充（10% 体积）的流经水耕处理（AqHydro），以及 (4) 流经水耕对照处理（Hydro）。结果表明，AqFT 和 AqHydro 系统的产量与水培系统相当，而 AqRN 处理的修剪产量则有所下降，在试验末期出现了植物应激和养分缺乏的迹象。与其他处理相比，AqFT 产生的萜烯较少，可能得益于微量营养元素的补充。AqHydro 和 Hydro 处理在水质和产量方面没有明显差异。值得注意的是，AqHydro 处理的耗水量有所减少，这说明补充水产养殖废水可以经济有效地提高水培系统的施肥效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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