A 90-day experimental trial was conducted to evaluate the effect of foliar potassium application with aquaculture wastewater on the growth performance of okra and Pangasianodon hypophthalmus in a media-based recirculating aquaponic system. A completely randomized design (CRD) in triplicates was followed with a fish to plant ratio of 4.7 kg/m³: 6 okra plants per tank. The potassium dosages of 0, 2, 3, 4, and 5 g/L were applied twice a month in control, T1, T2, T3, and T4, respectively. The water quality parameters remained within the favorable limit for aquaponic production. The results showed that the overall growth of okra viz., plant height, leaf number, length, and width was significantly higher in the treatments, particularly in T3 and T4 compared to other treatments and the control. The treatment T4 showed the significantly highest yield (31.26±0.78 g/plant) compared to the control (7.25±1.30 g/plant). The okra yield, pod number per plant, and average weight per pod were significantly influenced by potassium dosage with the highest value observed in T3 (4 g/L) and T4 (5 g/L). The potassium dosage also impacted the branching pattern of okra with the highest number of branches observed in plants sprayed with 4 g/L (T3) and 5 g/L (T4) while control showed no branching. The proximate and mineral composition showed significantly higher crude protein (13.57±0.32%) and potassium content (2306.70±37.76 mg/100 g) in okra pods in T4; while potassium and sulfur content of leaves was found to increase with the increased dosage of potassium application. The fish growth, hematological and antioxidant enzymes parameters showed no significant difference in all the treatments and control. The present study recommends a 5 g/L foliar potassium dosage to enhance okra growth and yield without impairing fish growth performance in okra-P. hypophthalmus aquaponics.

进行了一项为期 90 天的实验试验，以评估叶面钾肥与水产养殖废水对基于培养基的循环水培系统中秋葵和Pangasianodon hypophthalmus生长性能的影响。采用一式三份的完全随机设计 (CRD)，每罐鱼与植物的比例为 4.7 kg/m ^{3 : 6 秋葵植物。}在对照、T1、T2、T3 和 T4 中，钾的剂量分别为 0、2、3、4 和 5 g/L，每月两次。水质参数保持在鱼菜共生生产的有利限度内。结果表明，黄秋葵的整体生长.，与其他处理和对照相比，处理中的株高、叶数、长度和宽度显着增加，特别是在T3和T4中。与对照（7.25±1.30 g/植物）相比，处理T4显示出显着最高的产量（31.26±0.78 g/植物）。钾剂量对秋葵产量、每株豆荚数和每豆荚平均重量有显着影响，在 T3 (4 g/L) 和 T4 (5 g/L) 观察到的值最高。钾剂量也影响秋葵的分枝模式，在喷洒 4 g/L (T3) 和 5 g/L (T4) 的植物中观察到的分枝数量最多，而对照显示没有分枝。T4黄秋葵的近端矿物成分显示出明显较高的粗蛋白（13.57±0.32%）和钾含量（2306.70±37.76 mg/100 g）；叶片钾、硫含量随施钾量的增加而增加。鱼的生长、血液学和抗氧化酶参数在所有处理和对照中均无显着差异。本研究建议叶面施钾量为 5 g/L，以增强秋葵的生长和产量，同时不影响秋葵中鱼类的生长性能。P. hypophthalmus鱼菜系统。