The Influence of AB Mix Interaction and Substrate Media on the Growth and Yield of Hydroponic Cucumber

Abstract

Hydroponic cucumber cultivation using substrate is a promising modern farming alternative, but still faces challenges in managing growing media and nutrients. This study aimed to determine the best combination of substrate composition and AB Mix nutrient concentration for the growth and yield of hydroponic cucumbers (Cucumis sativus L.). The research was conducted in a greenhouse using a split-plot design with four types of growing media (100% cocopeat, cocopeat: rice husk charcoal 2:1, cocopeat: rice husk 2:1, and cocopeat: mushroom baglog waste 2:1) and four AB Mix concentrations (1000, 1200, 1400, and 1600 ppm). Observed variables included plant height, number and area of leaves, number of male and female flowers, fruit set, number and weight of fruits per plant, fruit diameter and length, total fresh and dry plant weight, and root volume. The results showed that combining cocopeat and rice husk charcoal (2:1) with 1600 ppm AB Mix produced the best outcomes in plant height, leaf number and area, fruit number and weight, fruit size, total dry weight, and root volume. This combination is the most effective and efficient for improving hydroponic cucumber yield using substrate and is recommended for broader application in sustainable farming systems.