Effect of Organic Nutrient Solution on Water Spinach Grown in Non-circulating Hydroponics
Abstract
This study was conducted to determine the effects of five organic nutrient solution concentrations (0.5%, 1%, 2%, 3%, 4%) extracted from animal and plants with Knop’s solution as control, on water spinach grown in noncirculating hydroponics. The pot experiment was carried in green house. The pots were laid out in a randomized complete block design with three replications. The results showed that organic nutrient solution exerted positive effect on the growth, yield and quality of water spinach in whichconcentrations of 3% and 4% yielded highest yield. Organic
solution treatments showed higher quality compared with inorganic solution treatment (Knop’s solution), i.e. NO3 - content was nearly 6 times lower compared with the control, while level was significantly higher. The results suggested that organic solution concentrations of 3% and 4% are suitable for growing water spinach in noncirculation hydroponic method.