Ảnh hưởng của nồng độ dung dịch dinh dưỡng đến sinh trưởng và năng suất dưa gang trồng thủy canh tĩnh: Effect of nutrient solution concentration on the growth and yield of melon grown in static hydroponics

Abstract

The study was conducted from July to September 2024 at Can Tho University, with the objective of determining the appropriate nutrient solution concentration for the growth and yield of melon grown in static hydroponic system. The experiment was arranged in a completely randomized design with four treatments corresponding to four nutrient solution concentrations (900 ppm, 1,200 ppm, 1,500 ppm, and 1,800 ppm) and six replications. The results showed that the different nutrient solution concentrations did not significantly affect plant height, number of leaves, leaf size, or stem diameter. However, the 1,200 ppm treatment produced the highest values in fruit height (13.8 cm), fruit diameter (14.1 cm), and fruit weight (1,085 g). In contrast, the 1,800 ppm treatment resulted in the lowest values for fruit diameter, fruit circumference, flesh thickness, and fruit weight (541 g). There were no significant differences in brix level and vitamin C content in the melon flesh among the four nutrient solution concentrations. In melon cultivation using the static hydroponic method, a nutrient solution with a concentration of 1,200 ppm can be used to promote good plant growth and yield.