STUDY ON THE EFFECTS OF THE RATE OF ADDING VERMICOMPOST TO THE PLANTING MEDIUM ON GROWTH AND DEVELOPMENT OF Cucumis melo L. IN NETHOUSES IN NINH THUAN PROVINCE

Abstract

The experiment was carried from december 2024 to february 2025 to evaluate the effect of the rate of adding vermicompost to the growing medium on the growth, yield, quality and economic efficiency of Huynh Long melon grown in nethouses in Ninh Thuan province. The experiment was arranged in a completely randomized block design with 5 treatments: (1) No vermicompost (control), (2) 10% vermicompost, (3) 20% vermicompost, (4) 30% supplementation, (5) 40% supplementation and 3 replications. The results showed that melons grown with the formula of adding 30% vermicompost to the substrate had the best growth ability compared to the remaining formulas with a growth period of 78 days, fruit length of 23.2 cm; fruit diameter of 15.2 cm; average fruit weight of 1.75 kg, yield of 3,840 kg/1,000 m²; the rate of grade 1 fruit reached 87%; Brix level of 16.1% and economic efficiency reached 33,289 million VND/1,000 m².