Effects of organic foliar fertilizer concentrations on growth, yield and economic efficiency of malabar spinach and mustard greens

This study aimed to determine spraying concentrations of the organic foliar solution-Batraixanh Greco 01S for the production of malabar spinach and mustard greens in Spring in Gia Lam, Ha Noi. Two experiments with malabar spinach and mustard greens were arranged in a randomized complete block design with 5 treatments and 3 replications. In ech experiment, the treatments included 5 different spraying concentrations of the foliar solution (0, 2, 3, 4, 5 mL/L per each spray). The number of sprays for malabar spinach and mustard greens was 4 and 2 times, respectively, and the diluted solution for each spray was 1 L/m2. The results showed that the application of these solutions on malabar spinach and mustard greens significantly increased the growth and yield of these two leafy vegetables (P < 0.05). Malabar spinach sprayed with 3 - 5 mL/L per spray had the highest yield (15.38 - 16.70 tons/ha). The greatest yield of mustard greens was achieved with a spraying concentation of less than 3 mL/L (14.67 tons/ha). Malabar spinach and mustard greens sprayed with 3 mL/L gave the best profit margins of 1.24 and 1.59, respectively.