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

Abstract

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.