STUDY ON PRUNING HEIGHTS ON GROWTH, DEVELOPMENT AND BIOMASS YIELD OF MORINGA (MORINGA OLEIFERA M.) IN HOME GARDEN AT THUA THIEN HUE CITY
In this study, we conducted an experiment to evaluate pruning heights on growth, development and biomass yield of Moringa. Total of five treatments of pruning heights such 45 cm from the soil surface (CT 1), 55 cm from the soil surface (CT 2), 65 cm from the soil surface (CT 3), 75 cm from the soil surface (CT 4), 85 cm from the soil surface (CT 5). The experiment was conducted from April 2015 to August 2015 at net house of Agronomy faculty, Hue university of Agriculture and Forestry. The experiment was laid out in randomly complete block design (RCBD) within three replications; each plot was 3 m2, 30 plants/replication/treatment. The 45-day-old seedlings were transplanted into a net house with space was 20 x 30 cm. The results showed that different pruning heights influenced on shoot lengths and number of leaves on each shoot but not plant root collar diameters. Pruning height at 55 cm (CT 2) helped plants growing and developing better, obtained stable biomass yield over three harvesting times (total biomass yield over three harvesting times was 6350 gram/plot), reduced collapsed plants after heavy rain and storm, and was easy to harvest and taking care of the plants. This pruning height (55 cm) should be applied in Moringa production at home gardens.