Effect of an Eco-friendly Bloom Thinning Formulation on Fruit Growth and Profitability of Mango Trees in Vietnam

초록

Mango, Mangifera indica L. (Anacardiaceae), is a popular tropical fruit with a unique flavor and high nutritional value. The thinning of blooms and fruits, an important technique in mango growth, is used to limit the fruit number per tree while increasing the size and quality of fruits produced for commercial purposes. We tested the efficacy of an eco-friendly bloom thinning formulation (BTF) on three different mango varieties (Taiwan Yellow Gold, Cat Chu, and Hoa Loc) across three seasons in a trial conducted in three provinces (Can Tho, Dong Thap, and Tien Giang) of Vietnam. BTF treatment thinned the mango fruit crop causing a reduction in crop load, fruit set, and number of fruits per tree. Moreover, in the harvest season, the three BTF-treated mango tree varieties produced a greater proportion of high-quality mangoes than those produced by the control trees. Furthermore, compared with the control, BTF treatment increased the large fruit ratio of Taiwan Yellow Gold, Hoa Loc, and Cat Chu varieties by 16.0%, 11.0%, and 15.7%-8.9%, respectively. The income value of BTF-treated trees was also at least 20% higher than that of the control trees. However, no significant differences were observed in the percentage of soluble solid, acidity, vitamin C, or beta-carotene contents between BTF-treated and untreated fruits, without any physiological disorder. These findings indicate that BTF spray treatment enhanced the fruit weight, average production, and market price of all the tested mango cultivars from Vietnam.

키워드