Journal Article Ppublish
PubMed: 42533497 DOI: 10.1155/tswj/1153166
Effects of Calcium Nitrate and Magnesium Sulfate Concentrations on Fruit Quality and Physiological Disorders of Musang King Durian (Durio zibethinus Murr.) in the Mekong Delta, Vietnam.
ScientificWorldJournal 2026(1):e1153166
Authors: Nguyen Huynh Duong, Le Vinh Thuc
Affiliations
- Faculty of Crop Science, College of Agriculture, Can Tho University, Can Tho, Vietnam, ctu.edu.vn.
Abstract
This study is aimed at determining the optimal foliar application concentrations of calcium nitrate in combination with magnesium sulfate during the fruit development stage in relation to physiological disorders in 7-year-old Musang King durian. The experiment was conducted in the Mekong Delta, Vietnam, from November 2024 to April 2025. The experiment was arranged in a two-factor completely randomized block design. The first factor consisted of four Ca(NO 3) 2 concentrations (0%, 0.2%, 0.4%, and 0.6%), applied at 40 DAFS, whereas the second factor included four MgSO 4 concentrations (0%, 0.2%, 0.4%, and 0.6%), applied at 50 DAFS. Each treatment was replicated four times, with one tree per replication. Spraying Ca(NO 3) 2 at a concentration of 0.2%-0.6% increased yield by 4.4%-9.4%. Different concentrations of MgSO 4 did not significantly affect yield. Foliar application of 0.4% Ca(NO 3) 2 combined with 0.2%-0.4% MgSO 4 did not induce physiological disorders. During the period from fruit development to harvest, nutrient management for Musang King durian can be divided into three soil-applied NPK fertilization events and two foliar applications of Ca(NO 3) 2 and MgSO 4 to mitigate physiological disorders. NPK fertilizer should be applied at a rate of 0.75 kg tree -1 per application, with an N:P:K ratio of 2:1:1 at 30 days after fruit set, 2:1:3 at 45 days after fruit set, and 1:1:3 at 60 days after fruit set, in combination with foliar application of 0.4% Ca(NO 3) 2 at 40 days after fruit set and 0.2% MgSO 4 at 50 days after fruit set.
MeSH
Fruit, Calcium, Nitrates