Role of Magnesium in Citrus Production
Magnesium is needed for many processes in the citrus tree, particularly chlorophyll production.
Magnesium and yield
Magnesium applications have been proven to increase yield, as shown in Egyptian trials with navel oranges.
Magnesium and juice content
Increases in yield are largely due to increased fruit weight. However, optimum use of magnesium also boosts juice content of the fruit.
Magnesium effects on TSS and acidity
Soil applied magnesium can increase acidity and decrease the TSS/Acid ratio.
General guidelines for magnesium application
Trials show that applying magnesium to citrus crop has provided significant yield increases, largely due to increased fruit weight. Optimum use of Mg also boosts juice content of the fruit. Because this nutrient is needed throughout the main fruiting season, a constant supply is required. Magnesium nitrate is the preferred form offering a synergistic uptake of two beneficial nutrients.
| Magnesium at cirus growth stages | |
| Fruit Set | Continued strong growth |
| Fruit Enlargement and Maturation | Maintain fruit fill, fruit size and condition |
