Preventing Citrus Albedo Breakdown
The albedo or mesocarp is the white spongy material located between the fruit segments and the outer leathery peel or flavedo. Albedo breakdown is the loss of cohesion in the cells if this white layer under the skin and any stress imposed on this as a result of expansion of the pulp can lead to rotting of this layer. It is also associated with creasing in the fruit. Good nutrition - particularly with calcium - helps to minimize breakdown of albedo tissue.
Crop Nutrition and Citrus Albedo Breakdown
Calcium nitrate sprays are particularly effective at helping reduce Albedo Breakdown. Fertigating with YaraLiva® calcium nitrates will reduce and may eliminate the need for foliar applications.
Poor boron supply also reduces calcium uptake and therefore can induce a breakdown of the albedo and promote post-harvest rot.
Calcium
Research shows foliar sprays of calcium are highly effective. In trials, only 13% of treated fruits showed symptoms compared to 35% in controls.
Boron
A lack of boron commonly results in gum pockets forming in the fruit albedo and flesh, near the rind. This also reduces fruit value and marketability.
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Role of Calcium in Citrus Production
Calcium is a key component of cell walls and also has a direct influence on the regulation of enzyme systems, phytohormone activities and nutrient uptake.
Role of Boron in Citrus Production
Boron is involved in various enzyme systems and in carbohydrate metabolism and translocation. Boron, like calcium also has an important role in cell structure and cell wall integrity.
