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CARBOCAL - Calcium fertiliserBFA certified organic

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Olive Flowering

Drum muster & delivery charges apply.
Dilution rate- 1:1000
Application rate: 5L/Hectare.

Calcium is critical for cell wall structure and strength; lending increased specific gravity; disease resistance and insect resistance. Post harvest damage can be minimised with sufficient use of calcium during the growing cycle.

CarboCal is a calcium and organic acid rich compound designed for both foliar and drip application. Despite calcium being a traditionally immobile ion, CarboCal is able to deliver much needed calcium to all parts of the plant. CarboCal is formulated with over 50 organic acids, all available for rapid uptake and movement within the plant, improving structural strength, stability and quality. CarboCal provides superior calcium sap levels for fruit quality and disease resistance and contains no Nitrogen or Chloride. CarboCal includes a number of growth hormones, which aid flowering and increase the general vigor of plants, without creating the vegetative flush associated with Nitrogen based products. CarboCal is an effective source of calcium for vegetable, vine and tree crops. CarboCal is a BFA registered organic product.

non-returnable IBC's

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Dilution Rate:   1:1000 (1L of product to 1000L of water)
Application Rate:   5L (5000L diluted) per Hectare
Application Method/s:   Foliar Spray or fertigation
Contains:   Calcium, over 50 organic acids, a number of growth hormones
Does Not Contain:   Contains no Nitrogen or Chloride
Organic Status:  BFA registered

Sunburn Damage in Olive Trees


Sunburn Damage in Olive Trees


I have a couple of olive trees with a bark problem.  This particular tree is a bit stressed from lace bug I believe, I'm not sure they've had their full care for the last couple of years due to the transition. It needs a bit of a prune too which I will take care of before I spray it. But will wait for your comments first.  See image below.

About Sunburn Damage

Sunburn can occur in olive trees as damage to bark, foliage, fruit which is caused by excessive solar radiation exposure and seriously affect growth.

Sunburn can cause the tree the olive tree to be more susceptible to borers.  Olive trees affected by sunburn are typically poor in health and if severe enough can result in premature death.

Sunburn in olive trees is usually associated with warm weather coupled with water deficit.

Although olive trees are well adapted to hot and dry conditions, too much heat can result in lower yields, leaf wilt, and reduced photosynthesis as the olive tree shuts down critical functions to respond to heat stress.

Older trees can be damaged when the bark is newly exposed to the sun because of pruning or premature leaf drop. Heavy pruning of olive trees can lead to increase reflected light or radiate heat around established trees can also lead to sunburn.


Sunburn to trunks can leave the tissue dried, cracked and sunken and the bark may peel away leaving the wood susceptible for borer attack or fungal infections to enter the bark for further damage to the exposed hardwood underneath.

Foliage may be brown and necrosis begins at leaf tips, margins and between veins. 

Heat stress usually results in fruit drop if an olive crop is present.


Encourage good soil health and moisture-holding capacity.  Encourage branch structure with proper pruning and plant training.  Retain branches that will help to shade the trunk and be beneficial for cropping.

Give trees adequate irrigation to reduce stress and do not overwater trees.

For olive trees and fruit to reduce the risk of sunburn use Kaolin clay applied as a foliar film to help offer protection in reducing heat stress and intense solar radiation.

Whitewashing trunks may help prevent sunburn which is usually seen as an application of rubberised tree sealant.  Sometimes water-based paints are used.

If leaves have not already been killed, sunburn injury to foliage can often be remedied by adequate irrigation, adding shade or shelter, and improving soil conditions.

Sunburn Olive Tree

Bark has been affected by intense sun radiation exposure and also water deficit.