Ending the "Off Year" in Olive: A Fertilisation Programme That Raises Tonnage

The olive grower's greatest nightmare is the "on year – off year" cycle: one season the branches break under the load, the next the tree rests and gives nothing. Is that fate? No. Fed with the right elements at the right time, an olive tree gives a regular, quality crop every year.

At Casablanca Tarım we developed our technology against the two most critical problems in the olive grove: flower drop and peacock spot. In this guide we explain how to double the yield of your olive trees.

Why do olive flowers drop, and how is it prevented?

Olive trees flower in spring, around early May. Yet many growers complain of a thin crop at harvest even when the tree was white with blossom. The underlying cause is a lack of energy during fertilisation and a zinc (Zn) deficiency.

This is exactly where Casablanca comes in:

• Fruit set: increases pollen viability and secures fertilisation.
• Blind flowers: prevents flower drop and lifts the fruit set rate.
• Fruit bud formation: feeds next year's fruit buds and reduces the risk of an off year.

A shield against peacock spot and fungal disease

Peacock spot (Spilocaea oleagina) strips the olive tree of its leaves, halts photosynthesis and leaves the tree bare · the greatest enemy of yield. It peaks especially in wet winters and springs.

The systemic copper in Casablanca works differently from conventional copper products:

• Systemic protection: it does not simply sit on the leaf surface but works into the plant sap, protecting from the inside out.
• Spotting and defoliation: it halts leaf drop and preserves the green canopy.
• Resistance: it makes the tree more resistant to winter cold and frost risk.

An application calendar for large, oil-rich fruit

Record yield in olive comes from fertilising to a calendar, not at random. The programme for olive growers:

1. After harvest, entering winter: apply Casablanca to clean the tree and heal wounds.
2. Spring awakening (shoot period): apply again as a protective shield against peacock spot risk.
3. Before flowering (bud stage): apply for fruit set while the flowers are still in bud.
4. Fruit set (shot size): repeat when the fruit reaches shot size, to prevent drop and increase size.

Frequently asked questions

When should liquid fertiliser be applied to olive? There are generally three critical periods a year: after harvest, before flowering and at fruit set. Foliar applications in these periods act far faster than base fertiliser.

Does a boron and zinc mix benefit olive? Yes · olive also likes boron, but the real driver of fruit set is zinc. In its highly available form, Casablanca is strong enough to meet the tree's requirement on its own.

Change the fate of your olive grove

While your neighbour says "there is no olive crop this year", you can be weighing the branches. Contact us to get to know Casablanca and to receive a programme tailored to your grove.

Agricultural engineer support line: 0543 731 81 82 · send a photograph of your field on WhatsApp and we will write your programme.