Foliar Fertiliser for Higher Tonnage: Making the Right Choice

2026-06-30Murat Yıldız, Agr. Eng.Academy
Foliar Fertiliser for Higher Tonnage: Making the Right Choice

Why does tonnage fall?

A foliar fertiliser that raises tonnage is an investment made with income directly in mind. The kilograms taken from a decare · the crop · are shaped not only by variety choice but by the nutritional decisions made in every stage of the growing season.

The main causes of low tonnage:

  • An incomplete or unbalanced fertiliser programme
  • Trace element deficiencies · invisible but destructive
  • Wrong timing: the right fertiliser in the wrong period is ineffective
  • Interrupted nutrition during stress periods
  • Soil pH blocking nutrient uptake

Why foliar fertiliser acts faster than soil fertiliser

Soil fertiliser must first dissolve in the soil, be absorbed by the roots and then be transported through the plant. That process takes days to weeks. Foliar fertiliser is absorbed directly through the stomata and cuticle and shows its effect within 24–72 hours. In critical periods · flowering, fruit development, moments of stress · that speed advantage makes foliar fertiliser indispensable.

The elements that raise tonnage

Zinc (Zn): the growth and yield hormone

Through the hormone auxin, zinc regulates cell division and organ development. Without enough zinc neither fruit nor leaf reaches full capacity. Zinc deficiency quietly erodes tonnage.

Iron (Fe): photosynthetic efficiency

Iron is involved in chlorophyll synthesis. When iron is lacking the leaves yellow (chlorosis), photosynthetic efficiency falls and the plant cannot produce enough carbohydrate. That directly reduces its capacity to fill fruit.

Manganese (Mn): the enzyme activator

Manganese activates more than 35 enzymes and is critical for nitrogen metabolism and protein synthesis. Interveinal chlorosis appears when it is deficient, and the plant's capacity to convert nitrogen into yield falls.

A tonnage programme with Casablanca

The Casablanca formulation supports higher crop volume with zinc, trace elements and natural biostimulant components:

  • Start of the vegetative period: Casablanca for chlorophyll and protein synthesis
  • Flowering: an intensified application for flower retention and fruit set
  • Fruit development: support for fruit sizing and filling
  • Before harvest: a final potassium application to lock in quality

Application methods

Foliar spray: the fastest result. Applied in the cool of morning or evening, while the stomata are open.
Drip irrigation: reaches the roots, longer-lasting effect. The economical choice over large areas.
Fertigation: fertiliser is mixed into the drip system so water and nutrition are delivered together.

Frequently asked questions

When should a tonnage-raising foliar fertiliser be applied?

An uninterrupted programme should run from the vegetative period through to just before harvest. The most critical periods are flowering and early fruit development.

Can foliar fertiliser replace soil fertiliser?

No. Foliar fertiliser complements soil fertilisation. Large macro element requirements are met from the soil; foliar fertiliser is used for trace elements and for critical periods that need a fast response.

In which period is foliar fertiliser most effective?

The start of flowering, fruit set and the period of rapid fruit growth give the highest yield gain. It is also effective as an emergency intervention during stress periods.

On which crops can Casablanca be used?

On all field crops, orchard crops, vegetables, fruit trees and protected production. Rate and frequency are adjusted to the species and growth stage.

Contact us

See the difference in your field this season

Contact us to trial Casablanca on your own crop, find your nearest dealer or receive an application programme.