Optima Leaf-Cu

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Optima Leaf-Cu+ is a liquid foliar fertiliser based on copper that has been 100% complexed with hepta gluconic acid (HGA). Copper strengthens cells and has a positive effect on sugar and starch production.

Optima Leaf+ Range

Optima Leaf-Cu+ is part of the Optima Leaf range, a line of foliar fertilisers that are efficiently absorbed by the crop. The '+' stands for the presence of supplement trace elements. These prevent one-sided fertilisation and demonstrably increase the effectiveness of the product.

Functions of copper

Essential in the seed and fruit formation stage.
Essential for chlorophyll formation and photosynthesis.
Important for strong, flexible plant cells.
Positive influence on the starch content, sugar content and flavour of fruit.

Possible causes of copper deficiency in plants

Low copper levels in the soil.
Soils with a high organic matter content fix copper which reduces its availability for the crops.
Too much phosphate and nitrogen in the soil prevent the copper uptake in the crop.
A high soil pH reduces the availability of copper.

Advantages

Delivers copper in an organically complexed form.
Ensures efficient uptake and translocation of copper.
Enrichi aux oligo-éléments.
Product toegelaten in de biologische land- en tuinbouw conform de reglementen : EU 2018-848 & EU 2021-1165 .

Composition

Copper (Cu) water soluble	45 g/kg
Iron (Fe) water soluble	3 g/kg
Manganese (Mn) water soluble	1 g/kg
Boron (B) water soluble	0,3 g/kg
Zinc (Zn) water soluble	0,25 g/kg
Molybdenum (Mo) water soluble	0,1 g/kg
Complexed Cu, Fe, Mn, Zn	100 %
Stability range pH	3,0 - 12,0
Specific gravity	1,2
pH product	7,5 - 8,5
Appearance	Dark green liquid

Packaging

Available in 17.5 litre containers.

EC Fertiliser

Application rates

Foliar application (maximum concentration 1:200, unless stated otherwise)

Arable crops:
1.5 litres per hectare.
2-5 per year, during leaf development.

Tree nursery, vineyards, (small) fruits:
1.5 litres per hectare.
4-6 per year, during leaf development.

Lawn and pasture:
1.5 litres per hectare.
1-2 per year, during leaf development.

Forestry and plant nursery:
1.5 litres per hectare.
4-6 per year, during leaf development.

Ornamental crops:
1.5 litres per hectare.
4-6 per year, during leaf development.

Vegetables and strawberries:
1.5 litres per hectare.
2-6 per year, during leaf development.

Fertigation application:
Standard dosage all crops:
2.0 litres per hectare, every 2 weeks, as required.

Instructions for use

Shake or stir well before use
Store in a cool dry place away from direct sunlight. This product has been tested and can be stored safely at temperatures from 5°C to 25°C. Crystallisation and/or sedimentation may occur below 5°C.
Apply under suitable spraying conditions (e.g. temperature, humidity, wind speed). Do not treat if the temperature is >25°C or if it might rise to >25°C in the hours after application. Preferably perform the treatment at the end of the day. Do not apply product close to harvesting.
Miscibility and/or efficacy cannot be guaranteed when combined with any other agent. Before mixing, it is recommended to perform a test on a small scale.
Do not mix with other products in pure, undiluted form. Product is stable at pH 3.0 - 12.0. In combination with products containing phosphate, always test for combinability first.
We recommend carrying out a trial application on a small area first, before applying to the entire plot.
The shelf life of the product is stated on the label. As long as the guidelines for storage are followed the expiry date (BB) on the label is guaranteed.

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