AF Magnesium

Highly efficient foliar Magnesium

AF Magnesium is a highly efficient liquid foliar product that provides a variety of crops with a highly efficient dose of Magnesium which aids photosynthesis and uptake of phosphorous leading to better crop establishment, improved winter hardiness and tillering, better grain quality and and correction of Magnesium deficiency. Produced using a unique process of production, via the Flex Fertiliser System ApS, AF Magnesium contains a true amide complex that increases the uptake and efficiency of trace elements to the crop. Magnesium is vital to plant growth and health.

Available pack sizes
20L, 200L, 600L, 1000L

Total analysis %

Total nitrogen 2
Amide nitrogen 2
Magnesium 12

Looking for Magnesium deficiencies

Magnesium deficiency, like any deficiency, leads to reduction in yield. It also leads to higher susceptibility to plant disease. Since Magnesium is mobile within the plant, deficiency symptoms appear on lower and older leaves first becoming pale green with bleeding of chlorophyll. The first symptom is pale leaves, which then develop interveinal chlorosis (striped leaves). You should also look out for small bright freckles which spread over the leaf and the leaf tips showing the beginning of necrosis. The expression of symptoms is greatly dependant on the intensity to which leaves are exposed to light. Deficient plants that are exposed to high light intensities will show more symptoms. Be aware that Magnesium can be deficient in low Magnesium soils due to low levels, but also can be deficient on high Magnesium soils as the soils can get tight and lock Magnesium up, making it unavailable to the plant.

If in doubt, take a tissue analysis.

The importance of Magnesium

  • Magnesium is the centre of the chloroplast and is essential for photosynthesis to occur.
  • Magnesium is bound at the central atom of porphyrin ring of the green plant pigment chlorophyll. Chlorophyll traps light energy from the sun, which is then used to combine carbon dioxide and water into sugars in the process of photosynthesis Chlorophyll is vital for photosynthesis, which helps plants get energy from light.
  • A deficiency, or unbalanced levels, of Magnesium causes effects on biomass and plant growth.

Application method


IMPORTANT: This information is approved as part of the product label. All instructions within this section must be read carefully in order to obtain safe and successful use of this product.

For best results of nutritional uptake, apply in the evening or early morning. Do not spray when the crop is in stressed conditions such as very hot weather or drought.

Shake the container well before opening and use. Spray equipment should always be clean before adding product.

COMPATIBILITY: Compatible with a wide range of agrochemical products. For details of compatibilities contact your distributor or local AIVA FERTILISER representative. Carry out a jar test before adding to a new mix.


MIXING: Half fill the spray tank with water, begin agitation and add the required quantity of AF MAGNESIUM* to the tank. Rinse container thoroughly and then add the rinsing to the sprayer. Once mixed, continue agitation until spraying is complete and spray without delay. It is not advised to leave products in the tank for long periods of time. *Mix into the tank last when used alongside pesticides.

TIMING: Apply as necessary, higher rates may be needed in very severe deficiency.

DOSE RATE: 3-6 L/ha

WATER RATE: 100-200 L/ha

Developed using the Flex Fertilizer System

Aiva Fertiliser uses Flex Fertilizer System technology where the liquid fertiliser contains nutrients in a form that can be taken up by the leaves and utilised by plants highly efficiently. The nutrient content is put into complex compounds using complex chemistry. This formulation results in nutrients being kept available to the plants for a longer period of time and are not lost to leaching or evaporation to the same extent as traditional fertilisers.