VitaFer EXTRA Mn

Mineral fertiliser for the intervention and preventive supply of manganese.

Density 1.64 kg/l 

pH 3.5 – 4.5 


Recommendations for use: 

– For crops with a high manganese requirement: sugar beets, potatoes, field vegetables, fruit trees, maize, cereals, legumes 

– In dry years or on dry soils to increase resistance to stress conditions. 

– In order to compensate for the Mn deficit when it occurs 

– To increase frost resistance  

– To increase resistance to abiotic and biotic stress conditions: drought, disease-causing pathogens 

– To improve yield quantity and quality 

Do not mix with phosphorus, potassium, silicon and boron fertilisers. For other foliar fertilisers and pesticides, a mixability test should be carried out before application.

The role of manganese in crops: 

  • has a positive effect on the nitrogen balance of the plant by, among other things, preventing excessive nitrate accumulation in the plant. 
  • increases the amount of vitamin C 
  • influences protein synthesis in the plant 
  • improves root system morphology by stimulating phosphorus uptake 
  • increases frost resistance 
  • improves tolerance to stress conditions – especially drought 
  • has a toxic effect on certain soil pathogens, thereby reducing disease pressure 
  • by activating enzymes, improves photosynthesis and increases the amount of chlorophyll in the leaves.

Manganese deficiencies result in:

  • Mottled chlorosis on young leaves
  • Inhibition of plant growth
  • Yellowing of leaves and appearance of brown spots between nerves
  • Stunted root growth
  • Partial leaf dieback
  • Reduced plant uptake of nitrogen and phosphorus

Dosage and timing of application 

Fertigation – not to exceed a concentration of 0.3%