What is the role of manganese in apple production?
Manganese effect at growth stages
Stage | Manganese effect |
Bud Burst - Start of Flowering | To maximize tissue growth |
Fruit Fill - Maturity | Along side with phosphorus will promote fruit coloration |
Manganese deficiencies in apples
Manganese deficiency is first seen as light green spots on leaf margins and as an interveinal mottling. Usually the recently matured leaves in early summer growth are the first to show symptoms.
Interveinal areas then become yellow, with prominent green veins. When severe, leaves and shoots become stunted although generally there is little change from normal leaf size and shape.
Excessive amounts of available manganese uptake – associated with low pH soils and poor drainage – results in necrosis of trunk and branch bark (measles).
Related articles
Apple and pear nutritional summary
Apple agronomic principles
Apple nutrient requirements
Apple crop nutrition programme
Identify and diagnose apple nutrient deficiencies
Looking for even more information ...
If you would like more information and would like to speak to a fruit specialist or one of our area managers or agronomists please find all their contact details here.
Contact your local Yara area manager or agronomist
Where can I buy Yara fertiliser ...
If you would like to find your nearest Yara supplier or merchant simply use this searchable map with all their contact details here.