Symptoms
Leaves of Mn deficient plants show chlorotic spots and streaks which turn gray-white to brown and coalesce. Symptoms appear on younger and central leaves.
Leaves are kinked or bend down when the spotting is intense.
Plant growth is stunted.
Reasons
Manganese deficiency
Mn deficiency is enhanced by cool, dry weather.
Cereals - Growth retardation
Symptoms
Light green areas within the stand indicate affected plants. The tramlines are not concerned. Because of the soil compaction the manganese is better available in these areas.
Reasons
Manganese deficiency
Characteristic symptoms of Mn deficiency are the dark green tractor lanes within the chlorotic area. Here the soil is compressed and less Mn oxidation occurs.
It is common that Mn deficiency chlorosis occurs in irregular patches within the stand. The chlorotic mottling is seen first on youngest fully expanded leaves. The susceptibility for manganese deficiency raises with high pH, high humus content, loose soil structure.
Often occurs in early spring as it is too cold for manganese deoxidizing bacteria.
Cereals - Chlorosis
Symptoms
Young leaves of Mn deficient plants show chlorotic spots and streaks which turn brown to gray-white and coalesce.
Strongly affected leaf blades bend.
Reasons
Manganese deficiency
Cereals - Chlorosis
Symptoms
Mn deficient plants show chlorotic spots and streaks which turn brown/gray-white, coalesce and may expand over the older leaves. Strongly affected leaf blades bend.
Reasons
Manganese deficiency
It is characteristic that Mn deficiency chlorosis occurs in irregular patches within the stand. The chlorotic mottling is seen first on youngest fully expanded leaves.
The susceptibility for manganese deficiency raises with high pH, high humus content, loose soil structure.
Often occurs in early spring as it is too cold for manganese deoxidizing bacteria.
Cereals - Deformation
Symptoms
Leaves have grey specks or light brown lesions and they break/bend over near the centre section. Some leaves show signs of chlorosis which eventually hides the lesions.
Reasons
Manganese deficiency (Grey speck)
May be confused with applications of pesticides or foliar fertilisers.
Cereals - Chlorosis
Symptoms
Leaves of Mn deficient plants show chlorotic spots and streaks which turn gray-white to brown and coalesce. Symptoms appear on younger and central leaves.
Leaves are kinked or bend down when the spotting is intense.
Plant growth is stunted.
Reasons
Manganese deficiency
Mn deficiency is enhanced by cool, dry weather.
Cereals - Chlorosis
Symptoms
Leaves of Mn deficient plants show chlorotic spots and streaks which turn gray-white to brown and coalesce. Symptoms appear on younger and central leaves.
Leaves are kinked or bend down when the spotting is intense.
Plant growth is stunted.
Reasons
Manganese deficiency
Mn deficiency is enhanced by cool, dry weather.
Cereals - Chlorosis
Symptoms
Leaves of Mn deficient plants show chlorotic spots and streaks which turn gray-white to brown and coalesce. Symptoms appear on younger and central leaves.
Leaves are kinked or bend down when the spotting is intense.
Plant growth is stunted.
Reasons
Manganese deficiency
Mn deficiency is enhanced by cool, dry weather.
