Manganese deficiency - Rye

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.

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

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.

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.