Symptoms
Chlorosis starts in young leaves and proceeds to the older leaves with ongoing deficiency. First leaves show chlorosis in the intercostal fields, later on they are uniformly light green or yellow. Stems, petioles and leaves often turn purple.
The leaves are stiff and curl inwards.
Reasons
Sulphur deficiency on leaves of young plants
Sulphur deficiency is similar in appearance to nitrogen deficiency, however it begins in younger leaves because sulphur is not as mobile as nitrogen within the plant.
Broccoli - Deformation
Symptoms
Chlorosis starts in young leaves and proceeds to the older leaves with ongoing deficiency. First leaves show chlorosis in the intercostal fields, later on they are uniformly light green or yellow. Frequently, brassica crops develop longer leaf stems and narrow spoon-like malformed leaves.
Reasons
Sulphur deficiency on young plants
Sulphur is required in relatively high quantities in brassicas for good growth and crop quality. Its uptake can be restricted with increasing N supply.
Sulphur deficiency might be confused with nitrogen deficiency, however it begins in younger leaves. Interveinal chloroses caused by Magnesium deficiency look similar, too.
Broccoli - Deformation
Symptoms
Chlorosis starts in young leaves and proceeds to the older leaves with ongoing deficiency. First leaves show chlorosis in the intercostal fields, later on they are uniformly light green or yellow. Frequently, brassica crops develop longer leaf stems and narrow spoon-like malformed leaves.
Reasons
Sulphur deficiency
Sulphur is required in relatively high quantities in brassicas for good growth and crop quality. Its uptake can be restricted with increasing N supply.
Sulphur deficiency might be confused with nitrogen deficiency, however it begins in younger leaves. Interveinal chloroses caused by Magnesium deficiency look similar, too.
Broccoli - Chlorosis
Symptoms
Chlorosis starts in young leaves and proceeds to the older leaves with ongoing deficiency. First leaves show chlorosis in the intercostal fields, later on they are uniformly light green or yellow. Frequently, brassica crops develop longer leaf stems and narrow spoon-like malformed leaves.
Reasons
Sulphur deficiency on young plants
Sulphur is required in relatively high quantities in brassicas for good growth and crop quality. Its uptake can be restricted with increasing N supply.
Sulphur deficiency might be confused with nitrogen deficiency, however it begins in younger leaves. Interveinal chloroses caused by Magnesium deficiency look similar, too.
Broccoli - Size reduced
Symptoms
Chlorosis starts in young leaves and proceeds to the older leaves with ongoing deficiency. First leaves show chlorosis in the intercostal fields, later on they are uniformly light green or yellow. Frequently, brassica crops develop longer leaf stems and narrow spoon-like malformed leaves.
Growth is severely stunted.
Reasons
Sulphur deficiency
Sulphur is required in relatively high quantities in brassicas for good growth and crop quality. Its uptake can be restricted with increasing N supply.
Sulphur deficiency might be confused with nitrogen deficiency, however it begins in younger leaves. Interveinal chloroses caused by Magnesium deficiency look similar, too.
Sulphur deficiency made worse by
Acidic soils
Light, sandy soils (leaching)
Low organic matter
Poorly aerated soils (waterlogged soils
) Areas with low industrial emissions
Sulfur is important for
Requirement of steady supply in relatively high quantities
Important for head development and stress tolerance
Major role in crop quality
Better inner quality determinants and improved storage quality