Lechuga y ensalada - Growth retardation
Symptoms of nitrogen deficiency start on older leaves with light green clorosis. Later the whole head is affected and looks yellow green.
Strongly restricted growth and delayed crop development are further symptoms. Older leaves may decay. The shape of the leaves remains normal.
With severe N deficiency, no head is formed.
Nitrogen deficiency (right)
Symptoms may be confused with magnesium, sulfur or manganese deficiency.
With magnesium deficiency leaves become yellowish but in this case the veins remain green.
Sulphur deficiency also shows yellowish leaves, but symptoms start from the younger leaves here. Furthermore, leaves are less crinkled than normal.
Symptoms of manganese deficiency also show yellowish leaves, but growth is less restricted, the veins of the leaves remain green and brown necrotic spots appear on the edge of the leaves.
Lechuga y ensalada - Growth retardation
Symptoms of nitrogen deficiency start on older leaves with light green clorosis. Later the whole head is affected and looks yellow green.
Strongly restricted growth and delayed crop development are further symptoms. Older leaves may decay. The shape of the leaves remains normal.
With severe N deficiency, no head is formed.
Nitrogen deficiency
Symptoms may be confused with magnesium, sulfur or manganese deficiency.
With magnesium deficiency leaves become yellowish but in this case the veins remain green.
Sulphur deficiency also shows yellowish leaves, but symptoms start from the younger leaves here. Furthermore, leaves are less crinkled than normal.
Symptoms of manganese deficiency also show yellowish leaves, but growth is less restricted, the veins of the leaves remain green and brown necrotic spots appear on the edge of the leaves.
Lechuga y ensalada - Growth retardation
Symptoms of nitrogen deficiency start on older leaves with light green clorosis. Later the whole head is affected and looks yellow green.
In varieties with anthocyanin, the leaves may have a purple flush.
Strongly restricted growth and delayed crop development are further symptoms. Older leaves may decay. The shape of the leaves remains normal.
With severe N deficiency, no head is formed.
Nitrogen deficiency (right) compared to optimum supply (left)
Nitrogen deficiency may be confused with magnesium, sulfur or manganese deficiency.
With magnesium deficiency leaves become yellowish but in this case the veins remain green.
Sulphur deficiency also shows yellowish leaves, but symptoms start from the younger leaves here. Furthermore, leaves are less crinkled than normal.
Symptoms of manganese deficiency also show yellowish leaves, but growth is less restricted, the veins of the leaves remain green and brown necrotic spots appear on the edge of the leaves.
Lechuga y ensalada - Growth retardation
Symptoms of nitrogen deficiency start on older leaves with light green clorosis. Later the whole head is affected and looks yellow green.
Strongly restricted growth and delayed crop development are further symptoms. Older leaves may decay. The shape of the leaves remains normal.
With severe N deficiency, no head is formed.
Plants develop very long main roots and only a few secondary roots.
Nitrogen deficiency on leaves and roots
Nitrogen deficiency may be confused with magnesium, sulfur or manganese deficiency.
With magnesium deficiency leaves become yellowish but in this case the veins remain green.
Sulphur deficiency also shows yellowish leaves, but symptoms start from the younger leaves here. Furthermore, leaves are less crinkled than normal.
Symptoms of manganese deficiency also show yellowish leaves, but growth is less restricted, the veins of the leaves remain green and brown necrotic spots appear on the edge of the leaves.
Lechuga y ensalada - Elongation, excessive
Plants with nitrogen deficiency develop very long main roots and less secondary roots than normal.
Nitrogen deficiency on roots
- Low or high pH soils
- Sandy or light soils (leaching
- ) Low organic matter
- Drought conditions
- High rainfall (leaching) or heavy irrigation
- Addition or high levels of non-decomposed organic matter/manure (eg straw)
- Fast growing crops
- High and early yields, good leaf size, head formation and market quality
