Soya bean - Chlorosis
Symptoms
Iron deficiency symptoms on soybean are interveinal chlorosis of the upper, new leaves. With progressing deficiency, the complete leaf including the veins turns yellow to white. Brown or whitish necrotic spots may occur near the leaf edge.
Reasons
Iron deficiency
Soybean cultivars differ in their tolerance of Fe deficiency.
Fe and Mn deficiency symptoms are difficult if not impossible to tell apart.
Soya bean - Chlorosis
Symptoms
Beginning interveinal chlorosis of the upper, new leaves due to iron deficiency.
Reasons
Iron deficiency
Soybean cultivars differ in their tolerance of Fe deficiency.
Fe and Mn deficiency symptoms are difficult if not impossible to tell apart.
Soya bean - Chlorosis
Symptoms
Beginning interveinal chlorosis of the upper, new leaves due to iron deficiency.
Chlorosis starts on the leaf base and proceeds along the midrib.
Reasons
Iron deficiency
Soybean cultivars differ in their tolerance of Fe deficiency.
Fe and Mn deficiency symptoms are difficult if not impossible to tell apart.
Iron deficiency made worse by
- High pH
- Water logged soils
- Calcareous soils
- High copper, manganese or zinc soils
Iron is important for
- Increased formation of chlorophyll
- More efficient photosynthesis
- Better formulation of proteins
