Fagiolo di soia - Necrosis
Sintomi
Ca deficient plants show reduced leaf expansion, primary leaves are often cup-shaped when emerged. Brown spots on young leaves and premature leaf senescence occur.
Cause
Calcium deficiency
Calcium deficiency is most common in acid, sandy soils low in organic matter.
Fagiolo di soia - Deformation
Sintomi
Ca deficient plants show reduced leaf expansion, primary leaves are often cup-shaped when emerged. Brown spots on young leaves and premature leaf senescence occur.
Cause
Calcium deficiency
Calcium deficiency is most common in acid, sandy soils low in organic matter.
Fagiolo di soia - Necrosis
Sintomi
Small brown spots, coalescing to interveinal necrosis on young leaves, and premature leaf senescence occur due to calcium deficiency.
Cause
Calcium deficiency
Calcium deficiency is most common in acid, sandy soils low in organic matter.
Fagiolo di soia - Chlorosis
Sintomi
Interveinal chlorosis on younger leaves due to calcium deficiency.
Cause
Calcium deficiency
Calcium deficiency is most common in acid, sandy soils low in organic matter.
Fagiolo di soia - Necrosis
Sintomi
Striking leaf symptoms due to Ca deficiency: drop-like, whitish to bluish spots occur on the leaf blade. Necroses of the same color expand along the leaf margin.
Cause
Calcium deficiency
Calcium deficiency is most common in acid, sandy soils low in organic matter.
Calcium deficiency peggiorato da
- Acidic soils
- Sandy or light soils (leaching)
- Acid peat soils
- Soils rich in sodium
- Soils rich in aluminium
- Drought conditions
- Fruit high in nitrogen or potassium
- Large fruit
Calcio è importante per
- Improved cell division and elongation
- Proper working of cell membrane
- Permeability of cell membrane
