Raspberries - Chlorosis
Symptoms
Mainly mature leaves display interveinal chlorosis with little white spots distributed irregularly on leaf blades. Starting from the margins leaves show a dull tint, wilt and become necrotic. Canes may get completely scorched. Fruit ripening is delayed.
Causes
Calcium deficiency (right)
Calcium deficiency often occurs as a result of its low mobility in the soil and in the plant. The recommended leaf level is 0.6-2.5%.
Raspberries - Chlorosis
Symptoms
Mainly mature leaves display interveinal chlorosis with little white spots distributed irregularly on leaf blades. Starting from the margins leaves show a dull tint, wilt and become necrotic. Canes may get completely scorched. Fruit ripening is delayed.
Causes
Calcium deficiency
Calcium deficiency often occurs as a result of its low mobility in the soil and in the plant. The recommended leaf level is 0.6-2.5%.
Raspberries - Chlorosis
Symptoms
Mainly mature leaves display interveinal chlorosis with little white spots distributed irregularly on leaf blades. Starting from the margins leaves show a dull tint, wilt and become necrotic. Canes may get completely scorched. Fruit ripening is delayed.
Causes
Calcium deficiency
Calcium deficiency often occurs as a result of its low mobility in the soil and in the plant. The recommended leaf level is 0.6-2.5%.
Raspberries - Spots
Symptoms
Mainly mature leaves display interveinal chlorosis with little white spots distributed irregularly on leaf blades. Starting from the margins leaves show a dull tint, wilt and become necrotic. Canes may get completely scorched. Fruit ripening is delayed.
Causes
Calcium deficiency
Calcium deficiency often occurs as a result of its low mobility in the soil and in the plant. The recommended leaf level is 0.6-2.5%.
Raspberries - Chlorosis
Symptoms
Mainly mature leaves display interveinal chlorosis with little white spots distributed irregularly on leaf blades. Starting from the margins leaves show a dull tint, wilt and become necrotic. Canes may get completely scorched. Fruit ripening is delayed.
Causes
Calcium deficiency
Calcium deficiency often occurs as a result of its low mobility in the soil and in the plant. The recommended leaf level is 0.6-2.5%.
Raspberries - Necrosis
Symptoms
Mainly mature leaves display interveinal chlorosis with little white spots distributed irregularly on leaf blades. Starting from the margins leaves show a dull tint, wilt and become necrotic. Canes may get completely scorched. Fruit ripening is delayed.
Causes
Calcium deficiency
Calcium deficiency often occurs as a result of its low mobility in the soil and in the plant. The recommended leaf level is 0.6-2.5%.
Raspberries - Necrosis
Symptoms
Mainly mature leaves display interveinal chlorosis with little white spots distributed irregularly on leaf blades. Starting from the margins leaves show a dull tint, wilt and become necrotic. Canes may get completely scorched. Fruit ripening is delayed.
Causes
Calcium deficiency
Calcium deficiency often occurs as a result of its low mobility in the soil and in the plant. The recommended leaf level is 0.6-2.5%.
Calcium deficiency vs. healthy plant made worse by
- 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
Calcium is important for
- Structure, stability and permeability of cell membranes
- Regulation of enzyme systems
- Alongside potassium responsible for regulation of stomata
- Gives plants more resistance to biotic and abiotic stress
- Proper development of leaves and fruit
- Prevention of post harvest decay
Yara recommended fertilisers for Calcium deficiency
YaraVita BUD BUILDER FL
Raspberry: 5 l/ha applied from green bud to just prior to start of flowering. Also, 5 l/ha post-harvest, pre-leaf senescence. Water rate: 200 to 500 l/ha.
Read more about YaraVita BUD BUILDER FLYaraVita STOPIT
Raspberry: 3 applications of 10 l/ha at start of flowering, end of flowering and fruit development. Water rate: 500 l/ha.
Read more about YaraVita STOPIT
