Calcium Deficiency vs. Healthy Plant - Raspberry

Symptom description

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.

Made worst 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.

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.

Cause description

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%.