营养缺素症状

PRIMARY DEFICIENCY (N, P, K)

Nitrogen, N deficiency appearing on both old and young leave

Phosphate, P deficiency appearing on older leave

Potassium, K deficiency appearing on older leave

DEFICIENCY IN CROPS

Potassium deficiency
Corn

Potassium deficiency

Potassium deficiency
Oil palm nursery

SECONDARY DEFICIENCY (Ca, Mg, S)
TRACE ELEMENT DEFICIENCY (B, Zn, Cu, Fe, Mn, Mo, Ni)

Boron
Deficiencies

Calcium
Deficiencies

Copper
Deficiencies

Iron
Deficiencies

Magnesium
Deficiencies

Manganese
Deficiencies

Molybdenum
Deficiencies

Sulphur
Deficiencies

Zinc
Deficiencies

DEFICIENCY IN CROPS

Calcium deficiency
Citrus cracked fruit

Magnesium deficiency
Durian interveinal yellowing on leave

Calcium deficiency
Jackfruit crack skin peel

Zn deficiency
Banana crinkled, yellow new leaf

Calcium deficiency
Watermelon stem split

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