Cauliflower - Deformation
Symptoms
Distorted leaves with reduced leaf area and chlorotic leaf margins. "Whiptail" formation.
Symptoms begin at the younger leaves
Causes
Molybdenum deficiency
Cauliflower - Deformation
Symptoms
Socalled "whiptail" formation: Leaf area is reduced partly till to the midrib.
Symptoms begin at the younger leaves
Causes
Molybdenum deficiency.
Cauliflower - Deformation
Symptoms
If molybdenum deficiency occurs in a late stadium of development, loose curds are formed. In addition small leaves and bracts penetrate the curd surface.
Causes
Molybdenum deficiency of curd
Cauliflower - Deformation
Symptoms
If molybdenum deficiency occurs in a late stadium of development loose curds are formed. In addition small leaves and bracts penetrate curd surface.
Causes
Molybdenum deficiency of a curd (right) compared to optimum supply (left).
Cauliflower - Deformation
Symptoms
Young seedlings with molybdenum deficiency show stunted growth and severe leaf deformations. Leaf blades are reduced and cupped upwards.
Leaf margins show chlorosis and slight necrosis.
Causes
Molybdenum deficiency
Symptoms of Boron deficiency look similar.
Molybdenum deficiency made worse by
- Acid soils
- Low pH
- Low levels of soil organic matter
Molybdenum is important for
- Increased yields (especially with broccoli and cauliflower), inner quality (sugar and vitamin C content) and shelf life
Yara recommended fertilisers for Molybdenum deficiency
YaraVita BRASSITREL PRO
Cauliflower: 3 to 4 l/ha as early in the growing season as possible, provided there is adequate leaf cover to intercept the spray (e.g. 4 to 6 leaf stage). Repeat as necessary at 10 to 14 day intervals up to one month before harvest. Water rate: 200 l/ha.
Read more about YaraVita BRASSITREL PROYaraVita MOLYTRAC 250
Cauliflower: 0.25 l/ha from 4 to 6 leaf stage. For moderate to severe deficiency, repeat applications should be made at the above rate at 10 to 14 day intervals, or a second application may be made at early head development or buttoning. Water rate: 200 l/ha.
Read more about YaraVita MOLYTRAC 250
