Phosphorus Deficiency in Citrus | Yara United States

Change crop

Nutrients

Citrus - Deformation

Symptoms
Phosphorus deficiency leads to fruits with coarse and thick peel.

Reasons
Phosphorus deficiency on orange (right)

Citrus - Chlorosis

Symptoms
Symptoms begin at the mature leaves. They partly turn yellow. In severe cases small brownish to bronze freckles occur, spread over the leaf blade and coalesce. This discoloration is first appearing along the main veins.

Reasons
Phosphorus deficiency on leaf

Citrus - Chlorosis

Symptoms
Symptoms begin at the mature leaves.They partly turn yellow. In severe cases small brownish to bronze freckles occur, spread over the leaf blade and coalesce. This discoloration is first appearing along the main veins.

Reasons
Phosphorus deficiency on leaf.

Phosphorus deficiency on orange made worse by

Acidic or very alkaline (calcareaus) soils
Low organic matter
Cold or wet conditions
Crops with a poorly developed root system
Soils with low P reserves
Soils with a high phosphate capacity
Iron rich soils

Phosphorus is important for

Vegetative growth increased
Leaves are much greener
Fruit set is increased
Yield boosted, fruit quality enhanced (sugar/acid improved)
Particularly important in young trees with poorly developed root systems

Yara recommended fertilizers for Phosphorus

YaraMila® 15-15-15

Citrus: Start your annual grove nutritional program out right by applying 200-300 lbs YaraMila® 15-15-15 /acre according to soil test for a balanced nitrogen approach by supplying both nitrate and ammoniacal nitrogen along with fully available Phosphate, Potassium and Sulfur in a homogenous prill. Consult with your agronomist for local recommendations.

YaraMila® 21-7-14

Citrus: Start your annual grove nutritional program out right by supplying 140-240 lbs YaraMila® 21-7-14 /acre. Using YaraMila® 21-7-14 provides a balanced nitrogen approach by supplying both nitrate and ammoniacal nitrogen along with fully available Phosphate, Potassium and Sulfur in a homogenous prill. Consult with your agronomist for local recommendations.

YaraVita® MAGPHOS™

Citrus: 1-2 quarts/acre applied at 10 to 14 day intervals following fruit set. Water rate: 50 to 150 gallons/acre.

YaraVita® SENIPHOS™

Citrus: 2 to 4 quarts/acre at fruit set with 1 to 2 further applications at 10 to 14 day intervals. Water rate: 50 to 100 gallons/acre.