Nitrogen deficiency on orange-Citrus

Change crop

Nutrients

Citrus - Chlorosis

Symptoms
The older leaves are pale green to yellow and abscise. The life of a leaf can be shortened from 1-3 years to 6 months. The leaf veins have a clear colour tending to white.

Reasons
Nitrogen deficiency Sulfur deficiency causes similar symptoms, but it begins at the younger leaves and the veins are usually green.

Nitrogen deficiency on orange made worse by

Low or high pH soils
Sandy or light soils (leaching
) Low organic matter
Drought conditions
High rainfall (leaching) or heavy irrigation
Addition or high levels of non-decomposed organic matter/manure (eg straw)
Fast growing crops

Nitrogen is important for

Foliage lusher and greener
Shoot growth vigour increased
Fruit set/crop load increased
Yield is increased
Juice quantity and quality improved (acidity and soluble solids increased)

Yara recommended fertilizers for Nitrogen

YaraLiva NITRABOR

Citrus: 150-300 kg/ha applied monthly in early spring (ex. August + September). For more detailed advice on rates and timings, contact your local Yara Agronomist.

YaraRega AQUAFLEX 13

Citrus: Exact recommendation depends on soil analysis, yield potential, fertigation practices and nutrient management plan. Refer to your local Yara Agronomist for detailed recommendation.

YaraRega AQUAFLEX 18

Citrus: Exact recommendation depends on soil analysis, yield potential, fertigation practices and nutrient management plan. Refer to your local Yara Agronomist for detailed recommendation.

YaraTera CALCINIT

Citrus: 150-300 kg/ha applied monthly in early spring (ex. August + September). For more detailed advice on rates and timings, contact your local Yara Agronomist.

YaraVita SENIPHOS

Citrus: 5 to 10 l/ha applied during fruit development at 7 to 14 day intervals. Water rate: 500 l/ha minimum. Alternatively, 250 mls / 100 l applied during fruit development at 7 to 14 day intervals, based on a typical TRV of 2500 l/ha and a maximum TRV of 4000 l/ha.