Zinc
Symptoms
Mottled leaf: small leaves with yellow areas between green veins.
Correction
Chelated zinc or zinc sulphate foliar sprays on new flush.
Fruits · Citrus spp.
Citrus fertilizer and nutrition guide
Orange, mandarin, sweet lime and lemon: zinc, iron and manganese to fix common leaf yellowing.
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About Citrus nutrition
Citrus crops such as Nagpur mandarin, sweet orange, sweet lime and lemon are perennial and need nutrition matched to flushes of new growth, flowering and fruit development. Micronutrient deficiencies (zinc, iron and manganese) are very common and show up as leaf yellowing.
- Climate
- Subtropical to tropical climate, about 13-37 °C; grown widely in Maharashtra, Andhra Pradesh, Punjab and the North East.
- Soil
- Deep, well-drained loam, pH around 5.5-7.5; sensitive to waterlogging and salinity.
Stage-wise nutrient management for Citrus
What the crop needs most at each growth stage.
New flush
Nitrogen with zinc and manganese for healthy new leaves.
Flowering & fruit set
Boron and zinc for fruit set; reduce excess nitrogen.
Fruit development
Potassium and magnesium for fruit size and juice content.
Fruit maturity
Potassium for sugar, colour and peel quality.
Common nutrient deficiencies in Citrus
How to recognise them in the field and how they are usually corrected.
Iron
Symptoms
Young leaves turn yellow while veins stay green, common in alkaline soils.
Correction
Chelated iron foliar or soil application.
Magnesium
Symptoms
Yellow inverted-V patterns on older leaves.
Correction
Magnesium sulphate through soil or foliar application.
More fruits guides
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Exact doses depend on your soil test, variety and irrigation. Tell us your crop stage, area and location and we will recommend the right products and quantities.
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