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Citrus Decline is not a Big Problem

Citrus Crop Fertilizer and Care Schedule

  1. January–February (Before Flowering):
    Apply 250–200 grams of fertilizer if DAP (Diammonium Phosphate) has been applied earlier.
  2. If Applying Urea (46%):
    Apply in three parts, starting from December or after applying well-decomposed FYM (farmyard manure) in the root zone.
  3. January–February (Remaining Dose):
    Apply the remaining portion of urea or any other base fertilizer.
  4. At Fruiting Stage (April–May):
    • Apply MOP or SOP (100 grams).
    • Alternatively, apply the remaining NPK 15:15:15 (if used earlier).
    • This helps in fruit flushing.
  5. Avoid Full Urea Dose During Flowering /Fruiting:
    • Applying full urea at this stage leads to vegetative growth and reduction in fruit/flower yield.
    • If necessary, apply half the dose (e.g., 250g → 125 g, or 50g is enough).
  6. Water Management:
    • Apply less water depending on weather conditions to prevent tree stress during summer.
    • Water stress during fruiting causes flower and fruit drop.
  7. After Fruit Formation:
    Apply the remaining dose of urea and NPK, previously divided into three parts.
  8. Fertilizer Application Technique:
    • Apply fertilizers 2–3 feet away from the tree trunk, in the root zone area.
  9. At Flower Formation Stage:
    • Spray 3–5 ml of Boron and 5–10 ml of zinc per 1 liter of water, or you can also Apply powder form of zinc and boron.
  10. After Tree Pruning:
    • Apply Cuperval (Bordeaux mixture) by Agpharma to prevent gumosis and insect attack.
    • During september if yellow colour appeared on citrus then applied fungicide and nitrophois 500 grams of nitrophos in two doses
  11. April to September:
    • Avoid water stress during this period to ensure healthy fruit development.

october to november

If an acre has 110 kinnows:

 Average amount of nutrients consumed per by plant / year

Nitrogen 55-60 kg, phosphorus 30-35 kg, potash 55-60 kg and farmyard manure 3 tons.

Per tree amount :

Nutrients

Amount or dose/Plant

Nitrogen

500-550 grams

Phosphorus

275-300 grams

Potash

500-550 grams


Fertilizer dose for mature plant (15 years ) :

Nutrients 

Amount or dose /Plant

Nitrogen

750 -800 grams

Phosphorus

500 grams

Potash

500 grams


Age of plant and fertilizer dosage:

Plant Age

Nitrogen

Phosphorus

Potassium

Zinc

5 yrs

15 kg

9 kg

18 kg

1-2 kg 

10 yrs

30 kg

18 kg

20 kg

2-3 kg

15 yrs

52.7 kg

30.6 kg

30.6 kg

3-4 kg

20 yrs - 25 yrs

62- 65 kg

36 kg -40 kg

36- 40 kg

4-6 kg


Plant age 


Citrus Decline is not a Big Problem
SOIL SCIENTIST 20 September 2025
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CITRUS VARIETIES AND THEIR FEATURES
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