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Nutrient  deficiency




  • Leaf size is small,uniformlly dull green or yellowish.
  • Dieback of twigs & gradual premature defoliation, result in thin, bushy appearance of tops.
  • Reduction in fruit production but quality is not lowered size may be reduced.
  • Application of ammonical or nitrate fertilizers.


  • Tree have sparse, dull green to bronze tinted foliage.
  • Older leaves fall, necrotic lesions.
  • Leaves show burnt appearance.
  • Fruit are deficient in juice. fruit yield & quality .
  • Superphosphate,diammonium phosphate @ 1 to 2 kg/tree.


  • Yellowish green blotch colour near the leaf base.
  • Only green portion remain at the tip & the base of the leaf & invested 'v' shape defoliation of bearing trees.
  • 50-100gms of mgso4/tree along with fertilize plaut may be
  • Drenched with magnesium sulphate.


  • Youngest small leathery leaves are the yellow,necrofic lerions,leaves are fall early.
  • fruits are smaller.
  • Abnormal yellowing of new growth, die back of  twig
  • little growth.
  • Potassium sulphate @ 3-5% spray solution.


  • Chlorotic blotches on leaves there region is green.
  • Small,narrow,severely chlorotic younger leaves forms small clusters & are rigidly upright.
  • Znso4 lime mixture 3-4 times various stage spraying
  • I) New flush
  • ii)One month after
  • iii)Flowering
  • iv)Fruit set


  • Interregional areas are yellow & eventually entire leaf turn ivory colour.
  • Partially defoliate, dieback.
  • Increase juice acidity & also roughness of the skin.
  • Ferrous sulphate lime mixture.
  • Fe-EDTA @ Fe-EDHA control iron chlrosis.


  • Chlrotic reticulation Christmas tree like pattern against a severely chlrotic background.
  • dot like chlrosis:dot like lestons on leaves.
  • defoliation, loss of vigous & lower yield.
  • Manganese sulphate lime mixture.
  • Under natural soil condition 120gms manganese sulphate in 100 liters of water.


  • The gum pockets at the nodes of the twigs & the brownish excrescence on fruit.
  • The cracking of fruit occurs.
  • The leaves may also develop brown stained areas.
  • The shoots are long, vigorous plant & often "s" shaped giving the appearance of excessive nitrogen fertilizer.
  • A bordeause mixture spray.
  • Spraying with any micronutrient formulation containing copper can also correct its deficiency.


  • The early symptoms noticed is the yellowing along the midrib & lateral veins.
  • Borax to the soil at the rate of 5-20 grams per tree.
  • By spraying 0.5% borax on the foilage,once or twice a year soon after new flush.


  • Water soaked areas in leaves.
  • These areas develop in to large interveinal yellow spots with gum on the lower leaf surface.
  • These conditions large irregular brown spot with a yellow hole may be found on the fruit.
  • Sodium or ammonium molybdenum(0.05%).
  • Alternately spraying with micronutrients spray solution containing Mo

Nutrient toxicity




  • Die-back, gummosis of citrus trees, ammoniated fruits & multiple beeds.Secondary symptoms are unusually deep green colour of the foliage.
  • Surplus of nitrogen can be avoided.


  • Too high phosphorus content sometimes gives rise to or accentuates zinc & copper deficiencies in citrus
  • As in other species.
  • Surplus of phosphorous can be avoided.


  • Yellowing of the older leaves around the margins & b/w the veins & a dying back of the lips & margins are some of the symptoms.
  • Surplus of boron can be avoided.


  • Chlorophyll in many of the leaves tends to fade out it becomes rust in appearance.
  • There are localized dead areas, usually on one side of the leaves.
  • growth & vigour retarded.
  • Leaf curl, puckering & malformation & drooping of leaves.
  • Sulphate of potash or nitrate up to 3% spray solution.


  • Loss of chlorophyll in young leaves.
  • Veins teen yellow colour.
  • leaves are smaller & thicker.
  • Branches dry from the tips downwards.
  • Weak shoot die, sprout from the side buds.
  • Lime @ 4 to 6 kg/tree.
  • Quick lime @ 1.5 to 2 mts
  • Calcium nitrate 2-3 times @ 2-3%.


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Please note that this is the opinion of the author and is Not Certified by ICAR or any of its authorised agents.