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Citrus Psylla: Both adults and nymphs of this insect suck the sap from buds, leaves, and soft parts of branches and inject poisonous substances into them. Nymphs excrete a white crystalline substance, on which black sooty mold may develop, which reduces the photosynthetic area of plants. In heavy infestation, the leaves become deformed and curl upwards. Also, this insect becomes a vector for spreading citrus greening disease.
Management: To control pests as soon as an infestation is visible, spray Thianova 25 (Thiamethoxam 25 %WG) @ 40 gm per acre or Media (Imidacloprid 17.80 % SL) @ 20 ml per acre
Citrus Leaf Miner: This pest causes damage to both the nursery and the orchid. insect attacks the tender leaves and eats the leaves by making spiral lines on the leaves. Affected leaves become discoloured light yellow and fall down. The infestation of this pest promotes the development of citrus canker disease.
Management: All the affected parts of the plants should be pruned to control this pest. In case of an increase in infestation spray Media (Imidacloprid 17.80 % SL) @ 20 ml or Profenova Super (Profenofos 40 % + Cypermethrin 4 % EC) @ 2 ml per litre of water.
Aphids: Nymphs and adults suck the sap from the tender leaves and branches. Affected leaves turn yellow, dry, deformed, and dry up. Plant growth stops. Sooty mold is produced on the honeydew excreted by the aphid. If the infection occurs at the time of flowering, it results in less fruit set. Also, it plays the role of a vector for citrus tristeza virus.
Management: To control it as soon as the infestation appears spray, Tafgor (Dimethoate 30% EC) @ 594 ml per acre or Media (Imidacloprid 17.80 % SL) @ 20 ml/ acre.
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