Aphids – Page 2 – Gramophone

Control of mosaic virus in watermelon

Watermelon mosaic virus initially appears on the leaves and spreads from the stem to the fruit.
Fruits become distorted and are small in size, and they break down from the petioles.
Leaves of plant curl downwards and leaf size smaller than normal.
This disease transmitted by aphid.
Preventive management of this disease, use the disease-free seed for sowing and do proper tillage operation.
Remove all the infected plants from the field.
Spray of Imidachloprid17.8% SL @ 70-100 ml/acre.

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The affected plants have to be uprooted and destroyed to prevent the spread of the disease.
For effective control of aphid fortnightly spray of acephate 75% SP @ 300-400 gm/acre or Imidacloprid 17.8% SL @ 100 ml/acre or acetamiprid 20% SP @ 150-200 gm/ acre.

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The affected plants have to be uprooted and destroyed to prevent the spread of the disease.
For effective control of aphid fortnightly spray of acephate 75 % SP @ 300- 400 gm / acre or Imidacloprid 17.8% SL @100 ml /acre or acetamiprid 20% SP @ 150-200 gm/ acre.

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The affected plants have to be uprooted and destroyed to prevent the spread of the disease.
For effective control of aphid fortnightly spray of acephate 75 % SP @ 300- 400 gm / acre or Imidacloprid 17.8% SL @ 100 ml /acre or acetamiprid 20% SP @ 150-200 gm/ acre.

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The affected parts turn yellow, get curled, wrinkle and deformed in shape and ultimately dry and die away.
Spray dimethoate 30 ml per pump or Imidacloprid 17.8% SL 10 ml per pump at fortnightly intervals.

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25/01/2019

Plants are infested at all the stages.
Both nymph and adults suck the sap from leaves, inflorescence or the developing pods.
Curling may occur for infested leaves and at advanced stage plants may wither and die.

Control Measures

Use crop rotation.
Apply a recommended dose of fertilizers.
Destroy the affected parts along with the aphid population in the initial stage.
Spray the crop with one of the following insecticides in the aphid appearance.
Imidacloprid 17.8% @ 100 ml/acre or Thiamethoxam 25 WG @ 75 gm/acre or Dimethoate 30 EC @ 325 ml/acre.
Spraying should be done in the evening time.

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21/03/2018

The affected parts turn yellow, get curled, wrinkle and deformed in shape and ultimately dry and die away.
Spray dimethoate 30 ml per pump or Imidacloprid 17.8% SL 10 ml per pump at fortnightly intervals.

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01/03/2018

Control of Aphids on Sponge Gourd and Ridge Gourd

The affected parts turn yellow, get curled, wrinkle and deformed in shape and ultimately dry and die away.
Spray dimathoat 30 ml per pump or Imidaclorpid 17.8% SL 10 ml per pump at fortnightly intervals.

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