Whitefly outbreak in cotton crop

13/06/2022Posted on

White flies have become one of the most serious problems of crop protection. White flies usually lay eggs on the underside of leaves.

White flies cause damage to plants in cotton crop in two ways, first by sucking sap and transmitting viral disease, secondly by secreting honeydew on leaves, due to which the chances of fungal disease outbreak increase.

The following conditions of white fly cause damage in cotton crop –

  • Nymph – greenish yellow, oval

  • Pupa – oval in shape, present on the lower surface of the leaves

  • Adults – small mosquitoes with yellow bodies with a white waxy surface

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Control of white fly in watermelon

25/01/2021Posted on
Control of white fly in watermelon
  • Nymphs and adults suck the cell sap from the leaves.
  • The affected leaves curl and dry.
  • The affected plants show stunted growth.
  • Whiteflies are also responsible for transmitting yellow vein mosaic virus or leaf curl disease.
  • 4-5 foliar spray of dimethoate 30% EC @ 300 ml/acre or profenophos 50% EC @ 400 ml/acre at 10 days intervals.
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Protection white fly in cotton

05/06/2020Posted on
Protection of whitefly in cotton
  • Its nymphs and adults suck the juice by sticking it on the leaves, which causes light yellow color to fall on the leaves. Later the leaves become completely yellow and deformed.
  • This pest helps to spread viral disease.
  • To control this, Diafenthiuron 50% WP 250 gm or Pyriproxyfen 10% + bifenthrin 10% EC 250 ml or
  • Spraying of Flonicamid 50% WG 60 gm or Acetamiprid 20% SP 100 gm per acre in 200 liters of water.
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Increase the number of flowers by protecting the crop of moong and urad from white fly

20/04/2020Posted on
Increase the number of flowers by protecting the crop of moong and urad from white fly
  • The whitefly is found sucking on the lower leaves surface.
  • Both nymph and adult sucking juices from plants and stops the growth of the plant, due to which the leaf falls yellow and hence the yield decreases.
  • Whitefly is generally responsible for spreading viral mosaic disease.
  • To control this, spray diafenthiuron 50% WP 200 gm or pyriproxyfen 10% + bifenthrin 10% EC 200 ml or acetamiprid 20% SP 100 gm in 200 liter of water per acre.
  • To increase the number of flowers in green gram and black gram, spray homobrassinolide 0.04% @ 100 ml per acre mixed with 200 liters of water.
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Nature of damage and control of Whitefly

28/12/2019Posted on

Nature of damage and control of Whitefly:-

  • The whitefly is a sap-sucking insect that is often found in thick crowds on the undersides of leaves. When infested plants are disturbed, great clouds of the winged adults fly into the air.
  • Both nymphs and adults damage plants by sucking the juices from new growth causing stunted growth, leaf yellowing and reduced yields. Plants become weak and susceptible to disease.
  • Like aphids, whiteflies secrete honeydew, so leaves maybe sticky or covered with a black sooty mould.
  • They are also responsible for transmitting several plant viruses.
  • Host plants include more than 250 ornamental and vegetable plants. Citrus, squash, potato, cucumber, grape, tomato, Chilli and hibiscus are commonly infested.
  • Control Triazophos 40% EC @ 45 Ml/ 15 litre water or Difenthiuron 50% WP 10 Gm/ 15 litre water or Acetamiprid 20 SP @ 10 Gm/ 15 litre water
    are effective against whiteflies.

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Management of Yellow Mosaic Disease in Okra/Bhindi

24/12/2019Posted on

Yellow Mosaic Disease in Okra/Bhindi:-

  • This is the most important and destructive viral disease in bhindi.
  • The disease infects at all the stages of crop growth and severely reduces growth and yield.
  • The disease is transmitted by whitefly.
  • The characteristic symptoms of the disease are a homogenous interwoven network of yellow veins enclosing islands of green tissues.
  • Initially, infected leaves exhibit only yellow coloured veins but in the later stages, the entire leaf turns completely yellow.
  • The fruits of the infected plants exhibit pale yellow colour, deformed, small and tough in texture.

Control-

  • Remove and destroy disease-affected leaves/plants from crop fields to avoid secondary spread.
  • Parbhani Kranti, Janardhan, Haritha, Arka Anamika and Arka Abhay can tolerate yellow vein mosaic.
  • Do not use high fertilizer during plant growth.
  • Do not roted okra with other hosts of virus.
  • If possible, choose early planting to the controlling of yellow mosaic virus disease.
  • Keep sanitation while using any tools that are using in crop.
  • Use 4-5 sticky trap/acre to the controlling of whitefly infestation.
  • Spray imidacloprid 17.8% SL 80 ml/acre for the controlling of whitefly.
  • Spray dimethoate 30% EC 250 ml/acre of water.

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Control of White fly in Green Gram

20/04/2018Posted on

Control of White fly in Green Gram:-

  • Nymph and adults suck the cell sap from the leaves. The affected leaves curl and dry.
  • The affected plants show stuned growth. White flies are also responsible for transmiting yellow vein mosaic virus or leaf curl disease.
  • 4-5 foliar spray of Dimethoat 30 ml/pump or thaimathoxam 5 gm/pump or Acetamiprid 20% SP 15 gm/pump at 10 days interval.

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Control of White fly in Okra

26/02/2018Posted on

Control of White fly in Okra:-

  • Nymph and adults suck the cell sap from the leaves. The affected leaves curl and dry.
  • The affected plants show stuned growth. White flies are also responsible for transmiting yellow vein mosaic virus or leaf curl disease.
  • Soil application of Carbofuran 3 G 20 Kg/ha at the time of sowing.
  • 4-5 foliar spray of Dimethoat 30 ml/pump or thaimathoxam 5 gm/pump or Acetamiprid 20% SP 15 gm/pump at 10 days interval.

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