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Biotic stress

Cultural Control of Spotted Bollworm

      Cultural Control of Spotted Bollworm

  • Plough deeply to expose resting pupae to hot sun.
  • Avoid use of nitrogen fertilizers at the reproductive stage.

 

Spotted Bollworm in Cotton

Spotted Bollworm in Cotton

Present in many Old World cotton growing areas. In India Earias insulana is noticed in northern part of the country whereas E. vitella is a common pest in southern region. The pest feeds on alternative host plants like Hibiscus, Holyhock, Sunhemp, China rose, bhendi, pundi, Abutilon indicum etc.

Tobacco Caterpillar in cotton

 Tobacco Caterpillar in  cotton

Cosmopolitan and Polyphagous pest attacking rice, tobacco, tomato, maize, citrus, castor, groundnut, legumes and many other vegetables.

Appearance:

Chemical Control of Semilooper in Cotton

Chemical Control of Semilooper in Cotton

  • Spray acephate 75 SP @ 1 g/l or Profenophos 50 EC @ 2 ml/l

 

Cotton Semilooper

Cotton Semilooper

It is a sporadic pest and sometimes causes serious damage to the crop.

Appearance:

Chemical Control of Red Cotton Bug

      Chemical Control of Red Cotton Bug 

  • Spray insecticides like Profenophos 50 EC @ 2 ml/l or chloropyriphos 20 EC @ 2 ml/l or  Acephate 1g/l

 

Red Cotton Bug

 Red Cotton Bug

Found to infest cotton in all cotton growing regions. It is a major pest of cotton in most parts of tropical Africa, tropical Asia, USA and South America . Also attack Hibiscus spp., okra, Abutilon, etc.

Chemical Control of Pinkl Boll Worm

Chemical Control of Pinkl Boll Worm

  • Application of insecticides like Profenophos 50 EC @ 2 ml/l or Thiodicarb @ 1g/l Or acephate @1 g/l.

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