Mealybugs are reported to be injurious to guava in India, Bangladesh, Taiwan, South Africa, Egypt, Pakistan, Sri Lanka, Hawaii, etc. Nymphs and adults suck the sap from leaves, stem and fruits. In addition, the sticky honeydew excreted by the mealybugs serves as a substrate for the growth of sooty mould interfering photosynthesis. Severe mealybug infestation causes heavy economic losses. Mealybugs are found throughout the year on guava plants but the population was found in greater numbers in summer months (February–June). Most of the insecticides do not provide adequate control of the guava mealybugs due to their concealed habitat and waxy coating over the body. Application of insecticides also eliminates the important naturally occurring bioagents resulting in the outbreak of mealybugs. On the other hand, the parasitoids and predators are able to suppress the mealybugs on guava.


Natural Enemy Methyl Parathion Sooty Mould Percentage Parasitism Heavy Economic Loss 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer India 2016

Authors and Affiliations

  1. 1.Indian Institute of Horticultural ResearchBangaloreIndia

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