Root Mealybugs



Root mealybugs are several small species of mealybugs found below the soil surface, and feed on root and root hairs in numerous plants. They are also called soil mealybugs and subterranean mealybugs. Infestations frequently are not detected as the pests occur in the soil, and populations are quite slow to develop, with 3–6 months occurring before infestations are easily visible. Careful examination of infested roots will reveal white, cotton-like masses. These white masses contain both mature females and eggs. Infected plants become wilted and stunted with foliar yellowing or chlorosis. They are oval shaped (1/16 to 3/16 of an inch long) that look like they have been covered by flour. Because they are white or light grey in colour, they often resemble small grains of rice. These mealybugs have a thin, uniform waxy coating and lack the terminal wax filaments typical of their foliar-feeding relatives. Root mealybugs are slow moving, sac-like mealybugs with pronounced crosswise grooves. They do not have filaments surrounding their body like many of the foliar feeding mealybugs. Root mealybugs pose serious problem to potted and greenhouse plants and also field crops. The species belonging to genera Geococcus, Rhizoecus, Xenococcus, Chorizococcus, Spilococcus, Spinococcus and Chnaurococcus are known to roots of the plants (Table 69.1).


Diatomaceous Earth Infested Plant Paecilomyces Lilacinus Mulberry Plant Mealybug Species 
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Copyright information

© Springer India 2016

Authors and Affiliations

  1. 1.Kerala Agricultural UniversityTrichurIndia
  2. 2.Indian Institute of Horticultural ResearchBangaloreIndia

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