Effect of infestation of Acalitus hibisci (Eriophyoidea: Eriophyidae), a gall forming mite on age and hairs of leaves of Hibiscus vitifolius
2000 - Volume: 41 Issue: 3 pages: 313-316
Acalitus hibisci, a pouch gall forming mite on leaves of Hibiscus vitifolius was studied to find out optimum inoculum size for gall initiation. Size of mites was correlated with size of spaces in between leaf hairs. Susceptibility of the host was correlated with leaf age. Total number of mites per gall increased with the size of gall significantly. Gall of 7 mm diameter was found as the most optimum size to be used as inoculum for gall initiation with minimum incubation period (6.6 days). First leaves on the branch (5 days old), were the most susceptible and produced galls in 6.6 days after inoculation.
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