Spatial Distribution and Sampling Plan for Pink Citrus Rust Mite, Aculops pelekassi (Acari: Eriophyidae) in Citrus Orchard

The dispersion indices, spatial pattern and sampling plan for pink citrus rust mite (PCRM), Aculops pelekassi, monitoring was investigated. Dispersion indices of PCRM indicated the aggregated spatial pattern. Taylor`s power law provided better description of variance-mean relationship than Iwao`s patchiness regression. Fixed-precision levels (D) of a sequential sampling plan were developed using by Taylor`s power law parameters generated from PCRM on fruit sample (cumulated number of PCRM in of fruit). Based on Kono-Sugino`s empirical binomial the mean density per could be estimated from fruit ratio with more than 12 rust mites per : $ln(m)