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The meteorological parameters such as maximum, minimum temperatures, relative humidity, rainfall, wind velocity, hours of sunshine were correlated with mite population and correlation coefficients obtained were revealed that maximum, minimum temperature and wind velocity were positively correlated. Relative humidity, rainfall and sunshine were negatively correlated. The increase in these parameters decreased the mite population. By using the regression equations mean mite population /8mm 2 can be predicted for a given set of meteorological parameters. A unit increase in maximum temperature keeping other parameters constant resulted in increase in population of 1.31/8mm 2 area. In contrast, a unit increase in rainfall resulted in decrease in mite population of 0.83/8mm 2. How to view point the article : Balaji, K. and Hariprasad, Y. (2016). Correlation studies on incidence of eriophyid mite population A. guerreronis with weather parameters. Internat. J.

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Two field trials were undertaken at the Kadavasal village of Chidambaram district during September-December, 2000 and the second trial from January-April 2000 to evaluate the efficacy of botanicals against coconut mite Aceria guerreronis. The treatments were as follows: Phytopalm 5%, Phytopalm 3%, Neem azal 1%, Fortune Aza 1.5%, Neem Seed Kernel Extract 5%, Neem oil 3%, Nochi leaf extract 3%, Calotrpis leaf extract 5% and Monocrotophos 0.04%. The experiment was laid out in a randomized block design with nine treatments replicated three times. Each replication consisted of one palm. Among the botanicals tested, the highest per cent reduction of mite population was recorded in Phytopalm 5% (62.52%), Phytopalm 3% (57.73%), Neem Seed Kernel Extract 5%, (33.50%), Neem oil 3% (31.31%), Neem azal 1% (29.30%) and Fortune Aza 1.5% (26.66%), whereas the least per cent reduction of mite population was noticed in Calotropis leaf extract (17.46%).