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%).