Chemical, physical and biological treatments were tested against the coconut mite,Eriophyes guerreronisKeifer, the most serious arthropod pest of coconuts in St. Lucia and some neighbouring states. None of the treatments resulted in control of the pest which caused up to 31.5% loss of potential yield. The major scope for yield increases did not lie with mite control but rather in improved agronomic practices, which, if allied to replanting with improved and mite resistant cultures, could at least double present yields.