The objective of this research was to determine whether the pinewood nematode can colonize all coastal wood species and to develop heat and/or chemical treatments to eliminate it from infected lumber. Much of the effort in this project was expended in developing the proposal for the cooperative research program entitled "The use of heat treatment in the eradication of PWN and its vectors from softwood lumber". Two major pieces of work required in preparation for this proposal were as follows: the development of the experiment design and statistical analysis necessary to demonstrate the reliability of the pasteurization process; and, the selection and testing of a model for analyzing the results of the heating studies on different wood species and different thicknesses of lumber.