Closely related host species and varieties of crop plants may be more susceptible to attack, and may range over wide areas of the land mass and thus create a control problem of great magnitude. It is thus in the public interest that individual countries have legal authority to utilize biological knowledge to prevent the entry and spread of exotic pests injurious to plants. Along with legal authority it is essential that resources in competent technical staff and laboratory facilities are available to translate the biologically significant discoveries into more effective programs. Quarantine security for international markets is very important for horticulture products and industry, so, current and alternative quarantine treatments involve subsequently.