Host Plant resistance is one such method and has been adopted in developing plant resistance to a range of plant problems. Plants posses both natural physiological and chemical defence mechanisms.

This can cover an enormous area because not only does technology intrude into every aspect of growing a crop, by the view of it can change drastically with each different farmer.

BACILLUS THURINGIENSIS use as an insecticide for 25 years despite formidable competition from conventional insecticides is largely due to its safety and compatibility.

This review of the literature referring to A. macrospora indicates the extent of current knowledge about the pathogen and the disease it causes.

in the Gwydir Valley where the water resource has been over committed to such an extent that a full allocation of water will only be realized only SO years out of every 100 years.