Cost of Plant Introduction-The Expanding Horizons of Crop Diseases

Abstract

The number of diseases which moved inadvertently to
new ecological regions from their original habitats have
increased over the years due to the increased mobility
of men and materials. In spite of the stringent regulations
and considerable investments to prevent entry of Kamal
bunt pathogen of wheat, caused by Tilletia indica, in
to USA, the organism was detected in about 25 years
of its detection in Mexico, indicating inadequacy of
the qurantine efforts.