Popis: |
Considerable interest now exists in understanding how the host tree, pest population, associated microorganisms, and the environment interact to determine if a pest outbreak will occur. However, most research in the past has focused on individual components which determine pest outbreaks. To address management of “pest” stress it will be essential that we develop a better understanding of the repertoire of host defenses, and how genetics and environment interact to control expression of these defense mechanisms. The objective of this chapter will be to (1) bring together information gained through several studies which have attempted to elucidate the interrelationships between host, pathogens, etc. and (2) illustrate how this information can be incorporated into a forest management program to lessen the stress on the residual forest and decrease the susceptibility to pest attack. |