Texas pine forests according to 

 likelihood of infestation by 

 southern pine beetle. The system is 

 used operationally by the Texas 

 Forest Service in determining 

 priorities for continuous monitoring 

 for early recognition and control 

 (Adair and Walker, and Lee, 

 personal communications). Texas 

 A. & M. developed an economic 

 threshold simulation model for 

 individual beetle infestation 

 situations, which is paired with a 

 decision tree to guide control 

 decisions. The technology is now 

 being transferred to State forestry 

 organizations through the South for 

 application (Merrifield, personal 

 communication). 



Mention has already been made of 

 Auburn's research to nearly 

 eliminate nursery stock losses of 

 pine seedlings to fusiform rust. 

 This organism has received much 

 research attention elsewhere. 

 University of Florida forest 

 pathologists and geneticists have 

 studied its epidemiology and the 

 heritability of resistance, and have 

 identified 100 slash pine clones 

 with both good growth and rust 

 resistance characteristics (Stone 

 1983). In 1981, an Integrated Pest 

 Management Cooperative with nine 

 forest industry companies and one 

 State forestry organization was 

 established at Florida to expand 

 research on this and other pest 

 organisms (Schmidt, personal 

 communication). At Louisiana 

 Polytechnic Institute, Fred Jewell 

 is nationally recognized for long- 



term basic research on the 

 mechanism of infection and the 

 mechanism of resistance to 

 fusiform rust and gall rust (Verrall 

 1982). 



Systems Management and 

 Decisionmaking — Forest 

 economists and biometricians at 

 southern universities have 

 combined mathematics, operations 

 research, mensuration, and the 

 computer to produce models for 

 decisionmaking in managing forest 

 systems. One that has had 

 widespread application is the 

 MAXMILLION model developed 

 by Jerome Clutter and his 

 associates at Georgia under a 

 cooperative with 10 forest-industry 

 companies. They produced a major 

 linear programming model for 

 planning the scheduling of forest 

 operations to optimize returns on 

 investment or to minimize costs. In 

 1975 they tested it against 

 conventional planning methods on 

 forest-industry tracts in Florida 

 and Mississippi. It boosted timber 

 productivity by 5 to 7 percent and 

 increased returns on investment by 

 14 to 16 percent. The model is now 

 used throughout the South by a 

 majority of forest-industry 

 companies that own, or control 

 through leases, some 26.7 million 

 acres (10.8 million ha) (Bailey, 

 personal communication; Southern 

 Forest Institute n.d.). 



Environmental Protection — Under 

 section 208 of the Federal Water 

 Pollution Control Act of 1972, each 



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