- 26 - 



111. Analyzing the Penetration of Pentachlorophenol Wood- 



Preserving Solutions , To develop a satisfactory qualitative 

 method to determine presence of pentachlorophenol in wood. 

 55-331-N 



111. The Preservative Treatment of Wood Products for Farm and 



Home Use. 0. A Study of Pressure- Treated Millwork . To 

 determine the effects of a pentachlorophenol water-repellent 

 pressure treatment on millwork under service conditions. 

 For. 55-331-0 



111. Application of Measures for the Control of Oak Wilt in an 



Intensively Managed Forest . To test and demonstrate control 

 measures through intensive application and careful observation 

 in a forest where oak wilt has been prevalent for many years. 

 For. 55-351 (NC-22) 



Ind. A Determination of the Distribution. Rate of Spread, and 



Control of the Oak Wilt Disease in Indiana . (1) Learn prevalence 

 and rate of spread of oak wilt in State; (2) by laboratory methods 

 verify presence of causal fungus in trees suspected of having 

 oak wilt; (3) initiate control procedures in important oak timber 

 areas in which disease is prevalent. 

 Bot., PI. Path. 905 (NC-22) 



Iowa The Study of Oak Wilt Caused by lihdoconidiophora Fagacearum 



Bretz^ To (1) develop better understanding of relationships 

 between causal organism and its host; (2) learn more about 

 characteristics of causal organism; (3) learn how the disease 

 organism travels long distances to cause new infection centers; 

 (4) develop better methods for oak wilt control under forest 

 conditions; and (5) develop methods for oak wilt control under 

 recreational and ornamental planting conditions. 

 Ent., PI. Path., Bot., Zool. 1047 (NC-22) 



La. Preservative T r eatment of Louisiana Timber Species for 



Use in Light Construction . To study (1) relationships between 

 preservative treatments and durability of exterior finishes; 

 (2) relationships between preservative treatments and dimensional 

 stability of wood; (3) effects of preservative treatment on nail- 

 holding ability; (4) effects of preservative treatment on service 

 life of wood used in light construction. 

 For. 904 



Mass. The Nature and Development of Tree Wilt Diseases . To learn 



(1-4) pectic enzymes produced by Graphium ulmi and their role 

 in disease production; effect of weather on tree wilt disease; 

 distribution of the A & B stains of Graphium ulmi; (5) develop 

 a technique for learning degree of resistance of a tree to a wilt 

 without killing the tree. 



Shade Tree Lab. 110 (NE-25) 





