NC-22 
WM-16 
S-36 
= 304 
III. Regional Research 
Investigations of Oak Wilt. To gain on a region wide 
basis, essential information concerning the fungus causing 
the oak wilt disease, factors responsible for spread, including 
possible insect vectors, information on the longevity of the 
fungus, the effect of the fungus on wood killed by the disease 
and a possible antibiotic relationship of associated wood fungi 
on the oak wilt organism. To formulate control procedures and 
to develop, if possible, silvicultural practices that will permit 
continuous wood lot production even though the disease is present. 
Cooperating stations and agencies: Iowa I-D*, Ohio I-G, 
Cook County Forest Preserve Dist., Ill. Nat. Hist. Serv., Nat. 
Oak Wilt Research Comm., and ARS. 
Maintaining Grain Marketability By Insect Control in Storage. 
. To determine the stored product insects of economic importance in 
the Western Region and the ecological factors responsible for their 
presence or abundance under both dry and humid conditions. To 
evaluate the efficacy of grain protectants, residual sprays and 
fumigants under laboratory and field conditions. 
Cooperating stations and agencies: Ariz., Calif., Colo., 
Idaho, Oreg., Wash., (all contributing projects in a) and AMS. 
Biology and Control of Certain Insects Affecting Forest Trees 
and Unfinished Forest Products in the South. To evaluate damage 
caused by certain forest insects and study their life histories 
and habits. To study the effect of environmental factors on the 
biology of these insects and develop control measures applicable 
to nurseries, forests, woodlots and unfinished wood products. 
Cooperating stations and agencies: Ala. I-D, Miss. I-D, FS. 
*The Roman numeral (and capital letter) refer to the location in the 
summary of the contributing project title and objectives. 
