50 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE, Lfl 
Full cooperation was given bj the affected States in applying 
measures designed to control, eradicate, and prevent the spread off 
the white-fringed beetle. Local W. P. A. projects assisted mate- 
rially in emit rol operations. 
MORMON ( RH KKI CONTROL 
Iii cooperation with the States of Colorado. Idaho. Montana. \ 
braska, Nevada, North Dakota. Oregon, South Dakota. Utah, Wash- 
ington, and Wyoming, Mormon cricket control has been carried on 
with funds allotted to the Bureau from appropriation- granted to 
the Department for the control of emergency outbreaks of insect 
pests and plain diseases. In addition to fund- and personnel fur- 
nished by the States, substantial assistance was rendered by other 
Federal agencies and by many counties and communities in the 
infested States. 
During the summer and early fall adult and egg surveys weir 
conducted in the affected area to determine the intensity and ex- 
tent of infestation as a basis for estimating probable control needs 
during the following crop season. More than L8 million acres were 
found to be infested, almost one-third of which were moderately or 
heavily infested, a considerable area being in the vicinity of valuable 
crops. 
A cooperative plan of operation.- was developed under which par- 
ticipating State- agreed to furnish technical assistance, transporta- 
tion and living quarters for laborer-, local hauling, storage, mixing 
plants, new dusting equipment and repair-, harrier metal, and 
motive power for dusters. The Bureau agreed to maintain field 
headquarters for the project, a project leader, supervision and ad- 
ministration, an adequate supervisory staff to plan, supervise, and 
direct control operation-, and to provide oil. dust material-, power- 
duster operators, and warehouse facilities. Subsequent to agreement 
on these general principle-, counties and communities were consulted 
and cooperative programs worked out with them. Various Federal 
agencies, including the Indian Service, the Forest Service, the Soil 
Conservation Service, and the Civilian Conservation Corp-, coop- 
crated in the program. 
The plan of operations was based fundamentally on crop protection 
with Latitude to permit work on area- distant from crop- when danger 
of migrations from such areas to crop land- seemed likely, and also 
for work on areas where eradication appeared to In- possible. 
Cricket- first appeared about mid-March, and early in April control 
work was well tinder way. Late in May and through June, operations 
were in full -way. with a peak of Labor employment of more than 
B50 by t he middle of .line . 
Sodium arsenite dust was most effectively used on the crickets 1>\ 
power, hand, and airplane dusters. Metal harrier, with pit trap-. 
prevented cricket- from entering crop-, and an oil-on-water barrier 
was employed to kill the pe-t- when they attempted to cross streams 
<>r ditches. Extensive field tests were conducted with a bait similar 
io that used for grasshoppers luit consisting <>f sawdust, bran, and 
-odium fluosilicate. This material offers good promise, particularly 
where crickets and grasshoppers ocean- together, where crickets are 
