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ALFALFA WEEVIL 
Surveys cf major alfalfa districts within the weevils-infested 
territory showed the 1936 season opening with Box Elder, Salt Lake, 
and Sevier Counties, in Utah, and Washoe County, Nev. , having one- 
fifth or less of the alfalfa fields with potentially injurious pop- 
ulations of adult weevils, while one- third of the fields in Jackson 
County, Ore t .,and three-fourths of those in Mesa County, Colo., had 
destructive weevil populations. Spring weather conditions allowed > 
the alfalfa crop to nature "before the weevil attack developed, except 
in western Colorado. In other regions, threatening weather late in 
May and early in June delayed the first harvest, permitting damage 
that otherwise would not have ' occurred. Serious damage occurred only 
in Western Colorado, southwestern Oregon, and in a snail tract, Eagle 
Valley, in Baker County, Oreg. Damage in Utah was light and sonewhat 
"below " normal, occurring in Salt Lake, Box Elder, and Millard Counties. 
Slight danage was reported from Douglas, Lander, and Elko Counties, Nev. 
One field in Sioux County, Nohr., suffered severe damage, No danage 
occurred in infested regions of California and Wyoming. Surveys this 
fall show the najority of fields to have subnormal adult weevil popu- 
lations in all districts except Mesa County, Colo., where three out 
of four fields are nenaced. Other regions likely to experience danage 
in fron 10 to 25 percent cf the alfalfa fields in 1937 include the dis- 
trict comprising Delta and Montrose Counties, Colo., the Upper Snake 
River Valley of eastern Idaho, Box Elder County, Salt Lake County, and 
the district of Sevier and Sanpete Counties in Utah, Jackson County, 
Oreg., and Douglas County, Nev. This outlook is, of course, subject 
to nodification "by the weather next spring. Scouting during the sum- 
mer resulted in new records of infestation in six counties distributed 
among five States; nanely, Eagle County, Colo., Dawes and Box Butte 
Counties, Nehr., Harney County, Oreg., Dagget County, Utah, and Fall 
River County, S. Dak. (the first infestation record in South Dakota). 
The accompanying nap shows the present known linits of alfalfa weevil 
occurrence in the United States, and indicates the areas discovered 
as having "been infested within the past two years. (J. C. Hamlin, 
R. W. Bunn, and W. C. McDuffie, Bureau of Entonology and Plant Quar- 
antine, U. S. D. A.) 
iTATE PLANT BUrt*" 
