f)0 ANN TAT. Til-'. 1 '< > KT> OK DKPAli l'.M K.NT OK AGRICULTURE, 1940 
of migratory grasshoppers in the area centering around Amarillo, 
Eat 
The hatch was [ate and prolonged. Heavy precipitation early in 
the season kepi the vegetation green on roadsides and idle Land where 
ilu' hoppers remained feeding. However, after the dose of June, 
hot, dry weather in many areas caused drying of native vegetation, 
and the grasshopper injury to crops increased rapidly. Late in July 
local flights were reported in Montana, North Dakota, and western 
Minnesota. Mass flights of grasshoppers over long distances had 
nol occurred in 1940 up to July. 
Field activities relating to grasshopper and Mormon cricket control 
were combined in December 1939, with headquarters at Denver, Colo. 
CHINCH BUG CONTROL 
As indicated by the Federal-State survey conducted during the 
fall of 1939. chinch bugs developed in outbreak numbers during the 
latter part of the year over a rather extensive area in the southern 
half of Iowa, the northern third of Missouri, southeastern Nebraska, 
the eastern third of Kansas, several counties in northeastern Okla- 
homa, and localized areas in Indiana and Illinois. With an allot- 
ment from the appropriation for the control of incipient and emer- 
gency outbreaks of insects, nearly 2V 2 million gallons of creosote 
were purchased and consigned to 167 counties in these 7 States for 
distribution to farmers for use in erecting and maintaining barriers 
for the protect ion of corn. 
Throughout the infested area excellent cooperation on the part 
of farmers in using creosote supplied by the Federal Government 
was instrumental in saving valuable corn crops. In a few localized 
areas lack of farmer participation and adverse weather conditions, 
which prevented the erection and maintenance of barriers, resulted 
in economic loss. 
EUROPEAN CORN BORER INSPECTION AND CERTIFICATION 
Inspection services for European corn borer certification were avail- 
able during the year through the Japanese beetle and gypsy moth 
inspection corps and by corn borer inspectors stationed in Indiana 
and Michigan to fulfill the requirements of State European corn borer 
quarantines and orders of Arizona, California, Colorado, Georgia, 
Louisiana. Nevada, Oregon. Texas, and Utah. States in which infes- 
tations of the corn borer have been found and throughout which the 
inspection services are available include t ho six New England States 
and New York, New Jersey, Pennsylvania, Delaware. Maryland, Vir- 
ginia, Wesl Virginia, North Carolina. Kentucky, Ohio. Indiana. Illi- 
nois. Michigan, and Wisconsin. Host plants designated in the State 
quarantines are corn, broonicorn, sorghum, sudan grass, chrysanthe- 
mums, asters, zinnias, cosmos, hollyhocks, dahlias, gladiolus, beets 
with tops, celery, beans, rhubarb, and oat and rye straw. 
Certificates issued during the year numbered 86,661, a decrease of 
27 percent from the preceding year. A greater proportion of the 
certificates was issued to cover bulk' shipments rather than individual 
packages, the valuation of the commodities certified bring thus in- 
creased to $205,0000, an increase of approximately 30 percent. The 
