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central part of the State, where the average percentage of 
infested tillers is 36. The infestation varies from as 
low as 1 per cent in Green and ffodaway Counties to as high 
ar 94 per cent in Audrian County; the survey is not yet com- 
plete, and later figures may alter these percentages." 
Kansas E. G. Kelly (July 18). "Slight infestation over the eastern 
half of the State, Sacond or supplementary brood occurred in 
late May and early June." 
Oregon A. L. Lovett. "Generally "below average in abundance. A ";;lts 
active June 1st*" 
L. P. Rockwood (June 25). "At Pleasant Hill, Lne County, 
85 per cent of the plants and 60 per cent of the tillers are 
infested. The second brood of flies emerging the last of 
May increased the infestation in this field. The second 
spring brood was apparently through on June 25." 
GREATER "/HEAT STEM M/GGOTf (llero myza arnericana Pitch) 
Nebraska M. H. Swenk (July 15). '"'During the third week in June the 
injury by the wheat stem maggot which began to be noticeable 
in eastern Kebraska during the second week in June developed 
with much greater intensity, and in several fields was respon- 
sible for a loss of from 1 to 8 per cent. Rye v/as also ser- 
iously injured in some fields. Reports from central counties 
of the State, notably Antelope, Blaine, Dawson, and Phelps 
Counties, indicate that this pest was more numerous and injur- 
ious than in any previous; year. " 
Oregon L. ?. Rockwood (July 3, Special R-port Kb. 15). "Professor 
Lovett and I covered the Grande Ronde Valley ani the whole north 
end of Union County, Ore., very thoroughly with County Agent 
Avery, last week. *7e found the infestation of spring wheat by 
• Teromyza arnericana very serious. 7c estimate it at from 10 to 
80 per cent of the tillers, moreover, in the late-sown spring 
wheat where the percentage of infestation was lightest a new 
brood of flies were ovipositing and will increase the infesta- 
tion materially. We figure a loss of at least one-half of the 
spring wheat crop of Union County, the principal spring wheat 
county of Oregon. The Bureau of Crop Estimates gave an acre- 
age of 34,885, a crop of 697,700 bushels of a value of 
^1,290,000 for spring wheat in Union County last year. It is 
the general opinion in the county that the acreage of spring 
wheat is greater this year than last. yfe ere certain that the 
outbreak extends into Wallowa County, 19,286 acres, 
347,148 bu. 1920 estimate, as we found infested fields to the 
north of Elgin to the county line at the highest point betv/een 
the two counties. I would expect to find it all over the north 
central part of Oregon, eastern Washington, and central I-:-aho 
