_— ~<a i aii 8 
70 MISC. PUBLICATION 198, U.S. DEPT. OF AGRICULTURE 
Parks, T. H.—Continued. (878) 
PLANNING A STATE EXTENSION PROJECT IN ENTOMOLOGY. Jour. Econ. Ent. 
11: 157-164. 1918. 
Discussion of educational work in fly control. 
(879) 
FALL PRACTICES TO DESTROY CEREAL CROP INSECTS. Ohio Agr. Expt. Sta. 
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Note on scarcity of fly. 
INSECTS THREATENING THE WHEAT CROP. Ohio Farmer 144 (11) (whole no. 
3731): 3-295. 1919. 
Comments on wheat survey made by Ohio Agricultural Experiment Sta- 
tion, Ghio Department of Agriculture, and Ohio State University; map 
showing fiy-free dates for seeding. 
(881) 
THE HESSIAN FLY DATES. Natl. Stockman and Farmer 44 (23): 662, illus. 
1920. 
Outbreaks in Ohio, Indiana, and Illinois; map showing safe seeding dates. 
(882) 
FLY OUTBREAK IN 1920 ONE OF THE WORST KNOWN. Ohio Agr. Expt. Sta. 
Farm Bur. Monthly 6 (2): 1, illus. 1920. 
Specific outbreak in Ohio in 1919-20; control. 
- (883) 
WHEAT-SOWING DATES TO AVOID HESSIAN FLY. Ohio Agr. Expt. Sta. Monthly 
Bull. 5: 243-246, illus. 1920. 
Heavy infestation of fly; map of flv-free dates with interpretation. 
(884) 
HESSIAN FLY AND THE NEXT WHEAT cROoP. Ohio Farmer 146: 254-255, 
lus. 1920. 
Directions for campaign of prevention; parasites. 
(885) 
HOW DAMAGE OF INSECTS TO WHEAT IS FORECAST. Ohio Agr. Expt. Sta. 
Farm Bur. Monthly 6(10): 1,4. 1921. 
Tilustrated article on percentage of wheat straws infested by fly larvae 
during 1918-20; efforts of farm bureaus to establish late sowing dates. 
(886) 
THE EFFECT OF TIME OF SOWING UPON THE CONTROL OF THE WHEAT SHEATH 
WORM. (HARMOLITA VAGINICOLA DOANE.) Jour. Econ. Ent. 14: 490-492. 
1921. 
Control measures of Mayetiola and Harmolita compared. 
(887 
( 
HESSIAN FLY CONTROL. Ohio Agr. Expt. Sta. Ext. Bull. 18 (12): 1-8, 
lus. 1923. 
Habits; tables of safe sowing dates and results; cooperation. | 
(888) 
FIVE YEARS OF HESSIAN FLY STUDIES IN OHIO. Jour. Econ. Ent. 16: 299-304. 
19238. 
Outbreak in Ohio during 1919; dates of emergence; report on field emer- 
gence stations conducted by Ohio State University and Ohio Experiment 
Station; parasitism. 
(889) 
THE HESSIAN FLY AND THE NEXT WHEAT CROP. Ohio Dept. Agr. Off. Bull. 
16 (1): 55-59. 1928. 
Results from cooperative control in Ohio; table of safe sowing dates by 
counties, with map of average infestation percentage. 
(890) 
FOOLING THE HESSIAN FLY. Ohio Farmer 154: 258. 1924, 
Results in northwestern Ohio from late sowing; fly-free dates. 
