70 BULLETIN 132-5. U. S. DEPARTMENT OT AGRICULTURE 
Michigan: 
Pettit. R. H. Onion tkrips [Thrip tabaei). Mich. Agr. Exp. Sta., East 
Lansing. Mich. Quar. Bui., v. 6. p. 107-109. Feb. 1924. 
N. Y. Agr. Bull. 110. 1918. 
New York: 
Ellis. W. H. Onions. X. T. ( Stare I Dept Farms and Market-. Albany. 
Munn. M. T. Neck-rot disease of onions. N. Y. Agr. Exp. Sta.. Geneva. 
N. Y. Bui. 437. 1917. 
Ohio: 
Humbert. J. G. Neck-rot of white onions. Ohio Agr. Exp. Sta.. Wooster. 
Ohio. Monthly Bull., v. 1.. p. 176-80. June. 1916. 
Van Pelt. W. Black mold of onions. Ohio Asrr. Exp. Sta.. Wooster. Ohio. 
Monthly Bull., vol. 2. p. 70-6. March. 1919. 
Oregon : 
Lovert. A. L. Onion maggot, Oreg. Agr. Exp. Sta.. Corvallis, Oreg. 
CSr. 37. 1923. 
Pennsylvania: 
Eyer. J. R. Bionomics and control of the onion maggot. Penn. Agr. Exp. 
Sta., State College. Pa. Bui. 171. 1922. 
South Carolina: 
Harkey. F. L. South Carolina grades for Bermuda onions. Clemson Agr. 
CoU.. S. C. Ext. Div. CSr. 51, 1922. 
