NEMATODE GALLS IN MARKET WHEAT. 3 
in some Virginia wheat. Observations showed the exhibits to be 
nematode galls resulting from plants infected with the nematode 
disease of wheat. These findings were confirmed by the Bureau of 
Plant Industry.’ 
Further inquiry throughout the State of Virginia revealed the 
fact that this single occurrence was not an isolated one, but that 
the disease was established in various sections of the State in such 
magnitude as to affect seriously not only yields per acre but also 
the market grades and milling quality of wheat containing such 
material. At the present time these galls have been found in wheat 
VIRGINIA 
SCALE STATUTE MILES 
——e er 
Fic. 1.—Showing places in the State where the diseased kernels have been found 
either in wheat or in screenings. 
or wheat screenings from merchants or millers in the vicinity of 
Bridgewater, Crofton, Charlottesville, Culpeper, Dayton, Doves- 
ville, Edinburg, Grottoes, Harriston, Harrisonburg, Leesburg, Lacey 
Springs, Lexington, Linville, Lynwood, Lynchburg, Marshall, Mount 
Solon, Mount Crawford, New Market, Purcellville, Port Republic, 
Powhatan, Rural Retreat, Timberville, Union Mills, Weyers Cave, 
and Woodstock, in the State of Virginia. 
Through the courtesy of the Food Administration Grain Corpora- 
tion approximately 3,500 samples of wheat have been analyzed from 
all the important wheat-growing sections in the United States. 
The results of these observations are given in Table 1. 
1JIn this connection acknowledgment is made of the work of Mr. L. P. Byars of the 
Bureau of Plant Industry. ; 
