264 Journal of Agricultural Research v 0 i. xxvi, n 0 . 6 
The following varieties, representing 6 per cent of the entire series, 
showed infection percentages ranging from 1 per cent to 5 per cent, 
and may be classified, for the sake of convenience, as slightly susceptible: 
Kessinger, Selection No. 13631, Niagara, Selection from Indiana Swamp 
(C. I. No. 3334), Red Cross (C. I. No. 5318), Jones Fife, Brown Bearded, 5 
Fultz, Illini Chief (Indiana Station), Pennsylvania Bluestem, Poole, 
and Fultz (C. I. No. 3598). 
The Fultz wheats, noted above in the susceptible and slightly suscep¬ 
tible lists, are strains developed from single plant selections, one at the 
Kentucky Agricultural Experiment Station and the other two by the 
United States Department of Agriculture. The strain of Fultz, C. I. 
No. 5308, is not typical of this variety but is somewhat similar to Harvest 
Queen in appearance. Fultz, C. I. No. 1923, a variety developed by 
mass selection, showed only a trace of disease. Fultz also appears in 
the immune list, but apparently pure, being represented there by a 
number of strains which did not show infection. 
The remaining 13 varieties listed in Table I, also representing 6 per 
cent of the entire series, developed the disease to an extent of less than 
0.5 per cent, and these percentages, with one exception, occurred only 
with the series in Indiana. This slight infection possibly may at times 
be due to slight varietal admixtures present in the seed used. The varie¬ 
ties to which reference is made are: Budapest, Alabama, Currell, Enter¬ 
prise, Fultz (C. I. No. 1923), Honor, Leap, Malakof, Mediterranean (C. I. 
No. 3332 and 3467), Selection No. 131156, and Stoner (Marvelous, C. I. 
No. 3605). Each plant of these varieties in the Indiana series was 
critically examined at the final note taking and there is no question that 
the one or two diseased plants recorded for each variety showed typical 
rosette. It can not be stated definitely as to whether or not the same 
varieties in the Illinois series possessed traces of the disease. At least 
no signs of the disease could be detected at first examination. On 
account of the extremely luxuriant growth of wheat plants in the Granite 
City district, it was very difficult to locate single diseased plants. In 
northern Indiana, on the other hand, the growth was very much less 
luxuriant and the presence of one or two diseased plants in a row was very 
noticeable. 
In general, higher percentages of the disease were obtained in the 
experiments in Illinois than in Indiana. This is in accord with the 
previous results of McKinney 6 and probably is explained on the basis 
of more abundant soil infestation in the case of the Granite City soil 
as shown by the quantity of disease developing in the control variety. 
Although Illini Chief had a considerably higher percentage in Indiana 
than in Illinois, this is not surprising, since this variety has given the most 
inconsistent results of all the varieties tested during previous years. 
In 1920, Illini Chief (from the Alhambra [Ill.] Experiment Station) 
showed the disease in degrees ranging from 25 to 30 per cent; in 1921, 
both the Illinois Agricultural Experiment Station and C. I. No. 5406 
strains of this variety had less than 1 per cent; in 1922, the Indiana 
strain of Illini Chief developed 16 per cent of rosette in both the Illinois 
and Indiana plats. 
6 A bearded wheat with red, glabrous chaff and soft, red kernels imported from Podolia, Russia, in 1910, 
by Office of Foreign Seed and Plant Introduction as S. P. I. No. 28588. 
9 McKinney, H. H. op. cit. 
