262 
Journal of Agricultural Research 
Vol. XXVI, No. 6 
one and the same variety. The name Salzer’s Prizetaker is incorrectly 
applied to this variety, inasmuch as the original variety of this name 
has brown chaff and white kernels. There is also another variety 
known as Red Cross (belonging to the Red May group) which has brown 
chaff and red kernels, and which is resistant or only slightly susceptible 
to the rosette disease. For these reasons the name Harvest Queen 
has been adopted, this being the name under which the variety is most 
often grown. 
RESULTS OBTAINED 
The plants emerged in a few days after sowing, a good stand was 
obtained, and the plants were very vigorous. No signs of the rosette 
disease could be detected in the autumn and the plants passed into the 
dormant period in good condition. However, conspicuous differences 
developed early in the spring and continued throughout the season. 
As usual, several varieties proved very susceptible, a few* proved only 
slightly susceptible, and the remaining large number of varieties proved 
highly resistant to rosette. 
The first symptom to appear, as in previous years, was the retardation 
in development of the plants. Excessive tillering followed and at a 
later stage stunting was apparent, accompanied by an abnormally dark 
green color of the leaves. Other symptoms developed subsequently, as 
described more fully by McKinney. 4 The data on the series in Illinois 
were recorded by H. H. McKinney on April 20, 1922. In Indiana pre¬ 
liminary data were taken by H. H. McKinney and H. S. Jackson on 
April 21, 1922, and final data were taken by J. B. Kendrick and R. W. 
Webb on May 14, 1922. The results are given in Tables I and II, which 
include the final data only. 
VARIETIES SUSCEPTIBLE TO ROSETTE 
The susceptible varieties, arranged according to classes, are presented 
in Table I. The Cereal Investigations (C. I.) accession number, or 
other source of seed, and head descriptions are given for each variety. 
The percentage of plants infected in each variety was determined on 
the basis of macroscopical symptoms of the disease. 
The relatively small number of varieties that show a high degree of 
susceptibility is very striking. The varieties “Brunswick/’ Nigger, 
Penquite (Velvet Chaff), Missouri Bluestem, Harvest Queen, Selection 
from Indiana Swamp, Fultz (Kentucky Agricultural Experiment Station 
Selection), Miller’s Pride, and Mini Chief are highly susceptible. These 
susceptible varieties represent only 4 per cent of the total number of 
varieties tested. 
These results agree very closely with those obtained in previous years 
and reported by McKinney. 4 However, there are two outstanding 
deviations. For instance, Nigger appeared resistant in 1921 and highly 
susceptible in 1922, and Niagara showed a susceptibility of 70 per cent 
in 1921 and less than 2 per cent in 1922. Although only 4 per cent of 
the varieties reported in this paper are classified as extremely susceptible, 
this represents a greater number of varieties than previously has been 
shown susceptible to the disease. 
4 McKinnby, H. H. op. at. 
