626 
Journal of Agricultural Research 
Vol. XXXI, No. 7 
place much more readily, but developed to no marked extent until 
after the products had been held for about two weeks. In every case 
S. intermedia grew fastest and produced most decay at the tempera¬ 
tures just mentioned. 
Jagger (18) found, in his studies of S. minor on lettuce, that this 
species produced a more rapid decay than S. libertiana and that the 
mycelium was less conspicuous in the decaying plants. In the 
writer’s experience these observations hold true for most of the hosts 
S. /A/T£RA4££>/<4 
S.M/A/OR 
S. /-/B£R7/AA/A 
24-HOVR BBR/OBS 
Fig. 3.—Graph showing growth of three species of Sclerotinia on bean pods when held 
at 0° C. for 26 days 
on which cross-inoculation studies have been made, with a few 
exceptions, which might be explained by temperature influences or 
variations in host susceptibility. In an experiment in which fresh 
bean pods were inoculated on freshly cut surfaces and placed in test 
tubes containing 3 c. c. of sterile water and held at 2Cr C., ‘the pods 
which were inoculated with S. minor decayed faster than those in¬ 
oculated with either S. ‘libertiana or S. intermedia . Parallel inocu¬ 
lations of the above experiment were held at 7°, and, as shown in 
Plate 7, A, E, F, J, very good control was accomplished during this 
10-day experiment. 
