152 
Journal of Agricultural Research 
Vol. XXXI, No. 2 
TESTS ON RELATED SPECIES OF PHASEOLUS AND ON OTHER 
BEAN GENERA 
Lima bean ( Phaseolus lunatus L.).—Along with the varieties of the 
common bean there were included, during one or more of the four 
years of field testing, 21 of the commonly listed American dwarf and 
pole varieties of lima beans and 62 foreign varieties, from 12 different 
countries. The short growing season and other unfavorable con¬ 
ditions for this type of bean at the latitude of Lansing, Mich., pre¬ 
vented the obtaining of reliable comparative data. In general, most 
of the varieties appeared to be more or less susceptible to blight and 
usually showed a slight to moderate amount of anthracnose and 
mosaic. More variation was noted with respect to bacterial wilt, 
the extent of infection ranging from none in the case of Henderson 
and Wood Prolific, to severe in Burpee Bush from both field and 
greenhouse inoculations. 
Runner beans (.Phaseolus multijlorus Willd.) .—Most of the 57 
varieties and strains of runner beans included in the field tests 
developed both anthracnose and bacterial blight to a slight or 
moderate extent and frequently showed traces of mosaic. No signs 
from any of the inoculations with the bacterial wilt organism. 
Tepary beans {Phaseolus acutifolius Gray.).—A selection of both 
white and colored seeded varieties tested in field plots showed rarely 
more than a trace of bacterial blight and a moderate to severe 
amount of anthracnose. No wilt or mosaic was observed. 
Adzuki bean {Phaseolus angularis (Willd.) Wright).—Infection 
slight with bacterial blight and mosaic, and none with anthracnose in 
field tests; severely infected with bacterial wilt in greenhouse tests. 
Mung bean {Phaseolus aureus Roxb.).—Traces of bacterial blight 
in the field; immune to anthracnose but susceptible to wilt in both 
greenhouse and field tests. 
Rice bean {Phaseolus calcaratus Roxb.).—No infection from any of 
the diseases on the two varieties, S. P. I. 46427 and 56072, tested 
in both field and greenhouse; not inoculated with wilt organism. 
TJrd bean {Phaseolus mungo L.).—No infection from greenhouse 
inoculations with the alpha , beta , and gamma forms of CoUetotrichum 
lindemuthianum . Slightly susceptible to bacterial blight, and 
moderately susceptible to bacterial wilt in greenhouse tests. 
Cowpea (Vigna sinensis (L.) Endl.).—Slight to moderate infection 
in field tests with anthracnose and bacterial blight on majority of 15 
varieties from different sources; greenhouse wilt inoculations negative. 
Asparagus bean {Dolichos sesquipedalis , L.).—Anthracnose occa¬ 
sionally very slight on leaves in greenhouse tests; no positive evi¬ 
dence of bacterial blight and wilt; mosaic usually severe. 
Hyacinth bean {Dolichos lablab L.).—Dolique Mongette from 
France, slight mosaic and an undetermined leaf spot resembling 
bacterial blight. 
Jack bean {Canavalia ensiformis (L.) DC.).—No signs of any of the 
four diseases in field tests. 
