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LIST OF DISEASES. 
Alfalfa (Medicago sativa 1.) 
Downey Mildew, Peronospora Trifoliorum DeB. Tippecanoe, 1915. 
Leaf Spot, Pseudopeziza Medicaginis (Lib.) Sace. Common. 78. 
Rust, Uromyces Medicaginis Pass. Putnam, 1907. ; 
Violet Root Rot, Rhizoctonia Crocorum (Pers.) DC. Referred to 
formerly as R. Medicaginis D.C. St. Joseph, 1915. County agent, J. 
S. Bordner, reported a number of affected spots in one field, each 
spot being as much as 10 feet across and enlarging at the rate of 1 
foot every 30 days during the growing season. So far as known to 
the writer this disease has been reported on alfalfa only from 
Nebraska, Kansas and Virginia. 
Wilt, Sclerotinia Trifoliorum Eriks. Clark, Fulton and Henry, 1914. 
Especially prevalent in Clark county. 
Apple (Pyrus Malus L.) 
Bitter Pit (cause physiological). Common on Baldwin variety. Bald- 
win Fruit Spot, caused by Cylindrosporium Pomi, has been reported 
but no definite determination of it has yet been made. References 
to Baldwin Fruit Spot: 58, 59, 84, 36. 
Bitter Rot, Glomerella rufomaculans (Berk.) Spaul. and von Schr. Preva- 
lent in the southern half of the State. 46, 76, 78, 57, 58, 84, 100, 36, 
40. 
Black Rot, Sphaeropsis Malorwm Peck. Shear’s studies indicate genetic 
connection with Melanops. Prevalent in the southern half of the 
State. 78, 58, 59, 84, 100, 67, 36, 40, 117. 
Blister Canker, Nummularia discreta (Sechw.) Tul. Becoming serious in 
the southern part of the State. 36, 40, 39, 117, 86. 
Blotch, Phyllosticta solitaria EK. & E. Common. 78, 58, 59, 84, 37, 40. 
Brown Rot, Sclerotinia cinerea (Bon.) Wor. Common. 58, 59, 84. 
Crown Gall, Pseudomonas tumefaciens E. F. Smith & Towns. Reported 
serious occasionally on nursery stock. 57, 59, 84, 36. 
Kuropean Canker, Nectria ditissima Tul. Found injurious to nursery 
stock. 57, 58, 59. 
Fire Blight, Bacillus amylovorus (Burr.) DeToni. Common. 76, 78. 
57, 58, 59, 34, 36, 38, 117, 62. See also under Pear. 
