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served was about 10%. As is elsewhere reported by Pipal', a striking con- 
trol of loose smut was secured in certain districts with the hot water seed 
treatment. 
SUMMARY. 
The plant diseases of outstanding economic importance as observed during 
the season are as follows: 
Apple: Blotch; scab; frost injury. 
’ Beans: Drouth injury. 
Cabbage: Yellows. 
Cantaloupe: Bacterial wilt; leaf blight. 
Celery: Yellows or stunting disease. 
Cherry : Coccomyces leaf-spot. 
Clover: Anthracnose. 
Corn: Fusarium root rot; local infection of Gibberella saubinetii. 
Cucumber: Bacterial wilt ; mosaic. 
Eggplant: Wilt. 
Maple: Sunscald. 
Onion: Soil salt injury. 
Peach: Leaf curl; black leaf-spot ; frost injury. 
Pear: Fire-blight. 
Pepper: Sunscald. 
Plum: Brown rot; frost injury. 
Potato: Fusarium wilt; Fusarium tuber rot; common scab; Rhizoctonia 
root and stem infection. 
Radish: Black-root. 
Raspberry: Anthracnose; orange rust. 
Rose: Powdery mildew. 
Tomato: Septoria leaf-spot; Fusarium wilt; leaf mold; mosaic; blossom- 
end rot; fruit rot from infected growth cracks. 
Watermelon: Fusarium wilt. 
Wheat: Foot rot; scab; loose smut; frost injury. 
Plant diseases found in 1919 which have not been previously listed by 
Pipal and Osner are as follows: 
Celery: Yellows or stunting disease due to a Fusarium; nematode root 
injury ; bacterial leaf-spot. 
Sweet clover: Ascochyta caulicola. 
Corn: Root rot due to Fusarium; Local infection with Gibberella saubi- 
netii; Stewarts’ disease due to Bacterium stewartit. 
EHggplant: Wilt (cause not determined). 
Kale: Yellows due to Fusarium conglutinans. 
Oats: Seab due to Gibberella saubinetii; blast. 
Onion: Pink root and bulb rot due to a Fusarium; soil salt injury ; 
nematode injury. 
Parsnip: Leaf-spot due to Cercospora apit. 
Peach: Root rot due to Armillaria mellea. 
