CARTER: ILLINOIS TREES: THEIR DISEASES 



95 



Table 1.— (Concluded.) 



Season 



Plant 



Disease 



Material in 



100 Gallons 



OF Water 



K 



2 ^ 

 S o 



:= 



t2 w 5 



r^ te '^ 

 < Z » 



April- 

 June 



May- 

 June 



May- 

 June 



June- 

 July 



Crab apple, 

 hawthorn, 

 mountain 

 ash 



Scab 



Organic mercury 

 {Puratized Agri- 

 cullural Spray, 1 pt., 

 or Coromerc, 1 lb.) 

 or 



Dodine (Cyprex), 1 lb. 



Horse- 

 chestnut, 

 buckeye 



Leaf blotch 



Dodine {Cyprex), 



2 1b. 



or 

 Zineb {Parzale or 



Dithane Z-78), 



VAlh. 



Ash, maple, 

 oak 



Anthracnose 



Organic mercury 

 {Puratized Agri- 

 cultural Spray, 1 pt., 

 or Coromerc, 1 lb.) 

 or 



Copper sulfate, 8 lb. ; 

 hydrated lime, 8 lb. 



Elm 



Black leaf 

 spot 



Organic mercury 

 {Puratized Agri- 

 cultural Spray, 1 pt., 

 or Coromerc, 1 lb.) 

 or 



Dichlone {Phygon XL), 

 1 lb.. 



2-4 



2 3 



14 



10-14 



10-14 



14 



June- 

 July 



June- 

 July 



June- 

 July 



July- 

 August 



Walnut 



Leaf spot 



Hawthorn Leaf blight 



Elm 



Juniper 



Copper sulfate, 8 lb. ; 

 hydrated lime, 8 lb., 

 or 

 Wettable sulfur, 3 lb. 



Organic mercury 

 {Puratized Agri- 

 cultural Spray, 1 pt., 

 or Coromerc, 1 lb.) 



Cycloheximide 

 {Acti-dione or 

 Aclispray), 5 (380 

 mg.) tablets 



Dodine {Cyprex), 

 Mlb. 



Phloem Special methoxychlor or 



necrosis DDT formulations 



(leaf hopper) (pages 27, 28, 51) 



Rusts Ferbam {Fcrmate or 



Niagara Carbatnate), 

 2 1b. 



2 21 



2-3 14 



35-40 



21 28 



