ROOT-KNOT DISEASE OF TOMATOS. 



59 



Chlorinated Lime. 



Year. 



Plot 17. Rate 44 cwt. per acre. 



1915 

 1916 

 1917 



Before. After. 



XXX > XXX 



XXX Common salt X 

 X Pyridine X 



1 



Year. 



Plot 37. Rate 25 cwt. per acre. 



1915 

 1916 

 1917 



Before. After. 



X > X 



X Copper sulphate XX 



XX Cresylic acid Tr 



Copper Sulphate. 



Year. 



Plot 9. 



Rate 34 cwt. per acre. 





Before. 



After. 



1915 



X 



> O 



1916 



0 



Nothing Tr 



1917 



Tr 



Twiset X 



Year. 



Plot 56. Rate 35 cwt. per acre. 



1915 

 1916 

 1917 



Before. After. 

 — Nothing XX 



XX > XXX 



XXX NaCN O 



Year. 



Plot 37. Rate 24 cwt. per acre. 





Before. After. 



1915 



X Chlorinated lime X 



1916 



X > XX 



1917 



XX Cresylic acid Tr 



Potassium Permanganate. 



Year. 



Plot 8. 



Rate 26 cwt. per acre. 



1915 

 1916 

 1917 



Before. 

 X 

 O 

 O 



After. 



> O 



Nothing O 

 Nothing X 



Year. 



1915 

 1916 

 1917 



Plot 18. Rate 3 cwt. per acre. 



Before. 

 X > 



After. 

 X 



Plot subdivided — 



Potassium Bichromate. 



Year. 



Plot 22. 



Rate 14 cwt. per acre. 





Before. 



After. 



1915 



XX 



> O ' 



1916 



O 



Nothing O 



1917 



O 



Nothing O 



Year. 



Diseased Subsoils Treated with Elements. 

 Sulphur. Iodine. 



Plot 27. Rate 30 cwt. per acre. 



Before. After. 



1915 xxxx > xxxx 



1 91 6 i XXXX Vaporite XXXX 



191 7 XXXX HgCl, X 



Year. 



Plot 54. Rate 2 cwt. per acre. 



1915 

 1916 

 . 1917 



I 



Before. After. 

 — Nothing XX 



XX > XX 



XX NaCN O 



