ROOT-KNOT DISEASE OF TOMATOS. 

 Sodium Cyanide — (cont.). 



57 



Year. 



Plot 71. 



Rate 24 cwt. per acre. 





Year. 



Plot 53. Rate 24 cwt. per acre. 





Before. 



After. 







Before. After. 



1915 





Nothing — 





1 915 



— KMn0 4 X 



1916 





Nothing X 





1916 



X Naphthalene XX 



1917 



X 



> O 





1917 



XX > O 



Year. 



Plot 56. Rate 24 cwt. per acre. 



1 915 

 1916 

 1917 



Before. After. 

 — Nothing XX 

 XX Copper sulphate XXX 



xxx . > 0 



Mercury Bichloride, HgCl 2 . 



Year. 



Plot 23. Rate 8 cwt. per acre. 



1915 

 1916 

 1917 



Before. After. 



xxxx > 0 



O Nothing O 

 O Nothing O 



Year. 



Plot 29. 



Rate 2\ cwt. per acre. 





Before. 



After. 



1915 



XXX 



> O 



1916 



0 



Nothing O 



1917 



0 



Nothing O 



Year. 



Plot 26. Rate 3 cwt. per acre. 



1915 

 1916 

 1917 



Before. After. 

 XX Lvsol O 



O Nothing XX 

 XX ■ > Tr 



Year. 



Plot 52. 



Rate 1} cwt. per acre. 





Before. 



After. 



1915 





Nothing X 



1916 



X 



> Tr 



1 917 



Tr 



— Tr 



Year. 



Plot 73. Rate 1 J cwt. per acre. 



1915 

 1916 

 1917 



Before. After. 



— Nothing — 



— Nothing X 

 X — > 0 



Year. 



Plot 74. Rate cwt. per acre. 



1915 

 1916 

 1917 



Before. 



X 



Nothing 

 Nothing 

 > 



After. 

 X 



o 



Year. Plot 63. Rate 3 cwt. per acre. 



Before. After. 



1915 — — — 



1 916 — Nothing XX 



1917 XX > O 



Year. Plot 64. Rate* 3 cwt. per acre. 



Beiore. After. 



1915 — — — 



1 91 6 — Nothing XX 



1917 XX > O 



