6S 



PROFESSOR BLACKMAN^S 

 ELECTRO CULTURE EXPERIMENTS. 1919 20. 



Clover. Foster's Field. 



* Control 2 could not be used for second crop of 1919: CoiUio! 3 was therefore added. Control 1 is the same 



for both 1919 cro ps. butwas wired oft for the second crop. Controls 1 and 2 both different in 1920 from 1919. 



NuTK.— Jnd crop 1920 was i)loiighed in. 



WHEAT AND BARLEY. 



Description of Plot^ 



Dressed Grain. 



Yield 

 per .\cre. 

 Bushels. 



Weight 



per Bushel. 



lbs. 



Straw. 



Yield 



per Acre. 



cwts. 



Total 

 Produce. 



Yield 



per Acre. 



lbs. 



Winter Wheat. Great Knott Wood Field, 1919. 



Electro Plots 



Control Plots 

 Cage Plot ... 



(El 



(E2 

 'CI 

 lC2 



212 



219 

 13 9 



l()-8 

 86 



604 

 610 

 6 19 

 62.3 

 60 5 



156 

 18-1 

 11-6 

 13.5 

 120 



3210 

 3596 

 2338 

 2833 

 2108 



Spring Wheat. Great Knott Wood Field, 1919. 



Electro Plots 

 Control Plots 



E3 



E4 



(C3 



C4 



iC5 



8-2 

 8'2 

 106 

 87 

 69 



560 

 562 

 566 

 550 

 551 



107 

 11-3 

 103 

 114 

 98 



1845 

 1988 

 1951 

 1978 

 1676 



Wheat (Yeoman). Foster's Field, 1920. 



Electro Plots 

 Control Plots 



fEl 

 IE2 

 (CI 

 |C2 



188 

 184 

 204 



182 



62 2 

 62 2 

 6:^-5 

 62-1 



190 

 197 

 205 

 17'4 



3448 

 3536 

 3697 

 3245 



Barley. Foster's Field, 1918. 



Electro Plot^ 



Control Plots 



Cage Plot 



(El 

 ^E2 

 Ie3 

 (CI 



C2 

 iC3 



C4 



447 

 474 

 464 

 364 

 52 7 

 363 

 440 



515 

 540 

 534 

 52 -6 

 535 

 540 

 54-9 



22-4 

 251 

 24-4 

 22"1 

 29- 1 

 223 

 263 



4890 

 5458 

 5284 

 4456 

 6162 

 4525 

 5453 



Barley. Great Knott Wood Field, 1920. 



Electro Plots 

 Control Plots 



fE3 

 (E4 

 (C3 



1C4 



317 

 330 

 29-5 

 25-2 



531 

 53 .1 

 53-4 

 533 



17-3 

 18 5 

 160 

 125 



3672 

 3889 

 3410 

 2779 



