6 BULLETIN 1379, U. S. DEPARTMENT OP AGRICULTURE 



Table 2. — Yields of winter wheat on plats following electrocultural treatment (posi- 

 tive charge), section E, Arlington Experiment Farm, in 1914 





Plat 



■ Yields (pounds) 



Ratio of treated 

 to control 





Shock 



Grain 



Shock 



Grain 



Treated ... 



2,332 

 2,281 



644.8 

 656.5 



} L02 







0.97 











Experiments in 1915. — Wheat was again sown in the autumn of 

 1914. The fall treatment was omitted, owing to bad weather. In 

 1915 the network was charged positively by the Lodge-Newman 

 apparatus twice a day from 4 to 7 a. m. and from 5 to 8.30 p. m., a 

 total of 345 hours. The distance between the cross wires of the net- 

 work this year was 6 feet. The plats were divided at harvest into 

 east and west halves. The yields are shown in Table 3. 



In both plats two bad spots developed on the western halves, in 

 which the grain was much poorer than the average. 



Table 3. — Yields of winter wheat on plat* following electrocultural treatment (posi- 

 tive charge), sect ion E, Arlington Experiment Farm, in 1915 



Plal 



Yields (pounds) 



Shock Grain 



Ratio of treated 

 to control 



Shock 



Grain 



Eastern half: 



Treated 



Control 



Western half: 



Treated 



Control 



Total: 



Treated. 

 Control. 



832 

 822 



7 Hi 

 640 



1,548 

 1,362 



321.5 

 350 



624.5 

 604.5 



1.01 

 1.32 

 1.14 



0.92 

 1.19 

 1.03 



Experiments in 1 916. — In the fall of 1915 winter wheat was again 

 sown, as it was desired to get a test with the network charged 

 negatively, about 45,000 volts, instead of positively as heretofore. 

 A powerful static machine was used, to supply the current, and it 

 was run from 4 p. m. to 8 a. m. daily (totaling 800 hours) during 

 the spring, the fall treatment being omitted. 



The plats were divided into eastern and western halves at the 

 time of harvest and again showed considerable variation. The 

 yields are given in Table 4. 



Table 4. — Yields of winter wheat on plats following electrocultural {negative) 

 treatment^ section E, Arlington Experiment Farm, in 1916 



Plat 



Yields (pounds) 



Ratio of treated 

 to control 





Shock 



Grain 



Shock 



Grain 



Eastern half: 



1,324 

 1,352 



1,204 

 1,092 



2,528 

 2,444 



347.5 

 411.0 



324.5 



| 0.98 







0.85 



Western half: 



Treated 







343.0/ I1U 



672.0|| j ^ 

 754.0 f 



.95 



Total: 



Treated... 



.89 











