used an overhead network to treat seedling grain
plants at Washington, D.C. The network was charged by direct current
•sufficient to give a discharge of 1 X 10 ^ amperes per plant. One
hundred seedlings were planted in each of 48 flats of corn and 24 flats
16
of barley. One-half of the flats were used as controls while the rest
were subjected to an electrical discharge. Treatment was applied in
three ways, (1) only during the day, (2) only during the night, (3) continuously.
The only significant increase observed was with night
treatment of corn. The second year these tests were run Collins concluded
rapid water loss from the flats caused greater variation than the treatment.
The third year growth was determined from total green weight of
the plants, and results showed no difference between treated and controls.