19 
EXPERIMENTS IN DESTROYING “ GREEN BUGS” OVER SMALL AREAS. 
On leaving Washington both Mr. Ainslie and Mr. Phillips were 
instructed to place themselves in the position of a farmer whose grain 
fields were beginning to show the presence of the “ green bug” by 
small deadening spots, and to leave nothing undone or untried that 
would seem to afford relief and save the crop. 
Mr. Ainslie instituted some experiments in the use of a brush drag 
at Summers, Ark., and Mr. Phillips carried out similar experiments 
at Hobart, Okla., but in neither case was the measure sufliciently 
effective to warrant its recommendation. Experiments in rolling 
infested fields with heavy farm rollers were conducted by both of 
these agents, but it was invariably found that this measure was only 
effective on smooth lands. When the seeding is done with a grain 
drill, as most of it is, the plants grow up in the bottoms of shght 
furrows, and the roller comes 
in contact with the ridges only, 
leaving the young plants and 
their inhabitants almost wholly 
untouched. This measure, also, 
is therefore of little practical 
value. 
Mr. Ainslie tried dusting with 
lime and also with sulphur, but 
both substances were ineffective. 
Both Mr. Ainshe and Mr. Phil- 
lips carried out a series of care- Fic. 10.—Winged female of the “green 
ful experiments in spraying with Hi ar eemteae ern anes 
kerosene emulsion and with Ry re. 
whale-oil soapsuds. From these experiments it was found possible 
to destroy 50 per cent or more of the “ green bugs” at an expense of 
about $4 per acre. This treatment, of course, is intended for use only 
where, as seems to be more usual to the southward, the outbreaks of 
the pest originate in spots in the fields. 
Mr. Ainslie also tried covering some of these spots with straw and 
burning it, thus destroying, of course, both grain and “ green bugs.” 
This, too, gave encouraging results, and probably would prove effect- 
ive if applied earlier in the season, when the pest first begins to 
appear and the infested spots are small. 
At Hooker, Okla., Mr. Phillips tried the efficiency of plowing these 
spots under, and as the field in which he was working was isolated 
and the “ green bugs” did not make their way in from without, he 
was able to show conclusively that such outbreaks, under certain 
conditions, may be stopped. 
[Cir. 93] 
