iby 
of grain may succumb to their attacks. But usually, outside of an ex- 
tremely limited area, there is a noticeable difference in intensity of at- 
tack as between different fields. In Oklahoma and northward fields 
that have been late sown or that were pastured during the winter 
suffered worst and were the first to be destroyed. It has been fre- 
quently noticed that a field of grain may be totally destroyed, while 
an adjoining field, though seriously injured, will frequently produce a 
partial crop. An investigation of the history of these fields has in- 
variably shown that the result in the latter case is due to fertile soil, 
proper cultivation, and seeding at the proper time. It seems to have 
been almost universally true, outside of the limited area of total 
destruction, that the best farmed fields have suffered the least. This 
does not apply alone to wheat, as the writer observed a field of oats 
near Hutchinson, Kans., that gave promise of a fair yield, where 
nearly the entire oat crop otherwise had been destroyed. The owner 
of this field, who had been obliged to plow up other fields where the 
cultural methods had been the same, expressed his opinion that the 
reason the one field escaped the attack of the * green bug ” to such an 
extent was that it had been for many years in alfalfa, only one crop, 
and that corn, having been taken from it since alfalfa had been 
turned under. He stated that the “ green bug” was at one‘time as 
abundant in this field as in the ones which he had been obliged to 
plow under, but that in the one case the plants had withstood the at- 
tack better and were in better condition when the “ green bugs” 
were overcome by the parasites, and thus able to start growth anew 
and yield to the owner a fair percentage of a crop. 
In extreme western Kansas a field of 10 acres of oats lying adjacent 
to an irrigating ditch, but which had not been irrigated, showed very 
forcibly the effect of irrigation. Along this irrigation ditch was a 
ragged border of vigorously growing oats from 10 to 30 or 40 feet in 
width where the “ green bug” had seemingly done no injury. Be- 
yond this, where the moisture from the irrigating ditch had not 
penetrated, the loss was total. In another case in the same locality 
a part of the wheat in an unirrigated field came up in the fall and the 
rest not until spring; the former was uninjured by “ green bugs,” 
while the latter was killed. While late sowing in Texas will prob- 
ably lessen attack in the fall, it is doubtful if this can be recom- 
mended north of the Red River. November-sown wheat was cer- 
tainly less affected than others in North Carolina. 
If the farmers of the country, instead of being carried away by 
the highly colored newspaper reports of the effect of the introduc- 
tion of a few parasites in their fields, will turn their attention to 
[Cir, 93] 
