Grasshopper Control 
21 
tended by a good representation of the community, but the re¬ 
sults obtained were not as satisfactory to the minds of the farm¬ 
ers as they should have been. This was due to the fact that the 
grasshoppers were, in every case, just hatching, thus furnishing 
a fresh supply over a period of time longer than the effectiveness 
of the poison. The hoppers being very small, from newly hatched 
to not over one-half grown, when killed, soon dried and were 
blown away, rendering it almost impossible to find any dead ones, 
and with the increasing supply of newly hatched ones it appeared 
as though the remedy was of no avail. 
It was ascertained that Mr. C. F. Smith had made an applica¬ 
tion of the Kansas formula for bran mash on a small garden tract 
near Trinidad when the hoppers were over one-half grown. Here 
the results were clearly in evidence. Previous to the application, 
the hoppers were in a bean and cabbage garden in alarming num¬ 
bers. Investigation showed these fields free of hoppers. In the 
adjacent, uncultivated, weedy areas they were plentiful, but up 
to the line of poison, or where the bran mash had been spread, they 
disappeared entirely. 
Through the efforts of County Agent E. H. Thomas of the 
San Luis Valley, it was found that several methods of grasshop¬ 
per control were in progress, such as sprays, poison bait and the 
hopper dozer. 
The condition of hatching was about the same as in Trinidad, 
but the hoppers were slightly larger, and the same general opinion 
as to the effectiveness of poisons prevailed. However, the poisons 
were doing their work, but the hoppers dying in secluded places 
made it appear otherwise. 
At the “West Side Farm”, Mr. McArthur had sprayed a fif¬ 
teen-acre tract of alfalfa with Paris green and reported his results 
as negative. Upon a close inspection it was found that the spray¬ 
ing had been very effective. On making various examinations 
thruout the field, it was ascertained that there were, on an aver¬ 
age, 25 dead grasshoppers for each square foot of area. Figur¬ 
ing from the size of the hoppers in question, this gave a total of 
5 bushels of dead hoppers per acre. Mr. McArthur had previously 
stated that, in a previous inspection made by him, he found only 
three dead hoppers. This was due to the fact that he did not know 
where to look for them. However, he admitted that the number of 
live hoppers had decreased materially, but it was his opinion that 
they had migrated to an adjacent field. The apparatus used in this 
experiment was an ordinary barrel spray with a series of 13 noz¬ 
zles attached. (Fig. 7.) 
