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CEREAL AND FORAGE INSECTS 
Lead arsenate effective in control of cutworms.-—-W. B. Noble, West 
Lafayette, Ind., reports as follows on the use of lead arsenate against 
cutworms: "Lead arsenate was mixed with dry sand, at the rate of 3 pounds 
per bushel, and applied with a fertilizer drill to 1,000 square feet; 
this material was not washed down; greens were watered regularly about 24 
hours after application. Examination 3 days after treatment indicated 
that practically all worms had been killed. This treatment appeared to 
be very effective against the worms and is to be recommended, inasmuch 
as the lead arsenate is reported to reduce weeds and to have a beneficial 
effect on the bent-grass turf as well. The cost of materials is about 
2 cents per square yard. This insecticide is less expensive and easier 
to make and apply than kerosene emulsion." 
Poison bait for grasshoppers.--J. R. Parker, Bozeman, Mont., re— 
ports that "Further work by R. L. Shotwell at Crookston on poisoned bran 
mash consisted of plot and cage method to determine relative values of 
cane and beet molasses in the bait formulae and the relative efficiency of 
sodium fluosilicate versus white arsenic. These experiments were still in 
progress at the end of the month and were being carried on with adult 
grasshoppers. This necessitated larger and more widely separated plots. 
The results, though not yet complete, indicate that quicker kills are ob— 
tained by using the fluosilicate but the total effectiveness over several 
days for this poison is about 10 per cent lower than for the arsenic. In 
other words, the mortality for the fluosilicate is greatest the first 
day after spreading the poison, whereas with the arsenic it is the second 
day, with a greater mortality over the total four days' observation. An 
explanation of this is that for the hoppers that have gorged themselves 
on the fluosilicate mass beyond the lethal dose the effect is quicker and 
recovery more sure from smaller dosages than for those that have fed on 
the arsenic. A lethal dose of sodium fluosilicate acts faster than a le— 
thal dose of arsenic, but the chance of obtaining a lethal dose of fluo- 
Silicate is less than that for arsenic." 
Generic name of alfalfa weevil becomes Hypera instead of Phy- 
tonomus.--According to an opinion expressed by L. L. Buchanan, of tke 
Bureau taxonomic staff, in a memorandum dated August 10, 1932, the generic 
name Phytonomus, which has been in general use in this country for many 
years, must be sunk in favor of Hypera, which has undoubted priority over 
it. Phytonomus can not be retained even as a Subgeneric name for this 
insect, as it is not valid for that purpose. Technical workers are re- 
quested to be governed accordingly. 
H. D. Smith, who left on July 27 for Italy for the summer collect— 
ing drive of parasites of the European corn borer, reports that the in- 
festation in northern Italy is this year much below the average. He 
visited a considerable number of cornfields and found an average infesta— 
tion of 20 per cent, with only one field having an infestation of 63 per 
——————— lel 
