LY 
MOY ame 
fale 
numbers bebwe 
ai 
“sheath of the blade and the stalk. . a 
given.] st} 
Se! 
et yy 
* 
; So 
> As the spraying apparatus produced too wide a stream to apply the iguid 
-. rapidly and effectively to the stalks of Corn, I removed the spraying portion of the | 
nozzle and used the part which produces a very narrow but strong stream (one-six- __ 
teenth of an inch indiameter). The liquid would run down the sialks and between 
the sheath of the blade and stalk, killing instantly the hundreds of insects with 
“which it came in contact. The two rows were sprayed as far as the stream would 
reach oh each side, and then the mule moved on to stop for another application. — 
In this way the Corn was gone over very rapidly. Where a force-pump can be ob- 
~ tained it is better to apply it with this, but the nozzle should be very small,so as to- 
_ . throw a very narrow stream or spray directly against the stalk. If a force-pump 
- ean not be obtained, a common watering-pot, with a narrow nozzle, could be used _ 
-\ very effectively. Several of these could be used, the operators going quite rapidly 
ap) from one stalk or hill to another. ee Pa. 
> x ee There is no reason why all should not get rid of the Chinch Bug on Corn, for % 
hg . | -afailure to kill the bugs would arise from some fault in the application, and the —_ 
. application can be made cheaper than a dressing of the Corn could be made withthe __ 
hoe. ‘ Rie 3): 
sae 
This application was made late in June, and Mr. Stroud reported fee 
several times later in thefBeason that nothing more had been seen of ~ 
the bugs, and Professor Atkinson, visiting the field October 17,found — 
no Chinch Bugs in the corn-stalks where the emulsion was used, nor in 
the neighboring Crab-grass. Some were found, however, about 40 
rods away in some late Corn, but they were few in number. tule tal 
‘Professor Osborn’s experiments with keroseneemulsions, madedur- 
- ing the summer at our request at Ames, Iowa, are reported by him —- 
, 
= 
ra 
aK as follows: my 
sa A number of trials were made with kerosene emulsion first with a view totesting 
ree i its value under various conditions, and afterward for the sake of checking the dam- ~ i 
‘ sf 
+ age threatened to Corn. ; . 
5 The first trial was made July 15, the emulsion used being the common one, con-~ 
+ sisting of kerosene, soap, and water diluted to about 5 per cent. kerosene. The 
’ pugs were killed very quickly by this application, and great numbers of them. — 
could be reached, but many in particularly secreted places, in folds of leaves and 
under lumps of earth, escaped. Thrown on to the leaves and running down ~_ 
_ between leaf and stall, it dislodged and killed immense numbers. Thrown against ey 
-_ stalks where they were congregated it would quickly dislodge the mass, and while / 
it was impossible to see whether all driven off in this way were suiliciently wet to . « 
killthem, it was certain that most of them were. This application was at the rate © 
of 2bout 1 gallon of emulsion or 12 gallons of the diluted mixture to 5 rows of Corn ~ 
for 32 rods, or what would equal 5 gallons of emulsion, 60 gallons of diluted mix- 2 
ture to the acre, or a cost for material of less than 60 cents per acre. In trials of 7 
the ernulsion diluted to range from 2 per cent. to 7 per cent. of kerosene, less than 
4 or 5 per cent. was found to be unsatisfactory, and at the lowest figure bugs even 
when thoroughly drenched and kept for a time in the fluid were able to recover. 
A mixture (about 2 per cent., possibly a little less) which killed plant lice almost 
instantly, affected Chinch Bugs but slightly, if at all, and they afterward recovered © | 
and lived in confinement for many days. ; EUS uate 
phn 
> 
1 ie an: i ws 
1 
~ “Professor Atiinson has since written that subsequent tests convinced him that 
one part of the emulsion to nine of water made the mixture quite strong enough.— 
j ’ PE 
LAeeay ee Oictes 
