THE MONTHLY BULLETIN. 



221 



comparatively i lature seeds had developed. On field No. 2 the 



mustard showed a killing of approximately 90 per cent, and the small 

 grain plants were unharmed. Fields with an infestation as heavy as 

 was found on these areas could be sprayed twice with good results. 

 onee when the grain is very young and again a1 a later date 



Cost of Spraying. 



The enst of spraying amounts to approximately $2.00 an acre. This 

 however, depends upon the character of the land, the facilities for 

 reloading, and the proximity of a water supply. 



A 100- or 200-gaUon tank- on the spray wagon will give better satis- 

 faction than a 50-gallon tank, because less time would b<> consumed in 



fcfitCftj 





Fie. 50. — Showing the work in progress. The spray ran be seen issuing as 

 a fine mist at the rear of the machine. (Original.) 



loading. On large .inns a water wagon carrying 400 to 500 gallons 

 will also be required. It would also be quite possible to use an orchard 

 spraying machine by making such rigging for the nozzles as would be 

 necessary for the field work. 



Assuming thai the far r did uo1 do his own spraying, aud that he 



would then lor,' have to hire a man and team, the cost of spraying 

 30 acres would itemize as follows: 



Water wagon and teamster $5 00 



1 helper to keep nozzles clean 2 50 



1 teamster and spray wagon 5 00 



Irnn Bnlphate for 30 acres 37 50 



Total $50 00 



