The general gains from weevil poisoning under average, fairly 

 favorable conditions seem to be from 200 to 400 pounds of seed 

 cotton per acre, but owing to variations in degree of weevil injury 

 it is not safe to expect much more than the lower figure. 



Consequently, you should not poison if the «ost of the calcium 

 arsenate, the cost of the labor to apply it, and the depreciation on 

 the dusting machines will total more per acre than the current value 

 of 100 pounds of seed cotton. 



Hand guns should be figured as depreciating 100 per cent in a 

 season and tlie larger machines about 25 per cent. 



WHAT DUSTING MACHINE SHOULD YOU USE? 



Make your acreage allotment according to the following schedule, 

 and buy a surplus rather than shortage of machines, as this will 

 save you money. 



HAXD GUNS. 



Do not allot over 8 acres to one hand gun. 



Do not attempt over 25 acres in one organization with hand guns. 

 Do not supply individual tenants with hand guns and expect each 

 to care for his crop successfully independent of the others. 

 Use hand guns only when no other machine is suitable. 



ON&MULE MACHINE. 



This term is used to describe the new type of one-wheel, one-mule 

 machine which is just being placed on the market. Tt sells at a 

 medium price and is suitable for small farmers. 



This machine will cover from 15 to 20 acres in a night of opera- 

 tion. It should not be allotted more than 60 acres for the season. 



This machine has only two nozzles but will usually cover three 

 rows at a trip. 



CART MACmNE. 



This term is used to describe the two-wheel, two-mule machine 

 which straddles a row of cotton. Tt is the type most suitable for 

 large farmers. 



This machine will cover from 25 to ^^0 acres in a night of opera- 

 tion. 



One of these machines should be allotted not more than 100 acres 

 of infested cotton for the season. 



This machine has three nozzles, l)ut will usually cover four rows 

 at a trip. 



