CONTKOL OF BOLL WEEVIL IN MISSISSIPPI DELTA. 



45 



in the production of cotton, corn, and oats and a table showing the 

 labor requirements of each operation for each crop. From these the 

 writers have prepared figure 1. This diagram shows not only the 

 period of each operation for each crop but also, by the block system, 

 the labor requirements of each crop. 



In this chart the writers have added a block showing the labor 

 requirements for weevil picking in the same manner. This was 

 figured on a basis of four pickings with the bag-and-hoop, extending 



Fig. 1. 



-Seasonal distribution of field labor in northern Louisiana. Based on 823 acres of cotton, 657 

 acres of corn, and 200 acres of oats. (Original.) 



over the period from June 10 to July 8, making the time interval 

 between pickings about one week. The total acreage in cotton was 

 823 acres. Of course, all of this would not be picked over under 

 normal conditions; particularly since the work would be more or 

 less concentrated on the more heavily infested portions. Conse- 

 quently, it was assumed for the sake of conservatism that only 

 two-thirds of this acreage would be treated, or 548 acres. Extensive 

 observations on the time required for the operation of the bag-and- 

 hoop have shown that about the best which can be expected is an 



