FEDERAL HORTICULTURAL BOARD. 605 



uation no more serious than was Hearno in l'.)17. from which district 

 the pink bollworm was completely eradicated with one year's clean-up. 

 Up to October 1. 1922, t\\e only recurrences of the pink bollworm 

 which have been determined have been in three fields on the Rio 

 Grande in the Great Bend district. Necessarily in this area, with 

 the possibilities of reinfestation from Mexico, the pink bollworm 

 may be expected to occur in greater or less numbers any year. 

 Fortunately, this area is a very unimportant cotton district and 

 is isolated from other cotton regions. 



SCOUTING WORK. 



As a basis for the knovv^ledge of the present status of this pest, 

 very intensive inspection has been carried out during the present 

 season in the States of Louisiana, New Mexico, Oklahoma, and 

 Texas, involving a total of nearly 2,000 workdays. This inspection 

 will continue throughout this year, and it is probable that additional 

 points of infestation may be later determined. 



The success or failure of the entire extermination project depends 

 on the thoroughness and efficiency of such scouting and inspection 

 work. In addition to the States listed which are directly concerned, 

 this scouting has been extended to 12 other important cotton States, 

 following up records of possibly infested material, and this work 

 has been so thoroughly done that there is every reason to believe that 

 the pink bollworm has not reached any of these States and that its 

 kno^^^l limits within the United States have been fairly accurately 

 determined. An additional feature of this work is the scouting 

 along the Mexican border in Mexico as a basis for border quaran- 

 tine control. 



CLEAN-UP WORK OF 1921. 



In connection with the infestations found during the year 1921, 

 clean-up operations were carried out as in former years. With re- 

 spect to the new infestations in northern Texas. 802 acres were 

 cleaned in Ellis County and 721 acres in Grayson County. In addi- 

 tion to the work done in northern Texas, the fields in practically 

 the entire Trinity Bay area were cleaned. On account of the very 

 rainy season the acreage in this district had been greatly reduced. 

 The areas cleaned comprise 2,736 acres. The greater availability of 

 labor in 1921 enabled the department to conduct this work very much 

 cheaper or at almost half the cost of similar work in previous years 

 under war conditions. In 1921 all the work in the Trinity Bay 

 area was done by contract with farmers, whereas in previous years 

 it had been necessary in many cases to obtain labor in the city and 

 transport it and maintain it in the field. The total expenditure for 

 clean-up work in 1921 was S20,115.78 and involved altogether 4,259 

 acres, or a cost of approximately $4.50 per acre. 



FEDERAL PARTICIPATION IN COMPENSATION OF FARMERS. 



The provision for participation with the States in compensation of 

 farmers in noncotton zones given in the act of Congress approved 

 August 9, 1921, has led to the disbursement to the State of Loui- 

 siana the sum of $41,971.04 and to the State of Texas $610 as to 



