640 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



Good results have also been obtained by flooding the infested field 

 immediately after the removal of the first crop of hay and then, 

 while some of the water is still standing on the field, dragging a 

 heavy plank drag over the surface. This process has come to be 

 known as the " mudding process." 



Many other experiments have been undertaken and are being 

 tested, but at this time it is too early to express an opinion as to 

 their value. The State experiment station, the people, and the rail- 

 ways have cooperated most heartil}^ and have greatly facilitated the 

 work. "While it has not been possible to stamp out the pest at any 

 one point, there seems to be a good prospect that growers will be able 

 to control the insect to the point where they can still produce profit- 

 able crops. The results of the investigation carried on down to the 

 close of 1911 are embodied in Bulletin 112 of the Bureau of En- 

 tomology. 



THE SO-CALLED GREEN BUG. 



The work on the so-called green bug has been practically com- 

 pleted and Bulletin 110 of the Bureau of Entomology, treating of the 

 pest, is now in press. Nothing further remains except to keep the 

 entire southern country under continual surveillance in order that 

 farmers may be warned of impending danger and to carry out such 

 other investigations as may be made necessary by changing agricul- 

 tural conditions or farm operations. 



HESSIAN FLY INVESTIGATIONS. 



The Hessian fly investigations have been continued both in the 

 eastern and western portions of the country, and humidity experi- 

 ments are being carried out in the West. This latter work will of 

 necessity cover a number of years. The progress so far made, how- 

 ever, indicates that wheat grown under dry-land farming may wholly 

 escape attack from this pest. 



THE SOUTHERN CORN ROOT-WORM. 



Field studies of the southern corn root- worm have been carried 

 on at several points in the southern part of the country and our 

 knowledge of its life history is nearly complete. It is intended to 

 carry on a series of field experiments over a large range of country in 

 the Southern States to determine the possibility of evading the 

 ravages of the insect by planting com at certain later dates than 

 those now commonly used throughout the Southern States. A large 

 amount of data has Ijeen accumulated to indicate that protection from 

 the ravages of this insect may lie in this direction. 



THE SOUTHERN CORN LEAF-BEETLE. 



The southern corn leaf-beetle appears occasionally and destroys a 

 great deal of com over large local areas and it has been investigated 

 for several years. There are two or three points of vital economic 

 importance that are still lacking in order to make the information 

 obtained available for the protection of the farmers' crops. The 



