Here's another view oi the barrier planter. 

 H. A. Lovenguth, DeWitt county, shown 

 here, made this one. A com planter run- 

 ner is welded on the under side oi the 

 metal iront and the hollow keel between 

 the two planks will be used to plant the 

 building paper in the soil. 



(Pontagraph Photo.) 



Central Illinois farm adrisers witness a 

 demonstration of the chinch bug paper 

 fence barrier on the W. C. Picken farm. 

 Champaign county. Left to right are J. E. 

 Harris, Champaign county farm adviser: 

 H. B. Petty, Ir., and Dr. G. C. Decker, State 

 Natural History Survey. They are exam- 

 ining the barrier layer as it strings out a 

 fence of creosote-soaked paper. 



(Champaign Courier Photo.) 



DEFENSE 



AGAINST CHINCH BUGS 



Those who plan to use dinitro dust bar- 

 riers may find a device such as this handy 

 to lay the line of potent dust. Farm Ad- 

 visor N. H. Anderson, Logan county, shows 

 the device made from a hollow drum of 

 tin, with a double line of nail holes 

 punched I inch apart. The dust placed 

 in the drum falls through the holes to 

 form a small line a» the operator rolls the 

 drum along. 



(Pantograph Photo.) 



CHINCH bugs planning invasion of 

 corn fields this year are likely to find 

 that Illinois farmers have planned some 

 new defense measures. 



While a dinitro dust barrier is con- 

 sidered the major element in meeting 

 any offensive thrust of chinch bugs in 

 the event weather conditions favor their 

 growth, a vertical creosote-soaked paper 

 barrier has been tried that promises 

 good results. 



This barrier is made from tarred felt- 

 base building paper, soaked in creosote, 

 and placed edgewise in the ground. The 

 paper is cut in rolls 5 inches wide with 

 half of the width in the ground and 

 the other half sticking up from the 

 soil. 



A sled-like machine which can be 

 pulled by a horse or small tractor has 

 been developed for inserting the barrier 

 in the ground. The machine costs 

 about $25 to build and farm advisers 

 have blue prints available for prospec- 

 tive builders. 



After the paper barrier is placed in 

 the ground, the creosote is renewed by 

 using a bucket or can with a small hole 

 punched in one side near the bottom 

 so that a stream of creosote flows out 

 on one side of the barrier. 



H. B. Petty, Jr., of the entomology 

 department of the U. of I. College 

 of Argiculture and the State Natural 



History Survey reports that the paper 

 barrier is not superior to the cfinitro 

 barrier, but in case dinitro dust becomes 

 short the paper barrier will be a use- 

 ful aid. 



Petty points out that the paper bar- 

 rier has two advantages. First, it es- 

 tablishes a vertical wall of several 

 inches in height and bugs are less 

 likely to be swept across by wind or to 

 cross the barrier on leaves or sticks. 

 Second, the paper barrier does not 

 wash out in the rain. 



Post-hole traps have to be dug along 

 the paper barrier in the same manner 

 as when the old creosote barrier was 

 used. Chinch bugs moving along the 

 barrier, fall into these traps, and then 

 have to be killed with kerosene or 

 other materials. Dinitro dust placed 

 along the barrier will also kill the 

 chinch bugs as the material works into 

 their respiratory system and finishes 

 them in several hours. 



Illinois farmers will have some 2 

 million pounds of 4 per cent dinitro 

 dust for use this year and an unnamed 

 quantity of creosote, according to Dr. 

 G. C. Decker, entomologist, Illinois Agri- 

 cultural Experiment Station and the 

 State Natural History Survey. While 

 this is twice the amoui»t available last 

 year, the material will be rationed to 

 make sure that all counties get a fair 

 share. 



L A. A. RECORD 



