A(SRI(;U^yUIlAh APPKOPKIATIO.N lUM., 1&24. 1-.. 



and destrovnd, so tliut lUcro w»im vorv litfli* nrrnii;!' in rotten ••• ••■" 

 district. Thftt was a lurky liafiprnin;; and jimt at llu- tinir u 

 was ncMMlod. One of thr results of our nwcarrlj work in M«'m< .. mid 

 I mention it horo simply Imvumsp it af>|)li«'M to thisiTadifation plun is 

 that if you remove all of the cotton iilunts and all of ihr »,iirfn«i. 

 nmterial you ran pot and burn it. wliicli in the oph e-^s wr follow, tin- 

 only remainin': pink hollwonns in the fields will ho tluise thai are in 

 the soil. 



Thev are pressed in with some holl that falls down and j;ets crowded 

 into the «;ronnd or they may rrawl into the proiind. The experi- 

 ments in Me.xico. referred to. indicate that the fiink hollworm larvae 

 will not survive in moist soil hut will survive in drv sfol. In r '■ -n 

 Te.xas. durin*^ the winter, there is more or less rairj and the :, 



moist .so that with the elean-up and the snl)se(juent cleath in the Roil 

 of the })alance of the larvae, due to moisture, it is po.ssihie to do pretty 

 cffe('tiv(> eradication work as the results have seemed to demonstrate. 

 The only unfavorable factor in that year, 1020, was the discovery of 

 two new points of infestation in two counties in northern Te.xas. 

 Immediate steps were taketi to clean-up these districts and the 

 State havinoj — ui the meantime jjiven us a i^ood law ami pood coop- 

 eration — established noncottcm zones in these counties, and full <'on- 

 trol was immediately put into effect. 



Mr. BrciiAXAN. Have you traced the origin of the infestation m 

 those counties i 



Doctor Maulatt. Yes; we know the origin of it in those places. 



Mr. Buchanan. Where did it come from ? 



Doctor Maki.att. It came from seed from Carlsbad, N. Mex., 

 before the infestation atf that point was determined. Not only <lid 

 that seed go to those two place but it went to many other places in 

 Texas and everyone of these places has been under the most tnorough- 

 going inspection for two years, but no pink bolhvorm has been found 

 at any otlier place, so that by this time we feel prettv sure that these 

 two places were the only ones where it got a foothold. In expla- 

 nation it may be said that the infestation at Carlsbad was just 

 beginning, and the chances are that practically all of the seed from 

 Carlsbatl was uninfested. 



COTTON ZONES FREE FROM KUKTHKR INSPECTION. 



Mr. RuciiAXAN. You started this work in lOlS and at that time 

 vou did not have full cooperation but since then you have had it. 

 Now, have any cotton free zones been relcjxsed under your inspection 

 zoning system or transferred from the cotton free system to your 

 inspection svstem ? 



. Doctor Maiilatt. A good many; most of the zones which have 

 been established have been so transferred, and I will come to that in 

 a moment. 



To complete what I was saying about these two counties, aiul the 

 present status in Texas, no infestation has been found the present 

 year, 1922, and the inspection hjis been so thoroughgoing tnat we 

 Delieve we are safe in relincjuishinj^ all noncotton zones in Texas 

 for 192.3 but still maintaining the districts under regulation so that 

 we can control the movement of the cotton. It is all shipped out of 

 the country. There will be a clean-up this fall in the two northern 

 counties as an additional precaution. 



