ENTOMOLOGY AND PLANT QUARANTINE 
61 
I'laiis for enforcing the regulations during the coming season are somewhat 
different from those followed in the past. Instead of installing sterilizers at 
each gin, large central plants have been built at various points in the area. 
All seed for milling purposes will be treated at these plants, and after it has 
been heated to 155° F. it will be allowed to move to any point. Seed for 
planting will be stored in suitable places and. after the ginning season is 
completed, will be sterilized by the State. All seed, either for milling or 
planting, must be sterilized by October 1. A simple permit system is used 
whereby we have knowledge at all times of the amount of unsterilized seed 
remaining in the district and the person who has the seed. The harvesting of 
the 1937 crop got under way about the middle of June, and a number of the 
large central sterilization plants have been operating very satisfactorily. 
The cotton crop is planted the latter part of January and in February, 
Picking and ginning begins the latter part of June and is largely completed 
by the end of August. Because of the mild climate cotton i)lants are seldom 
killed by frost, but remain alive throughout the fall and winter. Thus under 
usual conditions there would be plenty of fruit to maintain the pink boll worm 
throughout the year. The State has issued regulations that cotton stalks 
are to be destroyed after tlie harvesting .season and not later than October 1. 
There will thus be no material on which the insect can propagate itself during 
a period of some (3 or 7 months. Another point in favor of this plan is that it 
will undoubtedly be of considerable advantage in reducing boll weevil carry- 
over. Farmers, ginners, and other influential citizens are greatly interested in 
the plan, and indications are that it will be carried out satisfactorily. 
SITUATION IN OLDER REGULATED AREAS 
The status of infestation is determined by laboratory inspection of green 
bolls if possible ; otherwise by gin-trash inspection. If infestation can be estab- 
lished by laboratory inspection, gin-trash machines can thus be released for 
work in other areas. In some of the very lightly infested areas this cannot be 
done and it is necessary to do gin-trash inspection each season. In the regu- 
lated area of northern Florida intensive gin-trash inspections were carried on 
and practically all trash produced was inspected. By the middle of October 
ginning was largely completed : and in view of the thorougli in.spections carried 
on with negative results, and the negative results the previous season, the 
area was released from quarantine restrictions on October 14, 1936. In the 
Texas Panhandle results had been negative the previous season, and intensive 
gin-trash inspections were made this year. At three different points a total of 
nine pink bollworm specimens were found, indicating tliat an extremely light 
infestation still existed. In the remaining areas it was found that the status 
of the infestation was about the same as the previous year. 
A summary of the amount and results of the various kinds of inspection is 
given in table 15. 
Table 15. — Sunimanj of in><pcctions for the pink l)o11trorm in regulated areas, 
crop season of 1936 
District 
Gin trash 
Field 
Laboratory 
Bushels 
Pink 
boll- 
worms 
Man- 
days 
Pink 
boll- 
worms 
Sam- 
ples 
Pink 
boll- 
worms 
Northern Florida ' 
Lower Rio Grande Valley, Tex.? 
Texas Panhandle 3 
Pecos Vallev. X. Mex 
Peco? Villpv. Tex 
Big Bend, Tex 
3, 370 
3, 922 H 
10, 986H 
434 
10 


oH 
53 


28 
394 
1,368 

29 
9 
20 
22 


8 
15 



37 
(*) 
89 
34 
4^2 














a 











171 
84H 
132 
62 
20 
28 
289 
330 


385-2 
51 


1 



8, 485 
942 
138 
5 


2 


Hudspeth County, Tex. (southeastern part) 
El Paso Valley, Tex 
Mesilla Vallev, N. Mex 
Tularosa, N. Mex 
Duncan Vallev, Ariz, and N. Mex. 
Safford Vallev, Ariz 
Tucson, Ariz 
Total 
20..')71i/> 
140 
127Vi 

1.206 
9, 573 
' Released from regulations Oct. 14, 1936. 
2 Placed under resiilation Aug. 17, 1936; part of gin-trash inspections made before that date. 
3 Previously listed as Western Extension. 
* Results negative for pink bollworm, but 25 Thurberia weevils found. 
