54 AXMWL REPORTS OF DEPARTMENT OF AGRICULTURE, I 
BOO SIKKII.I/ATION 
The sterilization of Beed is undoubtedly the most Important 
in controlling and preventing the spread of the pink bollwornL Then 
gins within the regulated areas are equipped to beat seed to a temperatu 
145 i". a< :i continuous process of ginning. The machinery Is equipped with ■ 
thermograph so that the temperature of the seed Is recorded at all 
During the past season :»T of these machines beated approximately 96,000 tons 
of seed. Seed beated to ;t temperature of 14."» tor l hour, and bandied - 
to prevent contamination, Is permitted to move to any destination. This 
treatment is principally to take care of planting seed, and during the - 
some s or 10 tons of se< d were so treated. 
SUI'HtYlsio.s OF Oil. MIL1 S 
The lack of oil mills in some sections of the regulated areas makes it □ 
sary each year to designate outside mills to handle seed from the regn 
areas. These nulls are equipped with machinery to give the seed a ; 
immediately upon arival. This past season l(> mills were designated, in addition 
to the 11 located within the area. Approximately 70,000 ton- of seed were 
crushed. Several of the mills were equipped with rollers for treating - 
and mill-run linters, and 12.*Js.~> bales were so treated. 
FUMIGATION, COMPRESSION, STEAMING, AM) Koi IKK TREATMENT OF 
Fumigation is now listed as an optional treatment and. as a result, only I 
plants were operated during the season. They treated 59 hales of li' 
hales of linters. Of the linters treated, 361 hales had been imported froi 
Juarez Valley of Mexico. At the 12 compresses operating, 133,376 hales of lint 
and 2. (KM hales of linters were treated. A number of gins have roller equipment, 
and 27. 70S hales of lint were treated by this method. A sieam-pressure machine 
was operated by the state «,f t< xas at Presidio and treated 2,083 hales i^i lint 
ROAD STATIONS 
A road inspection station was again maintained at the junction o\' the Presidio 
aud Ruidosa roads 1% mile- south of Marfa, Tex. This station is o • 
prevent the movement of infested material from the Big Bend area, it was 
Opened September 1. 1934, and closed January 4. 1935, after the field ileal -up 
had practically horn completed in the Big Bend. A total of 1.122 cars 
inspected, from which 11 confiscations were made. These confiscations consisted 
of 'J7 lots of seed cotton, cottonseed, and other materials. ."> ph k sacks, and (> 
pillows and (pnits. all of which were burned, and 7 pick sack- and l mattress, 
Which were treated and passed. (If the 11 confiscations made, 6 were found to 
be infested with the pink DOllworm, 45 living and 25 dead worms being 
These worms were in small lots of seed and so d COtton taken mostly from 
trucks that had been hauling such products. No Living worms bave ever 
found in seed that had been sterilized. 
( OOI'I.KA'IION Wl I II MI.Xli O 
In the Conchos and Juarez Valleys of Mexico, immediately adjacent : 
Big Bend and the 1:1 Paso Valley of Texas, respectively, a considerable amount 
of cotton i- produced which is also Infested with the pink bollworm. M 
officials are endeavoring to control the insect with measures similar to those 
enforced in this country, such as field cleanup, seed sterilisation, and - 
vision of oil mills, in coordinating and carrying out these various 
there Is ;i free Interchange of visits by the Mexican officials and Inspectors of 
this project, and a splendid spirit of cooperation has always been maintain 
THURBERLA WEEVIL CONTROL 
Practically ail cotton produced in the Thurberia weevil area in Arizona is 
grown along the Santa Cruz River Valley, extending trom Nogales, on the 
Mexican border, northward about 100 miles, or to 80 miles above Tucson. For 
the |. qo c,,tt<»ii has been grown In the southern end of the 
area This year, however, a little cotton was planted in Santa Crua County 
