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Poundage of material per acre . --From 5 to 10 pounds of undiluted sulfur 
per ac"re>' per application should be used when the plants are small. From 20 
to 50 pounds of 25-percent sulfur dust should be used per acre per application 
during the fruiting period of the plants when the regular fruitworm or pinworm 
applications are being made. 
Number of applications. — In fields that are transplanted before June, 
3 or 4 applications of 25-percent sulfur dust made at the time of the fruit- 
worm or pinworm applications should be sufficient. In fields transplanted in 
June or later, it is desirable to make 2 additional applications of undiluted 
sulfur to the small plants at about the third and sixth weeks after trans- 
planting. 
Ordinarily it is not necessary to make special or extra applications of 
sulfur for mite control, as 25 percent of sulfur can be incorporated in the 
regular dust applications for fruitworm or pinworm control. Previous to these 
regular dust applications, cutworms, pinworms, flea beetles, or armyworms 
frequently attack the small plants. In case of such attacks, 25 or 50 percent 
of sulfur can be incorporated in either calcium arsenate or cryolite used for 
their control. 
Joint Control of the Tomato Fruitworm, the Tomato Pinworm, 
and the Tomato Russet Mite 
In the event that both the tomato fruitworm and the tomato pinworm are 
present in injurious numbers in the same field, which is likely to be the 
case in many fields, a cryolite dust mixture containing 70 percent of sodium 
f luoaluminate should be used to control these two species of insects. If the 
tomato russet mite is also present, sulfur should be used as the diluent 
for cryolite in these applications. Four dustings of this mixture should be 
applied. The first three applications should be made at 2-week intervals, 
beginning as soon as the fruits of the main crop begin to set, 20, 30, and. 
40 pounds being used per acre per application. The fourth application should 
be made shortly after the first picking of the fruits for canning, or 
ordinarily about a week or 10 days after the third application. Twenty-five 
pounds per acre of the cryolite dust mixture containing 70 percent of sodium 
fluoaluminate should be applied for this fourth application. The plants 
should be covered thoroughly by the insecticide at each application. 
If the pinworm is not a problem and calcium arsenate can be used in your 
locality without danger of burning the plants, then a dust containing 75 per- 
cent of calcium arsenate and 25 percent of sulfur can be used. To obtain 
control of the fruitworm equivalent to the control obtainable with a cryolite 
dust containing 70 percent of sodium f luoalu-ninate, 30, 40, and 50 pounds per 
acre of the calcium arsenate mixture should be used for the three applica- 
tions, respectively. 
A bait prepared by mixing 9 pounds of corn meal with 1 pound of cryolite 
containing 90 percent of sodium fluoaluminate is effective in the control of 
the fruitworm and cutworms. This material is somewhat cheaper than dusting 
and would be the preferred treatment in localities where the fruitworm is the 
main pest to be controlled, and in localities where the margin of profit is 
small and the cost of treatment is a major consideration. (For rate of 
