-10- 
upon the size of the plants and should range from 15 to 25 pounds per acre. 
Extreme care should be exercised to see that the growing tips of the plants are 
well covered with the dust, as the worms feed extensively on the young leaf 
buds before tunneling into the fruit, stem, and vines. 
Pyrethium powder has also proved of some value in the control of these 
pests. The pyrethrum powder should be used in a mixture with clay or talc and 
dusting sulphur, equal parts of the pyrethrum and the diluent being used. 
Cryolite, mixed with clay and finely ground dusting sulphur in the ratio 
of 1 pound of cryolite to 1 pound of clay and 2 pounds of sulphur, may be used 
to advantage in early treatments. In order to avoid danger of poisonous resi- 
dues on the market product, treatment with this material should not be made 
after the fruit has begun to set. 
Calcium arsenate has not proved satisfactory as a poison for the melon 
worm or pickle worm. 
A bellows-type duster is more satisfactory for the treatment of the 
squash crop than a duster of the rotary type because of the method of planting 
and the necessity of applying the material directly to the growing tips of the 
plant. In the case of crops producing extensive vines, a duster of the rotary 
type may be more satisfactory. 
PEPPER WEEVIL 
While the pepper weevil can be controlled by treating the crop at 
regular intervals with undiluted calcium arsenate, or with equal parts of cal- 
cium arsenate and hydrated lime, this method is not to be recommended unless the 
residue can be adequately removed by washing. Excessive applications of calcium 
arsenate may result in heavy infestations of plant lice which are capable of 
causing more crop loss than pepper weevil infestations. Such aphid infestations 
may be controlled with nicotine dust applied alone, or mixed with the calcium 
arsenate. 
For conditions which obtain in California, cultural control is recom- 
mended. This involves complete destruction of pepper plants after harvest, and 
also the clean-up of nightshade plants and eggplants in the vicinity of pepper 
fields, the nightshade being a favorite winter host of the pepper weevil. The 
pepper fields should be plowed at least by January 1, and all nightshade plants 
destroyed by the 10th of January. This gives a period between the destruction 
of the winter host plants and the planting of the seed bed in excess of the time 
that pepper weevils are able to live on other than their normal host plants. No 
experiments have been conducted on the control of the pepper weevil in New Mex- 
ico or Texas, and no recommendations are made for the control of this pest in 
these two areas. 
VEGETABLE WEEVIL 
The vegetable weevil is a pest of vegetable crops in certain sections of 
Alabama, Arkansas, California, Florida, Georgia, Louisiana, Mississippi, and 
Texas. It is also known to occur in Tennessee and South Carolina. The follow- 
ing methods are recommended for its control: 
