After the harvesting of the crop the hogs should be allowed to feed under trees in which the weevil is present, so as to devour any infested nuts which may have been left on the ground. Poultry may also be of assistance in destroying the insects after they have entered the ground to pupate. It is probable that the larvæ in the nuts may be destroyed by fumigating with carbon bi-sulphide. The nuts should be placed in a tight box, and one-half pound for each five hundred cubic feet of space used, allowing them to remain for forty-eight hours.
The Hickory Shuck Worm (Grapholitha caryana): Sometimes pecan nuts are attacked, as they approach maturity, by a small, white caterpillar, which mines its way through the shucks of the nuts. This caterpillar is the hickory shuck worm, the larva of a small moth.
But little is known of its life-history, and until more is known of its habits, the best advice that can be given is to gather and destroy the infested nuts by burning them.
FOOTNOTES:
[M] Gossard.
[N] Hedrick. (See index of literature).
[O] Gossard. (See index of literature).