. Annual report of the North Carolina Agricultural Experiment Station. good use of a carbolic acid emulsion,recommended by Slingerland,x whose formula is as follows: Dissolve one pound of soap in one-half gallon of water, and thor-oughly emulsify with one pint of crude carbolic acid. For use takeone part of the emulsion to fifty parts of water. This emulsion should be applied with a spray pump around onionplants, after first removing the surface soil. It is said to kill themaggots and also repel the parent fly from laying eggs. Unleaehed ashes scattered over the beds just after the onions have
. Annual report of the North Carolina Agricultural Experiment Station. good use of a carbolic acid emulsion,recommended by Slingerland,x whose formula is as follows: Dissolve one pound of soap in one-half gallon of water, and thor-oughly emulsify with one pint of crude carbolic acid. For use takeone part of the emulsion to fifty parts of water. This emulsion should be applied with a spray pump around onionplants, after first removing the surface soil. It is said to kill themaggots and also repel the parent fly from laying eggs. Unleaehed ashes scattered over the beds just after the onions havecome up is also said to repel the parent flies. Infested fields should not be planted to onions the following year,and new seed beds should be placed as far away as possible. INSECTS AFFECTING PEAS. Pea Weevil (Bruchus pisorum, Linn.).(And Other Bruchus spp.). Belonging to the same genus as the Bean Weevil, but differing con-siderably in life history, the pea weevil (B. pisorum) is a common JN. Y. Cornell Expt. Sta. Bui. 78. 48 N. C. AGRICULTURAL EXPERIMENT Fig. 30.—Pea Weevil, Brurhus pisorum : a, beetle ;b, larva ; c, pupa—much enlarged. (Chittenden,Yearbook, 1898, U. S. Dept. of Agr.) pest in stored peas. This species is a little larger (Fig. 30) than thebean weevil described on p. 15 and illustrated in Fig. 7. They differ materially, however,in the number of annualgenerations, for the peaweevil has only one, whilethe other may have , only one larvaof the pea weevil invades asingle pea, and always gainsentrance while the peas aregreen in the field. In otherwords, the pea weevil doesnot breed in dried peas, likethe other species that have been mentioned. The 4-spotted bean weevil (Fig. 8) may infest peas or beans, andunlike the common pea weevil, this species will breed in dried peas,producing successive generations like the bean weevil, hence anyremedy against pea weevils must be one that will destroy all speciespresent. REMEDIES. Fumigation.
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