Florida Agricultural Experiment Station


control. As celery is commonly sprayed with bordeaux for fungus
troubles, lead arsenate can be added (1 pound to 50 gallons of
bordeaux) and this, as well as all other biting insects, be killed.
 OTHER CATERPILLARS.-Several other caterpillars attack
celery; among them are the celery looper (Plusia simplex), an
insect closely related to the cabbage looper, and the celery leaf-
tyer (Phlyctaenia ferrugalis).
 PLANT-LICE
 At least two species of aphids commonly attack celery in
Florida. One is the common garden aphid or green peach-
aphid (Myzus persicae). The other, Macrosiphum lactucae is
much larger. The control measures are the same as those given
under cabbage, page 144.
 OTHER CELERY PESTS
 Other insects injurious to celery are: Flea-beetle (see un-
der beets, page 136) ; cutworms (see under cabbage, page 137);
and cabbage root-maggot (see under cabbage, page 146).

 FIELD CORN AND SWEET CORN
 Sweet corn is attacked by all the common pests of corn and
there are many of them. Some show a decided preference for
sweet corn. Only the more important insects attacking corn
will be considered here.
 CORN EAR-WORM, OR BUD-WORM (Heliothis obsoleta)
 This common pest of cotton, corn, tomatoes, beggarweed,
 etc., prefers sweet corn to any other of its host plants. Early
 in the season the moth lays her eggs on the young corn. The
 early generation of larvae which hatches from these eggs works
 in the corn as a bud-worm." (At least two other caterpillars
 that do very similar damage to corn are known as bud-
 worms.") When mature the caterpillars enter the ground,
 pupate, and in seven days emerge as moths which in turn lay
 their eggs on the silk of the corn which is by this time begin-
 ning to appear. The second generation of larvae on the corn
 eats the silk and then enters the ear and feeds upon the devel-
 oping kernels. Later generations develop on cotton, beans,
 beggarweed, etc. The insect also attacks tomatoes. But whether
 working in corn as the bud-worm" or ear-worm," in toma-
 toes as the fruit-worm," on cotton as the bollworm," or fully
 exposed on beggarweed, it is the same insect. So abundant is
 this pest in Florida that it is almost impossible to find an ear of