
By cts Poel: Sisp ee PN | 
CORN EAR WORM 
The corn ear worm is a green to brown, nearly smooth caterpillar, often mistaken for a cutworm when 
found within the buds. or on the open flowers. 
_ INJURY. It is very destructive to the opening buds, for it feeds on their petals and other parts, 
deforming if fot entirely ruining the flowers. 
CONTROL. If the attacked plants are blooming, spraying is out of the question, but thorough treat- 
ment with a 3 or 5% D.D.T. dust is recommended. After they have worked their way into the 
buds and are found to be feeding on the open flowers, hand-picking is the only remedy. Spray- 
ing the plants with Deenate 50W will control them before the color shows. Parathion fumigation 
will aiso keep them under control. 
CUTWORMS 
The larva is dull-colored and from one to more than two inches in length. They are most active at night, 
and usually spend the day coiled up just under the surface of the soil at the base of the plant. They 
should not be confused with the corn ear worm which cannot be controlled by poison baits. 
INJURY. Cutworms obtain their food by biting out sections of the leaf, stem or bud. Various species 
attack different parts of the plant. The one that is most damaging climbs to the top of the stem 
and eats into the flower buds. 
CONTROL. Those cutworms that feed on the foliage can best be controlled with Deenate 50W spray 
using |!/, pounds to 100 gallons of water. Cutworms are also controlled with a poison bran bait 
which should be distributed very thinly over the bench several consecutive nights. Poison bait 
formula consists of 5 pounds of wheat bran, enough water to moisten mash 4 ounces of Paris 
Green, | pint of molasses and one finely chopped lemon. Parathion has been suggested as a 
good control measure. 
GREENHOUSE LEAF TYER 
It gets its name from its habit of spinning light webs inclosing two or more leaves or tying together 
the parts of a single leaf. This caterpillar is very active, and when disturbed will wriggle off the leaf, 
often backwards, lowering itself on a silk-like strand. 
INJURY. When first hatched, the larvae eat out shallow holes on the under side of the leaves. As 
they grow, they enlarge these holes but usually do not cut through to the upper surface. The result 
is that the leaves become skeletonized. 
CONTROL. The best poison to control the larvae is Deenate 50W, either in the form of a dust or 
a spray. For liquid spray use 1!/. pounds of Deenate 50W to 100 gallons of water. Add two 
pounds of tartar emetic, 4 pounds of sugar to 100 gallons of water. Spray the plants thoroughly 
so that the entire plant is covered. Pyrethrum sprays will kill the worms and not discolor the 
foliage. Regular fumigations with Parathion will keep the leaf tyer under control. 

Corn Ear Worm Damage Leaf Tyer 
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