Group Title: Mimeo report - Gulf Coast Station, University of Florida - 54-3
Title: The lesser cornstalk borer and its control
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00067630/00001
 Material Information
Title: The lesser cornstalk borer and its control
Series Title: Gulf Coast Station mimeo report
Physical Description: 2 leaves : ; 28 cm.
Language: English
Creator: Kelsheimer, E. G ( Eugene Gillespie ), 1902-
Gulf Coast Experiment Station (Bradenton, Fla.)
Publisher: Gulf Coast Station
Place of Publication: Bradenton Fla
Publication Date: 1954
Subject: Borers (Insects) -- Control -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
Statement of Responsibility: E.G. Kelsheimer.
General Note: Caption title.
Funding: Florida Historical Agriculture and Rural Life
 Record Information
Bibliographic ID: UF00067630
Volume ID: VID00001
Source Institution: Marston Science Library, George A. Smathers Libraries, University of Florida
Holding Location: Florida Agricultural Experiment Station, Florida Cooperative Extension Service, Florida Department of Agriculture and Consumer Services, and the Engineering and Industrial Experiment Station; Institute for Food and Agricultural Services (IFAS), University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 71357370

Table of Contents
        Page 1
        Page 2
Full Text


The publications in this collection do
not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
research may be found on the
Electronic Data Information Source

site maintained by the Florida
Cooperative Extension Service.

Copyright 2005, Board of Trustees, University
of Florida

Gulf Coast Station Mimeo Report 54-3
Bradenton, Florida


E# Gi Kelsheimer

The larva of the lesser cornstalk borer, Elesmopalpus lignosellus (Zeller) is a

slender caterpillar about two thirds of an inch in length. It is found throughout

Fl.ciida feeding upon various cultivated crops such as corn, southern peas, peppe-r,

strawberries, beans, sugarcane and gladiolus. There are several wild host plants;

but a preferred one appears to be nut grass. Damage to plants by the larva boring

into the plant just above or beneath the surface of the soil may cause the bud or

growing pof.nt to die. If the plant is not killed it is left in a stunted, deformed

cctdition incapable of producing a crop.

A wilted plant is usually the first indication that the lesser cornstalk bor,.r

is present. A carefully dug and lifted plant will reveal a silken tube connected

with the entrance hole at the base of the injured seedling. This silken tube covered

with sand and excrement may easily be mistaken for a root of the plant. If this tube

i.s tarn open, the extremely active blusih-gteen larva marked with dark-brownish longi-

tudinal bands is exposed The lani is veif active ahd jumps like a piece of spring

wire. The larva does not remain in its burrow except fo6 feeding, The remainder of

the time is spent in the silken tube.

Larvae may not only burrow into a plant but in the case of a corn plant can

girdle it so that the plant is easily blown over. More than one larva may infest

a plant. Mature larvae construct a silken cocoon covered with sand and excrement

and transform to a pupa. The moth emerges in from one to three weeks depending upon

weather. There ate several generations a year.


Control measures are of no value to a stricken plant. However, measures may be

taken to protect the remaining plants.

The application of DDT or chlordane spray or dust is recommended at the time

the young plants such as corn, beans, southern peas or gladiolus break through the

ground. If chlordane or PDT spray is to be used, it should be applied at the rate

oi 1 /2 pounds actual material (3 pounds of 50 percent wettable powder) to 10(

gallons of water to an acre. The spray boom should be lowered to within 12 to 18

inches of the ground and the spray rig driven so that a sufficient amount of the

coarse spray is directed toward the ground where it will do the most good. The

Tpr:,y rig should be driven so that the ground is wet with the spray. Pressure sh'ooa

be 200 pounds or less. Chlordane or DDT dust is usually applied as a 5 percent cL\2 -

nlation at the rate of 30 pounds per acre by ground application and 50 pounds per

acre by airplane. The 30 pounds is a comparable strength to the spray.

Fertilizer mixtures containing chlordane are of little benefit because the ma-

terial is normally placed in the soil too deep to be effective against surface in-

dects. However, applying fertilizer containing chlordane broadcast over the soil

will prove as effective as spraying or dusting.

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