Title: Potato insect control in the Hastings area
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 Material Information
Title: Potato insect control in the Hastings area
Physical Description: Book
Creator: Workman, Ralph B.
Publisher: Potato Investigations Laboratory,
Copyright Date: 1963
 Record Information
Bibliographic ID: UF00076309
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: 138064006 - OCLC

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Mimeo Report POL 64-4*


POTATO INVESTIGATIONS LABORATORY
Hastings, Florida


October 1, 1963


POTATO INSECT CONTROL IN THE HASTINGS AREA
R. B. Workman, Assistant Entomologist


APHID: Aphids lower potato yields. Do not rely on them to force maturity.
vine killers or other methods to stop growth before harvest.


Use


WIREWORM: Little wireworm damage to potatoes was found last year. Nearly all
tunnel-type damage was caused by tuberworms.

POTATO TUBERWORM: Tuberworms were present in the field for the second year and
about 2-3p of the potato crop showed damage during harvest. A few fields had as
high as 12-16% damage. Tunnels were short and no live worms were found. It appears
that adverse weather conditions and sprays for aphids eliminated the insect before
severe damage was caused. Chief difference between tuberworm and wireworm injury
is the type of tunnel produced in the potato. Tuberworm tunnels have thickened walls
and can be removed intact from the tuber with a knife. Wireworm tunnels cannot be
removed without breakage.

CUTWORM: Cutworms caused more tuber injury in the area than all other insects in
1963. Spraying should continue during harvest, especially, if digging will take
several weeks. Deeper hilling will reduce cutworm injury, tuberworm injury, green-
ing, and insecticide residues by eliminating exposed tubers.

INSECTICIDES RECOMMENDED FOR CONTROL OF IRISH POTATO INSECTS IN THE HASTINGS AREA
SInsecticidel Amount i Min. days
Insect (E=Emulsible) per before Notes
acre harvest
Dimethoate LE -1l pt. 7 Highest numbers of aphids
Aphid Endrin 1.6E 1 pt. 3 are found on the lower
Thiodan 2E qt. No limit leaves.
Tuberworm Endrin 1.6E 1 pt. 3 Weekly sprays when tubers
Thiodan 2E 1 qt. No limit -are present.
CutwormEnrin 1.6E 1 pt. 3 i Spray soil and foliage
SToxaphene 8E 1-2 pts. No limit through harvest.
Endrin 1.6E 1 pt. 3 !Parathion also gives
Plantbug, Parathion 4E -1 lpt. 5 cutworm control.
Stinkbug .
tinkbu, iThiodan 2E 1 qt:. No limit
Worms 2 t -i imit
Toxaphene 8E 1-2 pts. :No limit
SDiazinon 250AG i1 pt. 14 lNumerous at harvest.
Leafminer thn 41 pt. 5 Rarely cause damage.

Diazinon 250AG 2-4 qts. !No limit !Preplant soil treatment.
Wireworm i 2 qt No li Do not use A
Parathion 4E 2 qts. No limit !Do not use Aldrin.


lAdjust the
are used.


amount specified accordingly if other concentrations or formulations


READ AND HEED the safety precautions on the insecticide label at all times. Make
sure that agricultural poisons are not taken for home use.

*Revision of Mimeo Report 63-2
300 copies




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