Title: Control of insect pest[s] of cabbage and potatoes in the Hastings area
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 Material Information
Title: Control of insect pests of cabbage and potatoes in the Hastings area
Physical Description: Book
Creator: Dobrovsky, T. M.
Publisher: Potato Investigations Laboratory,
Copyright Date: 1955
 Record Information
Bibliographic ID: UF00076274
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: 135057725 - OCLC

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POTATO INVESTIGATIONS LABORATORY MIMNO REPORT 55-3

Control of Insect Pest of Cabbage and Potatoes in the Hastings Area

T. M, Do-:': ivsky


CARBAG C _"T"T AWER AT BROCCOLI

Early control of insect pests of cabbage and related crops is more effective

than control applied after infestations have become heavy. That is especially true

in regard to aphids. Treat cabbage for aphis control when few aphids can be found,

and continue this policy throughout the season.

The waxy nature of cabbage foliage creates sp-.ial problems in the application

of sprays. Generally speaking, dusting cabbage ma, be more effective than spr.ying.

But spraying can also be highly effective rhen properly done. If you spray, be sure

to add a good wetting agent, such as Triton B1956. This preparation is used at the

rate of 2 to 4 ozs. per 100 gallons of spray.

Control Program with Dusts

2% Parcth ...1 .ai apply 3' lb4, b 3 er ac,- c .ce every start" g wh..n first

aphids or "'1~..... :s" appear.

Add to parathion either 10% toxaphene or 5% DDT dust every two weeks at the rate of

25-30 lbs. per acre starting when the first "cabbage worms" appear.

Stop using toxaphene or DDT 30 days before first cutting. Stop using parathion

2 weeks later. Thereafter, use 1% rotenone dust instead of toxaphene or DDT

for the worms, and fresh 1% TEPP dust instead of parathion for aphids.

Control Program with Sprays

25% Parathion emulsion 1 pint in 100 gallons of water and 2-4 ozs, of Triton B1956

or some other good spreader. Apply once every week starting when first aphids

or budwormss" appear, using 100 gallons of spray per acre,

dd toxaphene or DDT 1 pint of 70% toxaphene emulsion or 1 quart of 25% DDT emul-

sion to each 100 gallons of the above parathion spray once every two weeks,

starting when first "cabbage worms" appear.










Stop using toxaphene or DDT 30 days before first cutting, and stop using parathion

2 weeks later, Thereafter, use 3 Ibs, of 4% or 5% rotenone wettable powder

with 2-4 ozs. Triton B1956 in 100 gallons water instead of toxaphene or DDT

for "worms", and 1 pint of 20% TEPP emulsion with 2-4 ozs. Triton B1956 in

100 gallons of water instead of parathion for aphids. Be sure your nozzles

are able to handle rotenone powder without clogging. If using 40% TEPP,

Sprint per 100 gallons of spray is sufficient. Apply about 100 gallons of

spray per acre,

Table 1.- Common Insect Pests of Cabbage and Related Crops in the Hastings Area and
Recommended Control

Insects Insecticides Amount per Acre and Remarks
_____ ________ Formula

Aphids 2% parathion
dust 20 30 lbs. Stop applying parathion 2 weeks
25% parathion 1 pt./100 gals. water before first cutting,
emulsion 2-4 ozs. Triton B1956
40% TEPP pt./l00 gals. water TEPP can be used up to 24 hrs.
2-4 ozs. Triton B1956 before cutting. TEPP dust is
effective only when freshly made.
Armywoms 70% toxaphene 1 pt./100 gals. water Stop applying toxaphene 30 days
(mostly emulsion 2-4 ozs. Triton B1956 before first cutting. Odor of
seedbed 10% toxaphene toxaphene may persist for some
pests) dust 25 -30 Ibs. time.
72% chlordane 1 pt./100 gals, water Stop applying chlordane 30 days
emulsion 2-4 ozs. Triton B1956 before first cutting.
5% chlordane
dust 25 30 lbs.
Cabbage 10% toxaphene
loopers dust 25 30 Ibs. Stop applying toxaphene 30 days
70% toxaphene 1 pt./l00 gals, water before first cutting.
emulsion 2-4 ozs. Triton B1956
5% DDT dust 20 30 lbs. Stop applying DDT 30 days before
25% DDT 1 qt./100 gals. water first cutting
emulsion 2-4 ozs. Triton B1956
0.75% or 1%
rotenone dust 25-30' bs. For worm control less than
Sor % 3.lbs./100 gals,water 30 days before first cutting,
rotenone .2-4 ozs. Triton B1956
wettable
powder













Insects Insecticides Amount per Acre and Remarks
__Formula

Cabbage 25% parathion 1 pt./l00 gals. water Thorough wetting is essential
webworms emulsion 2-4 ozs. Triton B1956 for good control. Stop apply-
25 DDT 1 qt./.00 gals. water ing parathion 2 weeks (DDT
emulsion 2-4 ozs. Triton B1956 30 days) before first cutting.
2% parathion 1 Cabbage seedbeds and young
dust 20 25 lbs.j. plants in the field are chiefly
5% DDT attacked by this pest. Seed-
dust 25 30 Ibs. filings may need early protection.

'Cutworms 70% toxaphene 1 pt./100 gals. water Triton needed only for foliage
emulsion 2-4 ozs. Triton B1956 sprays. Apply to soil surface
before transplanting. Later,
25% DDT 1 qt./100 gals. water spray plants and soil, direct-
emulsion 2-4 ozs. Triton B1956 ing most spray at lower leaves.
Dusting with toxaphene or DDT,
_______ _or using baits, is helpful.
Diamond- 25% DDT 1 qt./l0 gals, water Young plants usually need early
back emulsion 2-4 ozs. Triton B1956 protection from this pest,
moth 5% DDT
larvae dust 20 25 lbs,

'Imported 10% toxaphene
Cabbage dust 25 30 lbs, Stop applying toxaphene 30 days
worms 70% toxaphene 1 pt,/100 gals, water before first cutting,
emulsion 2-4 ozs. Triton B1956
25% DDT 1 qt./100 gals, water Do not apply DDT later than
emulsion 2-4 ozs. Triton B1956 30 days before first cutting.
5%a DOT dust 20 30 lbs.
0.75% or 1%
rotenone dust 20 30 lbs. For worm control less than
16 0or 5% 30 days before first cutting.
rotenone wet- 3 lbs./l00 gals. water Be sure nozzles will not clog.
table powder 2-4 ozs. Triton B1956 __
Mole 72% chlordane Treatment needed especially in
crickets emulsion 2 qts./l00 gals, water seedbeds, Apply to moist soil
23% aldrin surface a few days before
emulsion 1 gal./100 gals, water planting, disk in.
S23 heptacnlor
emulsion 1 gala/l00 gals. water

Serpentine 25% parathion 1 pt./l00 gals. water
leaf emulsion 2-4 ozs. Triton B1956 Treatments needed usually on
miners 2% parathion I early cabbage.
S dust 20 25 lbs.









CONTROL OF POTATO INSECTS

Complete Program


Soil Insects: Treat soil with 2 lbs. actual aldrin or 2 lbs, actual heptachlor per

acre. If using an emulsion containing 2 lbs. of actual insecticide per gallon,

you need 1 gallon of emulsion in 100 gallons of water. Apply to soil surface,

disk-in, and rebed. Treat 2 3 weeks before planting,

Foliage Insects: Spray: 1 quart of 25% DDT emulsion (containing 2 Ibs, actual DDT

per gallon of emulsion) in 100 gallons of water. Add 1 pint of 25% parathion

(or equivalent) if aphids are hard to control. Apply every 2 weeks of the

spray season.

Dust: Use a mixture of 5% DDT and 2% parathion dust at the rate of 25 30

lbs. per acre. Apply every two weeks,



Table 2. Common Insect Pests of Irish Potatoes in the Hastings Area and Control.


Insects Insecticides Amount per Acre Remarks
(in 100 gals,
__water)

Aphids 25% DDT Allow some spray to reach the
emulsion 1 quart soil for cutworm control.
25 parathion Observe precautions. Use
emulsion 1 pint only when DDT fails.
Cutworms 70% toxaphene When cutworm population is
emulsion 1 pint heavy, spray the soil once be-
25% DDT fore planting; later, direct
emulsion 1 quart some spray at soil each time
Syou apply insecticides.
Leaf-footed 72% chlordane
plant bugs, emulsion 1 pint This group of insects may
green stink 25% parathion build up large populations
bugs emulsion 1 pint some seasons.
erpentine 25% parathion These insects may injure late
leaf-miners emulsion 1 pint crops,


rireworms
and Mole
Crickets


Aldrin emulsion
(2 lbs. actual/gal.)


Heptachlor emulsion
(2 lbs. actual/zal.)


1 gallon


1 gallon


Apply to moist soil 2-3 weeks
before planting, disk-in soon
after application.


--











Precautions


Insecticides are poisons. Some are more violent than others, but all are

dangerous to human life. Even rotenone, if introduced directly into the blood

stream, is toxic to man. It is necessary, therefore, that people who handle in-

secticides and the consumers of produce treated with insecticides be properly pro-

tected. Anyone handling insecticides should follow the safety precautions printed

on the labels of insecticide containers. For the protection of consumers, growers

should observe the precautions given here regarding last applications prior to

harvest.

Parathion and TEPP are good insecticides but they are highly dangerous to man

when used carelessly. They can, however, be handled safely, as demonstrated by the

thousands of people who have applied numerous tons of these poisons without any

accidents, For your own protection, read carefully and observe all safety pre-

cautions printed on the labels of parathion and TEPP containers.




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