POTATO INVESTIGATIONS LABORATORY
Mimeo Report 59-5 October 1, 1958
CONTROL OF INSECT PESTS OF CRUCIFERS IN THE HASTINGS AREA1
R. B. Workman
General Control Considerations
In order to consistently produce cabbage and the other cruciferous crops that
are free from insect damage and contamination, a thorough insect control program
must be conducted. Due to the nature of these leafy vegetable crops, a preventive
approach to the control of insects is generally the best. If insect populations
are allowed to become established, especially in heads of cabbage, then the cause
is frequently lost. In such a control effort, insecticides are the dominant means
to be utilized; however, the important roles of parasites and predators, cultural
methods, climatic influences, and legal aspects should always be kept in mind since
their use can greatly reduce the need for insecticides.
Follow the instructions on the label of the insecticide container to the
This includes the instructions for the safety of the person applying
the insecticide. It pertains to the dosage applied per acre, and to the
established interval that must be allowed between the last application and
harvest in order to assure compliance with residue tolerances. Laxity in
any of these respects fosters needless loss of human life, damage to crop
plants, production expense, liability to federal and state reprimand, and
possible confiscation of valuable farm produce.
If there are questions pertaining to any phase of the use of insecticides,
that are not answered after reading the label carefully, then consult a
specialist in entomology before proceeding.
Such persons should have the needed information at hand or know where
to obtain it and thus avoid complications that may result from careless use
of these poisons.
Wetting Agents and Spreader-Stickers
Due to the waxy nature of cruciferous foliage, special considerations must be
given to the formulation of the insecticides. Dusts are good for use on cabbage,
and sprays are effective, if a good spreader-sticker or wetting agent is added to
the spray. In some cases there is an excess of emulsifying agent in the insecticide
emulsion concentrate, then no spreader-sticker is needed. Use any good spreader-
sticker at the recommended amount given on the attached label.
1Revision of Mimeo Report 58-5
Tabl 1.- Control Program for Insect Pests comon on Cabbage, Cauliflower, and
Broccoli Plants in the Hastings area.
Insecticide aount In Time of last
Insect formulation 100 als ./A appliestion General Coments
or total before harvest
Aphis SFystox (Aemton )-- -------ply ien aphids-U
emlsion concentrate 1-1 pins 2 d appear on cabbage, etc.
(2 lbs. act./gal.) nOne application should
ocatrol aWhide for 1-2
weeks. Rain vill not
affect the effective-
s nes a Handle With Care
Sp hon duet 20-30 lbs. da'sbr ollno
2pW parathion 7 days, cabbage
emulsion concentrate 1-2 pints and cauliflower
Parathion ema lsion Don't need tting
4 lbs. act./gal) .1 pint _ent.
0 W In dayUse wetting agent
'_ 1 TW dust Mu-st .' m. be W r91esh.
Cabbage nrin em son At first signs Use at 14-day intervals
looper (1.6 lbs. act./gal.) 1 pint of heading (cu
and p enrin lust 1e- ,20lbe in of leaves
cabbage j tion t 6 0s 0 yrccoilj e urg heading and
worms YA prthion 7 days, cabbage harvest at 7-day inter-
emulsion concentrate 1-2 pints and cauliflower vals apply just after
each weekly harvest.
1 o to2phene dus 25-3 lbe 6et loopers when iiall
T70 toxalene 7 days and on the outside.
emlsion concentrate 12 pints
5! dust - G30near T days, cabbage;
25* emD lsTions 114 days,broccoll
concentrate 1 urt and cauliflower
M ph a.rin--Vseat 3;4 day inWrval
emulsion 1-2 pints dafor best results.
Sroi eno6 n, ,"b t 3rbws. 3For 7orm control less
ro.enone 0 days than 7 days before
vettable er 4 lbs. O a harvest.
Cutworm Endrlnai lson At first signs of Use at 14-day
(.6 Ibs. act./ .) 1 int heading (cuping intervals.
w endrin dust ibs,. of lees) q
i toxpnM0e p 25-.6 di. 'T o pr tet newly trap.
en 7 days planted cabbage. A
emulsion concentrate 1-2 pints Toaphene bait may
MR d5st Te T7 days caM ge be applied to tops of
25 emulsion 14 days, broccoli rows in the late after-
concentrate 1 quart and cauitflooer, noon.
Leaf- 25% parathion 7 dAys, cabbage A serious pest only
miner emulsie n concentrate 1-2 pints and. pl$flwovepy in certain years.
oi ai.hion dusi _20 _els7 10- dy.sbrocoli
Mole Adrna a 5525% u Apply to soil surface
Cricket Chlordane 4 C 1 quart pferbly before
ISepeor m 0 Il .,"_____ ..planting_.