DUPLICATE
floW (0
FS 6
Revised February 1965
1965 Weed Control Recommendations
For Commercial Vegetable Crops
CROP
ARTICHOKES
APPLICATION RATE
PER ACRE
FORMULATION
ACTUAL
CHEMICAL
Simazine
4lbs.
Slbs.
Fall
Dinitro amine
Stoddard
3 lbs.
50 gals.
1 gal.
50 gals.
Pre-emergence
Post-emergence
1.6 to 3.2 lbs.
2 to 4 lbs.
Fall or spring
After ferns die down, before
spears emerge, or after cutting
3 lbs.
1.8 to 3.6 lbs.
1 gal.
2 to 4 lbs.
Winter
2,4-D (sodium)
1.6 to 2 lbs.
2 to 2 lbs.
Dalapon
8
lbs.
3 lbs.
10 lbs.
2 qts.
Spring
Spring
Spring
Before spears emerge
At end of cutting season after
cultivation
For field bindweed control
Spot spray for grass control
Before or after cutting
ito 2 gals.
to U gals.
Pre-emergence
Post-emergence
9 to 12 lbs.
Pre-emergence
Pre-emergence
ASPARAGUS
Seedbed
REMARKS
TIME
Apply before broadleaf weeds
have more than 4 true leaves
solvent
Established
fields
Monuron
. (Telvar)
or Simazine
Dinitro amine
Sesone
EPTC
(Eptam)
BEANS, snap and
Dinitro amine
3 toô lbs.
U to 4 lbs.
lima
PCP (sodium)
DCPA
(Dacthal)
8 to 10 lbs.
9 lbs.
12 lbs.
Summer
When most beans are in crook
stage; use low rates for high
temperature
Work into soil immediately by
cross discing or rototilling
Pre-plant
EPTC
(Eptam)
3 lbs.
gal.
(md. Romano)
Lima beans only
Amiben
4 lbs.
2 gals.
Pre-emergence
200 lbs.
200 lbs. in 100
Post-emergence
After beets have 2 or 3 leaves
Apply after weeds emerge but
Snap beans only
BEETS
Salt (sodium
chloride)
Stoddard
solvent
60 to 80 gals.
60 to 80 gals.
Pre-emergence
5.6 to 8.5 lbs.
6 lbs.
6 to 9 lbs.
For grass control
U gals.
Pre-emergence
Pre-emergence
EPTC
(Eptam)
2 lbs.
? gal.
Pre-plant
Work into soil by cross discing
or rototilling
PEBC
(Tillam)
4 lbs.
1 gal.
Pre-plant
CDEC
(Vegadex)
4 lbs.
1 gal.
Immediately
after seeding
6 lbs.
U gals.
After transplanting
After seeding
or trans-
TCA (sodium)
CDEC
(Vegadex)
BROCCOLI
BRUSSELS
SPROUTS
CABBAGE
CAULIFLOWER
gals, water
DCPA
(Dacthal)
before beets emerge
When crop is grown by direct
seeding
Direct the spray to base of
plants
Do not use on brussels sprouts
9 lbs.
12 lbs.
Immediately
after seeding
Requires soil surface moisture
Apply when crop plants have
planting
CANTALOUPES
CUCUMBERS
WATERMELONS
NPA
(Alanap 3)
4 lbs.
2 gals.
CARROTS
CELERY
DILL
PARSLEY
Stoddard
60 to 80 gals.
60 to 80 gals.
Post-emergence
solvent
Linuron
2 lbs.
2 lbs.
Pre-emergence
or
Post-emergence
For carrots only
1 lb.
U lbs. of 80%
Pre-emergence
to weeds and
Use shallow soil incorporation
or follow application with light
irrigation (1 inch) for best re-
3 leaves and weeds have emerged
(Lorox)
PARSNIPS
CORN, sweet
Atrazine
within 3
weeks of
planting
Dinitro amine
4 lbs.
5 lbs. of 80%
6 lbs.
2 gals.
For control of quackgrass or
other perennials
Pre-emergence
May be delayed until just be-
to 1 gal.
Post-emergence
fore corn emerges
When corn is spike stage (1
to 2 inches tall) ; use low rate5
for high temperatures
U lbs.
gal.
Pre-emergence
2 lbs.
gal.
1
Dinitro amine
sults
to 3 lbs.
plus
2,4-DEP
(Falone)
PCP (sodium)
EPTC
(Eptam)
2,4-D amine
8 to 10 lbs.
2 to 3 lbs.
9 to 12 lbs.
? to gal.
Pre-emergence
Pre-plant
.
Work into soil immediately b
cross discing or rototilling
Plant corn shallowly
For control of nutgrass anc
barnyardgrass
lb.
1 pint
Post-emergence
After corn is up and, until lay.
by time
Direct spray to base of plant1
after corn is 1 ft. tall
This is one of a series of Foct Sheets reporting Cooperative Extension work in agriculture and home economics, F. E. Price, director. Printed and distributed in futherance of Acts of Congress of May 8 and June 30,
1914. Oregon State University, Oregon counties, and U. S. Department of Agriculture cooperating.
CROP
GARLIC
CHEMICAL
ACTUAL
REMARKS
FORMULATION
TIME
When weeds
are small
Use low rate on garlic with less
than 3 leaves
Post-emergence
Before garlic is 6 in. high
Pre-emergence
Pre-emergence
Follow application immediately
Potassium
cyanate
7+ to 15 lbs.
8 to 16 lbs. in
100 gals, of
DInjtro
1 lb.
I gal. in 75 gals.
-
water
of water
selective
LEAF CROPS
Beet greens
Collards
Kale
Mustard
Rape
CDEC
(Vegadex)
Spinach
CIPC plus
CDEC
(Vegadex)
Turnip greens
LETTUCE
ONIONS
4 lbs.
1 gal.
1 lb.
I gal.
when crop is seeded in cool wet
weather of late fall
1 pt. CIPC
1 qt. CDEC
Pre-emergence
1 lb. CDEC
CDEC
(Vegadex)
IPC
4 lbs.
1 gal.
P re-emergence
6 lbs.
1
CIPC
4to6lbs.
itoilgals.
,çDAA
(Randox)
6 lbs.
1
PCPA
9 lbs.
12 lbs.
(Dacthal)
Potassium
7+ to 15 lbs.
8 to 16 lbs.
lb. CIPC
to 3 gals.
gals.
cyanate
PEAS
MCPA
to qt.
to lb.
Mixture has given better weed
control in some tests
Follow apdication immediately
with light irrigation
P re-plant or
Pre-emergence
Pre-emergence
or until flag
stage
Pre-emergence
or
Post-emergence
Pre-emergence
Mineral soils
Organic soils (more than 20%
organic matter) or mineral soils
When weeds
are small
Use low rate on onions with
Post-emergence
Apply when peas are 6 to 8
less than 3 leaves
inches and before bloom
Use 12 gals. water
Use before flower buds form
1 lb.
1 qt.
3 to 6 lbs.
to I lbs.
1 to 2 gals.
Ito I gal.
Post-emergence
Pre-emergence
Post-emergence
IPC
5 lbs.
6.8 lbs.
Pre-plant
Before peas bloom; air temperature must be less than 85° F.
For wild oat control work into
DATC
(Avadex)
1+ lbs.
1+ qts.
Pre-plant
For wild oat control work into
Barban
(Carbyne)
lb.
Post-emergence
soil by cross discing
For wild oat control
MCPB
Dinitro amine
PEPPERS
with light irrigation (1 inch)
Lower rate satisfactory only
Diphenamid
soil by cross discing
-
gal.
to 3 leaves
3+ to 6+ lbs. of
3 to 5 lbs.
or
Amiben
Apply when wild oats have 2
4 lbs.
6 to 10 lbs. of
50%
2 gals.
Pre-emergence
or 1 month
after transplanting
Use low rate on light soil
After trans-
Only on transplanted crop
planting
SQUASH
Summer squash ad
Cucurbita pepo
varieties
SWEET
POTATOES
TOMATOES
Amiben
4 lbs.
2 gals.
Pre-emergençe
4 lbs.
2 lbs.
2 gals.
20 lbs. of 10%
Pre-emergence
After last
granular
cultivation
Same as for
cantaloupes
Amiben
CIPC
PEBC
(Tillam)
4lbs.
Igal.
Pre-plarit
Diphenamid
4 to 6 lbs.
5 to 7+ lbs. of
80% or
8 to 12 lbs. of
50%
2 gals.
Tmmediately
Amiben
Solan
4 lbs.
4 lbs.
1 gal.
Immediately after transplanting
Not effective on established
weeds
Work into soil immediately by
cross discing or rototilling
Use low rate on light soil
after seeding
or transplanting
After trans-
Only on transplanted crop
planting
2 weeks after
transplanting
NOTE: 1. The chemical rates suggested are for complete coverage applications. For band applications reduce the quantity of material used proportionate to the area actually sprayed.
For spray applications use 20 or more gallons of water per acre.
Pre-emergence applications of herbicides are more satisfactory if applied to moist soil and followed immediately by a
light irrigation or rain.
The first line of defenac against weeds is the use of
good cultural practices. In fields with known weed
infestations, where possible select crops that respond to
weed-control programs for the weed species present.
Adequate seedbed preparation improves the effectiveness of chemical weed-control programs.
Cultivation is usually the most efficient method of
removing weeds from between rows of vegetable crops,
and herbicide applications should be planned to supplement cultivation practices.
Weeds are killed most easily when conditions favor
germination of weed seeds and rapid plant growth.
Satisfactory results can be expected if herbicide-s are
applied as directed and under normal conditions. Unu-
sual temperatu'es or rainfall at the time of, or soon
after, application of herbicides may cause unsatisfactory results.
Soil characteristics, such as clay content and organic
matter level, strongly influence the effect of some herbicides. Heavier soils usually require higher rates of ap-
plication of pre-emergence herbicides to obtain weed
control than do lighter, sandy soils.
Remember: All agricultural chemicals are dangerous if
not handled properly. Store in locked compartments away
from children and destroy empty containers. Follow manufacturer's safety recommendations as listed on the label.