EXTENSION CIRCULAR 62-130: This circular is about different chemicals that control weeds. It is set up as a fold-out chart of multiple types of weeds and their herbicides

Burnside, O.

Furrer, J.

McCarty, M.

English

UNL | Libraries

University of Nebraska - Lincoln
DigitalCommons@University of Nebraska - Lincoln
Historical Materials from University of Nebraska-
Lincoln Extension Extension
1962
EC62-130 Chemicals that Control Weeds
O. Burnside
J. Furrer
M. McCarty
Follow this and additional works at: http://digitalcommons.unl.edu/extensionhist
This Article is brought to you for free and open access by the Extension at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for
inclusion in Historical Materials from University of Nebraska-Lincoln Extension by an authorized administrator of DigitalCommons@University of
Nebraska - Lincoln.
Burnside, O.; Furrer, J.; and McCarty, M., "EC62-130 Chemicals that Control Weeds" (1962). Historical Materials from University of
Nebraska-Lincoln Extension. 3844.
http://digitalcommons.unl.edu/extensionhist/3844
~~~r 
'5 iHE LIBRARY E.C. 62-130 
'85 /l.GRICULTURAL DlVISIO~ 
,_AMERICAN CYANAMID COlv\PAN't 
~ I PRielf€JMLcJaT5 that ~(od: 130 
(. 2-- Control Weeds 
- a guide for 1962 -
~' 0;;;-) r. i \ ·II 0. ~ Burnside, J . D. Furrer M. K. McCarty, ~- W. Bove;,, and G. A. Wicks 
gPR 9 1974 
This ~a£ft r,ives suggestions for weed con-
t~ol baseCI on re~earl:lr't'e~ults at the Nebraska 
AgriculturallE~e~idlent Station and elsewhere. 
We have listed what we believe to be the most 
effective weed killers, and their recommended 
rates and times of application. 
Because of the danger of drift, any user of an 
agricultural chemical must exercise judgment 
when spraying. Do not spray on a windy day. 
Wind may cause poor coverage and excessive 
drift. 
It is hazardous to use agricultural chemicals 
for purposes other than those specified by the 
approved label on the container. The Federal 
Food, Drug and Cosmetic Act, as amended, 
authorizes the seizure of any raw agricultural 
commodity moving in interstate commerce 
which carries a pesticide residue in excess of 
the established tolerance. Read the label care-
fully. Observe the precautions shown on the 
label when handling any chemical. 
Extension Service 
University of Nebraska College of Agriculture 
and U. S. Department of Agriculture 
Cooperating 
E. F. Frolik, Dean; E. W. Janike, Director 
Crop 
Barley 
Corn 
Preem ergence 
Corn 
Postemergence 
Field beans 
O a ts 
Sorghum 
Preem ergence 
Sorghum 
Postemergence 
Soybea ns 
Whea t 
Calibrate your equipment before applying chemicals! 
FIELD CROPS 
Herbicide Lbs active ingr edientL Apply this amount 
2, '1-D amine 
2,4-D es ter 
a traz in e 
2,4-D es ter 
CDAA and 
TCBC 
2,4-D amine 
2,4-D es ter 
atrazine 
EPTC 
2,4-D amin e 
MC P 
C DAA 
pro paLine 
for hea vier 
so il s in 
SE Ne br 
need ed p er acre commercial product 
Y2 to % 
Y4 to ~-'2 
2 to 3 
I to 2 
V2 LO I 
Y4 to ~12 
3 
3 
EJ to 6 
2 
1 to I y2 pt:1 
Y2 to I pt:l 
2. 5 to 3.75 lb 
Atrazine 80\1\!4 
I to 2 qt:l,.t 
5 qt R andox T 4 
I LO 2 ptH 
Y2 to I pt:l 
3.7 5 lb 
Au-aL ine SOW 
2 qt Eptam' 
I pt:J 
I qt:1 
5 to 6 q t R andox4 
2 Y2 lb 
Propazine 80W4 
--------------------------------------
2,4-D amine 
2,4-D es ter 
Application time 
S- lea( to ea rl y boot 
Preemergence2 or 
very earl y pos t-
em ergence when 
usin g atrazin e 
Before co rn is I 8" 
high-over 18" use 
drop nozzles 
Bel'ore weeds 
arc I V2 " ta ll 
Prcplant 
} <i-lea [ to fl ag leaf 
} Pceemecgen ce' 
During the period 
sorghum is 4 to 12 
in ches high 
CDA A !'i w 6 5to6.qt R andox·1 } 
--;-;-------c3:----------=:----:_o_"7'o-_..,--___ Preemerp-en ce~ 
ami ben 6 qt Amiben·1 t-> 
2,4-D amine 
2,4-D es ter 
V2 w % 
y.4 to ~/2 
I to I Y2 pta 
Y2 to l pr:~ 
!'i-lca f to ear ly boo t 
Remarks 
Do no t trea t winter barley in 
th e fall. Spray winter a rinual 
penn ycress and mustards hefore 
April 15. 
A I 3" band appli ca tion will re-
duce the to ta l h erbicide used b y 
two-thirds. Do not use a trazine 
on land tha t will be planted to 
crops o ther than corn or sor-
ghum the fo llowing year. Atra-
zin e m ay carry over in the soil 
and injure following crops. On 
sandy so il use on ly a trazine and 
at the 2 lb r a te. 2,4-D m ay cause 
injury. Preem ergence weed con -
tro l is most sa tis l'actory o n sur-
face plantetl crops anti when 
a pplied to seed b eds free of clods 
and trash. 
La ter appli cations m ay cause 
urittl eness and sta lk brea kage. 
Use lower ra te wh en good grow-
in g conditions exist. 
VVorks bes t when growing con-
eli Lio ns are favor able. Heed 
atrazine usage rem arks above 
on res idu e car ry-over . 
Immedia tely in corpor a te into 
the so il by d o ubl e diskin g. 
Som e injury m ay be expected a t 
an y stage with 2,4-D . 
Band app li cat ions r edu ce h erbi-
cide cos t. R and ox con trois an-
nu al grassy weeds. Propazin e use 
cl ea red for seed production fi elds 
onl y. Preemergence weed co ntrol 
is mos t sa tisfactory on surface 
pl anted crops and when applied 
to seed bed s free of clods and 
trash . Do no t use propaz ine on 
la nd th at will be pl anted to 
crops other th an corn or sor-
ghu m the fo ll owing yea r . 
Spraying before 4" stage may 
inhibit root d evelopment, and 
s pr ay in g du r in g 1 3 " s t age 
through ea rly boo t stage m ay in-
hibit hea d d evelo pment. 
Band a pplications reduce herbi -
c id e cos t. R a nd ox co n tro l s 
ann ua I grassy we eels. Preem er-
gence weed contro l is mos t satis-
fac tory o n surl'ace planted cro ps 
and when a ppli ed to seedbed s 
free of clod s and trash . 
Do no t trea t win ter wheat 111 
th e fa ll. Spray win ter annual 
penn ycress and m ustards before 
April 15. 
PASTURES, RANGES, AND FORAGE CROPS 
Area or use Herbicide Lbs acti\'C ingredient' Apply this amount Applica tion time 
needed per acre commercia l product 
.\l fa lfa , and 
binlsfoot tre-
fo il seedlings 
Cool -season 
EPTC 
d a la pon 
4-( 2,4-DB) 
2,4-D 
2 LO 3 
Y2 to % 
2 qt Epta m~ 
2Y2 to 3% lb 
Dowpon 
2 q t 2 lbj gal 
Butoxone 
or Butyrac 
Prep! ant 
2 to I weeks a fter 
alfalfa emerges when 
grass seed li ngs a re 
less th an 2" ta ll 
\Vhen weeds a re 
; m all 
grass seedlings 
Warm-season 2,4-D y,! to \12 
1 to I \12 pt~ } 
----'"---- ---'-'------ -------------- ----- 2- to ·I-lea f stage \12 lO 1 pt:l 
grass seedlings 
'\ \fa rm-seaso n m onuron or 
grasses for diu ron 
seed atrazine 
Annual broacll ea f 2,·1-D 
weeds in pas-
tures and ranges 
Perennia l broad- 2,4-D 
leaf weeds in pas 
lures and ranges 
3 
3 
Area or use Herbicide Lb, active ingrcdicn t
1 
need ed per acre 
--------------------------
Fence rows and 2,4-D 
roadsides (broild-
leaf weeds) 
Irrigation 
ditch ba n ks 
monuron or 
diu ron 
8 
3.75 lb Spring or fa ll 
Kannex or T elvar before weed 
3.7 5 lb Atra t ine SOW' emergence 
I qt:1 vVhcn weeds arc 
sma ll 
At bud stage of pre-
dom inant weeds-
,\pril for d andelion 
co ntrol 
NON-CROP AREAS 
Ap ply th is amoun t 
comm ercia l p roduct 
---
10 lb Karmex 
or T elvar 
Applica tion tim e 
W cccl hciglt L 
2 to ·J inches 
Soon a ft er ditch es 
a re open 
R emarks 
Incorporate in to the soi l by d ou-
ble di sking. Do no t graze forage 
within 60 d ays of treatment. 
Early injury m ay occur to le-
gumes. 
For annu al grasses . Do no t sell 
first year's crop or feed trea ted 
forage to d a iry cows or animals 
be ing finish ed for sla ugh ter. 
For broadleaf weeds. May be 
mixed with cl a lapon. Do no t use 
trea ted forage for feed. 
f o r broadleaf weeds. 
For seed fi elds only . Atrazine 
does no t contro l fall panicum . 
Do no t use during year of estab-
lishmen t. H erbicides less e fiec-
tive in heavy pl ant res idues. 
Appl y in April for penn ycress 
and other mustards. 
Annual trea tment for 2 to 3 
yea rs ma y be necessa ry. 
Rem ar ks 
R epeat trea tments may be neces-
sa ry. Add 1 lb j acre of 2,4,5-T for 
wild rose and horse nettle. 
Use eno ugh water to insure good 
coverage. Use screens of 50 mesh 
or larger . Agita tion required. 
' imazinc or 
a trazin e 
(j 7 y2 lb Simazine SOvV Before weeds appear li se enough water to insure goocl 
or Atrazin e S0'\1\f o r soon thereafter coverage. Agitation required. 
So il steril a nt for diuron or I 0 to 20 
drives, 
storage 
areas, 
industrial 
sites, 
parking lcJLs, 
fence lines, 
etc. 
monuron 
simazine or 
atrazine 
e rbon 
monuron-
TCA 
1 () 
·10 to SO 
Mixtures 
bora Le-mon u ron 
ch lora tc- bora te Fo llow 
m anufac-
tu rer 's 
ch !orate-borate- recom-
mencla-
_m,_o_n_u,_r_o_n ___ ti on s. 
snnann e-
amitrol 
.-, ilvex-
dalapon 
12 .. 5 to 25 lb T elvar 
or Karmex 
-------
12.5 lb Simazin c SOW 
or 1\trazin e 80\V 
10 to 20 gal 
Novon co ncentrate 
or Baron 
I lb Urox 
per sq rd 
Ureabor 
Polybor-chlorate, 
Chlorax, and 
Atlacide 
Chlorea 
.\mi zi ne 
Carlon 
Follow 
n1anu-
f'anurer 's 
recom-
m endations 
Earl y weed growth 
LAWN AND TURF WEEDS 
Weed 
Broad lea f weeds 
such as dande-
lion , ragweed , 
fi e ld bindweed , 
and pl antain 
Chi ck\\-ced , 
henhit , violets, 
and kn o tweecl 
Crabgra ss 
H erbicide Lbs active ingredicnt
1 Apply th is amount 
needed per acre commercial produ ct 
2,·1-D amin e 
or si !vex 
silvex 
AI\ IA or DI\TA 
(organic 
a r~e n ics) 
PMA 
2 tbs:l per ga llon of 
wa ter per 1000 sq ft 
Foll ow manufac turer's 
recommencl a t ion' 
Follow manufacturer 's 
recommend ations 
.1 oz o f 10% m a-
teri a l/ I 000 sq f' t 
Applica t ion time 
Spr ing, summer, 
or fall 
Sprin g or fall 
.\fter emergence 
2 to .J leaves o n 
era bgrass 
Comple te contro l o f' annuals, 
bi enni als, and m os t perennials. 
Consider possible d am age to 
nearby trees and shrubs and pos-
sible movem ent of stcril an t with 
r unofT water. 
Remarks 
Avoid drift on desirable broad-
lea fs . Do not usc ester formula-
tions of 2,4-D, d amaging fumes 
drift unpredictable distances. 
Spray when wind is calm. 
Use enough water to insure 
good coverage. 
R epea t treatment ever y 7 clays 
f'o r 2 or :> appli ca tions. A lso ap-
pea rs to be efTcc ti ve on foxtai l. 
Poisono us. 
R epea t trea tment every 7 d ays 
for 3 ap p lica tions. Also con trols 
certa in di seases. Poisono us. 
(Footnotes on b ack) 
kerosene 
LAWN AND TURF WEEDtS (Continued) 
l qtjiOO sq ft 2 to 4 leaves on 
crabgrass 
Use wa ter-white kerosene. D o 
not dilute. Apply when tempera-
ture is below 90° F. 
Crabgrass, foxtai l, arsenica ls 3 to 5 lb me- 12 lb calcium Preemergence (early Also controls certain insects. Use 
spring before weeds only on established grass . Poi-
germinate or late fall) sonous. Rake lawn prior to ap-
and other talic arsen- arsenate, 24 lb 
an nual grasses ic j I 000 sq ft lead arsenate 
Nimblewi ll 
\1\Thite clover 
Weed 
Buck brush 
Bur ragweed 
Canada thistle 
dacthal Follow manufacturer's 
zytron recommendations 
dalapon 1,4 lbj gal V3 lb Dowpon 
water 
2,4-5-T or Follow manufacturer's 
si lvex recommendations 
Preemergence in 
spring before weed 
seeds germinate 
When growing 
vigorously 
Spring or fall 
plication and water in. 
Use only on established grass. 
Rake lawn prior to applica tion 
and water in. 
Thoroughly wet all plants. Kills 
all grass . Reseed or resod in 4 
to 6 weeks. 
Repeat treatments may be neces-
sary. 
TROUBLESOME WEEDS AND WOODY PLANTS 
Herbicide 
2,4-D ester 
Lbs active ingredient1 
needed per acre 
1 to 2 
Apply this amount 
commercial product 
I to 2 qt3 
Application time 
Full foliage 
(May 10 to 25) 
R emarks 
Aerial equipment: apply chemi-
cal in 2 to 5 gal carrier 1 A. Ground 
equipment: use sufficient water 
to insure good coverage. 
2,3,6,-TBA, and PBA as-lis-t€(! for fi('}]cl bindweed ; erbon as listed for leafy spurge cont-rol. 
2,4-D 2 2 q(l During .June Same as for field bindweed ex-
cept amine formulations less ef-
fective. J f soi l moisture condi-
tions are poor, use oi l-water 
emu lsions as a carrier. 
2,3,6-TBA, and PBA as listed for field bindweed control. 
2,'1-D 2 2 qta Spring (early bud) 
and fall (rosette) 
amitrole 4 to 6 S to 12 lb 
Amino Triazole 
or Weedazol 
Before bloom or on 
regrowth following 
mowing 
Same as for field bindweed. 
Use enough water to insure good 
coverage. Plan to treat for sev-
eral consecutive years. 
Cottonwood , 2,4-D es ter 2to4 2 to 4 qt3 Full foliage 
(ea rly Jun e) 
Aeria l equipment: at least 5 gal 
carrier 1 A. Annual treatment for 
2 to 3 years may be necessary. 
Basal treatment: 2 qt of herbi-
cide / 10 ga l of diesel. Spray tree 
trunk to point of run-off. 
willows and 
Chinese elm 
Downy atrazine 2 2.5 lb Atrazine S0\1\1 Preemergence fall 
or spring prior to 
April l 
brome 
a trazi ne+ ami trole 
simazine+amitrole 
diuron + amitrole 
mon uron + amitrole 
I+ Y2 
1+!;2 
I+Y2 
I+Y2 
1.25 lb Atrazine SOW, 
Simazine SOW, Kar-
m ex, or Tel var plus 
1 lb of Amino Tria-
eedazal_ 
Postemergence in 
spring prior to 
April 10 
Field bindweed 2,4-D 1 qt'1 Bud stage in spring 
and on vigorous fall 
growth 
Hoary cress 
(perenn ial 
peppergrass) 
J oh nsongrass 
Leafy spurge 
Milkweed 
and dogbane 
Nodding or 
musk thist le 
2,3,6-TBA 
(Benzoic acid) 
PBA 
(Benzoic acid) 
20 
40 
1 V2 lb j sq rd Fall or spring 
Granular TBA or 
Y2 ptj sq rd Benzac 
12SI or Trysben 200 
10 gal/ A or V2 ptj sq Fall or spring 
rd of 4 lbj gal poly-
chlorobenzoic acid 
2,3-6-TBA, and PBA as listed for field bindweed control. 
2,4-D 2 to 4 Vz to I gaP Early bud in spring 
or rosette stage in 
the fall 
TCA so 100 lb 90% Early spring 
Sodium TCA 
dalapon .5 7 lb Dowpon S to 12 inches new 
growth or regrowth 
erbon Y2 lb j sq rd I pl Novon Ear ly spring 
Concentrate 
2,3-6-TBA, and PBA as listed for field bindweed control. 
2,4-D 2 2 qt'1 Early bud stage 
AMS i lbj sq rd 4 lb Ammate X Spring 
erbon I lb j sq rcl 1 gt Novon Fall or spring 
Concentrate 
amitrole 4 S lb Amino Tri azo le Bud to bloom stage 
or W eeclazol 
2,4-D I gta Spring before flower-
ing stalks lengthen 
and late fal l treat-
men t of rosettes 
Use only in waste areas such as 
fence rows and ditchbanks. Do 
not use on cropland . Use suffi-
cient water to insure good cov-
erage. 
Avoid tillage 10 to 12 weeks 
before and 1 to 2 weeks after 
application. Plan to treat for 
several consecutive years . 
Do not disturb areas during year 
of application. Fall application 
more effective. 
Same as for 2,3,6-TBA. 
Same as for field bindweed except 
amine formulations less effective. 
Use enough water to insure good 
coverage. Retreat escaped plants. 
Repeat treatment 3 times, 10 to 
20 days apart . 
Use enough water to insure good 
coverage. Retreat escaped plants. 
Same as for fi eld bindweed except 
amine formulations less effective. 
Use enough water to insure good 
coverage. A sticker-spreader in-
creases effectiveness. 
Use enough water to insure good 
coverage 
Use enough water to insure good 
coverage 
A biennial. Chemicals other 
than 2,4-D not necessary for ef-
fective control. 
Field bindweed 
H oa rycress 
(perennial 
peppergrass) 
.J oh nsongrass 
Lea fy spurge 
Milkweed 
a nd dogbane 
Nodding or 
musk thistl e 
Po ison ivy 
Pun cture vin e 
R agweed 
Russian 
kn apweed 
Russ ian olive 
Sagebrush (sand 
or green) 
T a n weed 
Wild rose 
Yucca 
2,4-D I gtX Bud stage in spring 
and on vigorous fall 
growth 
2,3,6-TBA 20 I Y2 lb j sq rei Fa ll or spring 
(Benzoi c acid ) Granul ar TBA or 
Y2 ptj sq rd Benzac 
128 1 or Trys ben 200 
PBA 40 I 0 ga l; A or Y2 ptj sq Fall or spring 
(Benzoic acid) rcl o f 4 lb j gal po ly-
chlorobenzoic acid 
2,g-6-TBA, a nd PB A as li sted for fi eld bindweed control. 
2,4-D 2 to 4 Y2 to I gaP Early bud in spring 
or rose tte stage in 
th e fall 
TCA 80 100Jb 90% Early spring 
Sodium TCA 
dalapon 5 7 lb Dowpon 8 to 12 inches new 
growth o r regrowth 
erbon Y2 lb j sg rd l pt Novon Ear ly spring 
Concentra te 
2,3-6-TBA, and PBA as listed for fi eld bindweed control. 
2,4-D 2 2 qtx Ea rl y bud stage 
AMS 
erbon 
amitrole 
2,4-D 
amitrol 
2,4,5-T or 
2,4-D+ 2,4,5-T 
AMS 
2,4-D ester 
2,4-D 
..J. lbj sq rd 
I lbj sq rcl 
4 
4lb Ammate X 
I gt Novon 
Concentra te 
8 lb Amin o Tri azo le 
or ' t\leedazol 
I qr:' 
2 tbs Amino Tria-
zole or W eedazo lj 
gal wa ter 
2 tbs'1 per gallon 
water 
o/4 lb Amma te 
Xj gal water 
l qt~ 
Spring 
Fall or spring 
Bud to b loom stage 
Spring before Oower-
i ng stalks lengthen 
and late lfall treat-
men t of rose ttes 
Full [o liage (.June) 
Pre-bud stage 
mos t effective 
Ear ly summer 
Avoid tillage 10 lO 12 weeks 
before and l to 2 weeks after 
application. Plan to treat for 
severa l consecutive years. 
Do not disturb areas during year 
of applica tion. Fall application 
more effec tive . 
Same as for 2,3,6-TBA. 
Same as for fi eld bindweed except 
amin e formula tions less effective. 
Use enough water to insure good 
coverage. Retrea t escaped plants. 
R epea t treatment 3 times, 10 to 
20 days a part. 
Use eno ugh water to insure good 
coverage . R etreat escaped plants. 
Same as fo r fi eld bindweed except 
amine [ormula tions less effective. 
Use enough water to insure good 
coverage . A sticker-spreader in-
creases effectiveness. 
Use enough water to insure good 
coverage 
Lise enough wa ter to insure good 
coverage 
A biennial. Chemicals other 
than 2,4 -D not necessary for ef-
fec tive control. 
Thorough ly wet all vegetation . 
Ma ture burs not affected by 
2,4-D. 
Follow-up treatments may be 
necessa r y. 
2,3,6-TB A, and PBA as sugges ted for fi eld bindweed; erbon as listed for leafy spurge conLrol. 
2,4-D 2 2 q L'1 Ear ly bud stage Same as for fi eld bindweed excep t 
amine form ulations less effective. 
silvex 
2,..J.-D + 2,4,5-T 
2,4-D ester 
2,4-D es ter 
2,4,5-T 
silvex 
2 
l+l 
I to 2 
2 
2 qt Kuron 
2 qt'l 
I qt3 
I to 2 qt~ 
2 g t Kuron 
Full foliage 
(earl y June) 
4 LO 8 inches new 
growth (Jun e) 
When growing 
vigorously 
La te spring or 
ear ly summ er 
.June 
Same as fo r cottonwood. 
Same as (or buckbrush . 
Contro ls !op growth principally . 
R epea t trea tment necessar y. 
Follow-up trea tments may be 
necessary. 
Usc diese l as a 
trea tments may 
carrier. Repea t 
be n ecessary. 
' Refe rs to acid equi va lent , ph eno l eq u iva lent , o r ac ti ve ingredient as 
a p plicable. 
CONVERSION TABLE 
' Refe rs to a herbicide treatment made from p la nting lim e to crop 
eme rgence. 
"Ca lcula ted on th e basis of 4 lb / ga l ma te ri a l. l0o r o ther fo rmul a tions 
sec con ve rsion ta ble a t ri ght. 
'G ra nula r m a teri a l a lso ava ila bl e. 
Lb . of Active 
J ng rcclient Pe r 
Ga l. o f Com ·· 
merc ia ! Produ ct 
2.00 
2.64 
3.00 
:!.34 
4.00 
6.00 
Pin ts of Comm ercial Product Need ed 
Per Acre to G ive th e Fo llowing Lbs . 
of Chemi ca l Per Acre 
y.; lb . liz lb . I lb . 
I 2 4 
o/4 IY2 3 
% 11/3 2% 
% 10, 2% 
Y2 l 2 
1/3 2/g J Y3 
(Footnotes on b ack) 


EC62-130  Chemicals that Control Weeds

DigitalCommons@University of Nebraska

University of Nebraska - LincolnDigitalCommons@University of Nebraska - LincolnHistorical Materials from University of Nebraska-Lincoln Extension Extension1962EC62-130 Chemicals that Control WeedsO. BurnsideJ. FurrerM. McCartyFollow this and additional works at: http://digitalcommons.unl.edu/extensionhistThis Article is brought to you for free and open access by the Extension at DigitalCommons@University of Nebraska - Lincoln. It has been accepted forinclusion in Historical Materials from University of Nebraska-Lincoln Extension by an authorized administrator of DigitalCommons@University ofNebraska - Lincoln.Burnside, O.; Furrer, J.; and McCarty, M., "EC62-130 Chemicals that Control Weeds" (1962). Historical Materials from University ofNebraska-Lincoln Extension. 3844.http://digitalcommons.unl.edu/extensionhist/3844~~~r '5 iHE LIBRARY E.C. 62-130 '85 /l.GRICULTURAL DlVISIO~ ,_AMERICAN CYANAMID COlv\PAN't ~ I PRielf€JMLcJaT5 that ~(od: 130 (. 2-- Control Weeds - a guide for 1962 -~' 0;;;-) r. i \ ·II 0. ~ Burnside, J . D. Furrer M. K. McCarty, ~- W. Bove;,, and G. A. Wicks gPR 9 1974 This ~a£ft r,ives suggestions for weed con-t~ol baseCI on re~earl:lr't'e~ults at the Nebraska AgriculturallE~e~idlent Station and elsewhere. We have listed what we believe to be the most effective weed killers, and their recommended rates and times of application. Because of the danger of drift, any user of an agricultural chemical must exercise judgment when spraying. Do not spray on a windy day. Wind may cause poor coverage and excessive drift. It is hazardous to use agricultural chemicals for purposes other than those specified by the approved label on the container. The Federal Food, Drug and Cosmetic Act, as amended, authorizes the seizure of any raw agricultural commodity moving in interstate commerce which carries a pesticide residue in excess of the established tolerance. Read the label care-fully. Observe the precautions shown on the label when handling any chemical. Extension Service University of Nebraska College of Agriculture and U. S. Department of Agriculture Cooperating E. F. Frolik, Dean; E. W. Janike, Director Crop Barley Corn Preem ergence Corn Postemergence Field beans O a ts Sorghum Preem ergence Sorghum Postemergence Soybea ns Whea t Calibrate your equipment before applying chemicals! FIELD CROPS Herbicide Lbs active ingr edientL Apply this amount 2, '1-D amine 2,4-D es ter a traz in e 2,4-D es ter CDAA and TCBC 2,4-D amine 2,4-D es ter atrazine EPTC 2,4-D amin e MC P C DAA pro paLine for hea vier so il s in SE Ne br need ed p er acre commercial product Y2 to % Y4 to ~-'2 2 to 3 I to 2 V2 LO I Y4 to ~12 3 3 EJ to 6 2 1 to I y2 pt:1 Y2 to I pt:l 2. 5 to 3.75 lb Atrazine 80\1\!4 I to 2 qt:l,.t 5 qt R andox T 4 I LO 2 ptH Y2 to I pt:l 3.7 5 lb Au-aL ine SOW 2 qt Eptam' I pt:J I qt:1 5 to 6 q t R andox4 2 Y2 lb Propazine 80W4 --------------------------------------2,4-D amine 2,4-D es ter Application time S- lea( to ea rl y boot Preemergence2 or very earl y pos t-em ergence when usin g atrazin e Before co rn is I 8" high-over 18" use drop nozzles Bel'ore weeds arc I V2 " ta ll Prcplant } <i-lea [ to fl ag leaf } Pceemecgen ce' During the period sorghum is 4 to 12 in ches high CDA A !'i w 6 5to6.qt R andox·1 } --;-;-------c3:----------=:----:_o_"7'o-_..,--___ Preemerp-en ce~ ami ben 6 qt Amiben·1 t-> 2,4-D amine 2,4-D es ter V2 w % y.4 to ~/2 I to I Y2 pta Y2 to l pr:~ !'i-lca f to ear ly boo t Remarks Do no t trea t winter barley in th e fall. Spray winter a rinual penn ycress and mustards hefore April 15. A I 3" band appli ca tion will re-duce the to ta l h erbicide used b y two-thirds. Do not use a trazine on land tha t will be planted to crops o ther than corn or sor-ghum the fo llowing year. Atra-zin e m ay carry over in the soil and injure following crops. On sandy so il use on ly a trazine and at the 2 lb r a te. 2,4-D m ay cause injury. Preem ergence weed con -tro l is most sa tis l'actory o n sur-face plantetl crops anti when a pplied to seed b eds free of clods and trash. La ter appli cations m ay cause urittl eness and sta lk brea kage. Use lower ra te wh en good grow-in g conditions exist. VVorks bes t when growing con-eli Lio ns are favor able. Heed atrazine usage rem arks above on res idu e car ry-over . Immedia tely in corpor a te into the so il by d o ubl e diskin g. Som e injury m ay be expected a t an y stage with 2,4-D . Band app li cat ions r edu ce h erbi-cide cos t. R and ox con trois an-nu al grassy weeds. Propazin e use cl ea red for seed production fi elds onl y. Preemergence weed co ntrol is mos t sa tisfactory on surface pl anted crops and when applied to seed bed s free of clods and trash . Do no t use propaz ine on la nd th at will be pl anted to crops other th an corn or sor-ghu m the fo ll owing yea r . Spraying before 4" stage may inhibit root d evelopment, and s pr ay in g du r in g 1 3 " s t age through ea rly boo t stage m ay in-hibit hea d d evelo pment. Band a pplications reduce herbi -c id e cos t. R a nd ox co n tro l s ann ua I grassy we eels. Preem er-gence weed contro l is mos t satis-fac tory o n surl'ace planted cro ps and when a ppli ed to seedbed s free of clod s and trash . Do no t trea t win ter wheat 111 th e fa ll. Spray win ter annual penn ycress and m ustards before April 15. PASTURES, RANGES, AND FORAGE CROPS Area or use Herbicide Lbs acti\'C ingredient' Apply this amount Applica tion time needed per acre commercia l product .\l fa lfa , and binlsfoot tre-fo il seedlings Cool -season EPTC d a la pon 4-( 2,4-DB) 2,4-D 2 LO 3 Y2 to % 2 qt Epta m~ 2Y2 to 3% lb Dowpon 2 q t 2 lbj gal Butoxone or Butyrac Prep! ant 2 to I weeks a fter alfalfa emerges when grass seed li ngs a re less th an 2" ta ll \Vhen weeds a re ; m all grass seedlings Warm-season 2,4-D y,! to \12 1 to I \12 pt~ } ----'"---- ---'-'------ -------------- ----- 2- to ·I-lea f stage \12 lO 1 pt:l grass seedlings '\ \fa rm-seaso n m onuron or grasses for diu ron seed atrazine Annual broacll ea f 2,·1-D weeds in pas-tures and ranges Perennia l broad- 2,4-D leaf weeds in pas lures and ranges 3 3 Area or use Herbicide Lb, active ingrcdicn t1 need ed per acre --------------------------Fence rows and 2,4-D roadsides (broild-leaf weeds) Irrigation ditch ba n ks monuron or diu ron 8 3.75 lb Spring or fa ll Kannex or T elvar before weed 3.7 5 lb Atra t ine SOW' emergence I qt:1 vVhcn weeds arc sma ll At bud stage of pre-dom inant weeds-,\pril for d andelion co ntrol NON-CROP AREAS Ap ply th is amoun t comm ercia l p roduct ---10 lb Karmex or T elvar Applica tion tim e W cccl hciglt L 2 to ·J inches Soon a ft er ditch es a re open R emarks Incorporate in to the soi l by d ou-ble di sking. Do no t graze forage within 60 d ays of treatment. Early injury m ay occur to le-gumes. For annu al grasses . Do no t sell first year's crop or feed trea ted forage to d a iry cows or animals be ing finish ed for sla ugh ter. For broadleaf weeds. May be mixed with cl a lapon. Do no t use trea ted forage for feed. f o r broadleaf weeds. For seed fi elds only . Atrazine does no t contro l fall panicum . Do no t use during year of estab-lishmen t. H erbicides less e fiec-tive in heavy pl ant res idues. Appl y in April for penn ycress and other mustards. Annual trea tment for 2 to 3 yea rs ma y be necessa ry. Rem ar ks R epeat trea tments may be neces-sa ry. Add 1 lb j acre of 2,4,5-T for wild rose and horse nettle. Use eno ugh water to insure good coverage. Use screens of 50 mesh or larger . Agita tion required. ' imazinc or a trazin e (j 7 y2 lb Simazine SOvV Before weeds appear li se enough water to insure goocl or Atrazin e S0'\1\f o r soon thereafter coverage. Agitation required. So il steril a nt for diuron or I 0 to 20 drives, storage areas, industrial sites, parking lcJLs, fence lines, etc. monuron simazine or atrazine e rbon monuron-TCA 1 () ·10 to SO Mixtures bora Le-mon u ron ch lora tc- bora te Fo llow m anufac-tu rer 's ch !orate-borate- recom-mencla-_m,_o_n_u,_r_o_n ___ ti on s. snnann e-amitrol .-, ilvex-dalapon 12 .. 5 to 25 lb T elvar or Karmex -------12.5 lb Simazin c SOW or 1\trazin e 80\V 10 to 20 gal Novon co ncentrate or Baron I lb Urox per sq rd Ureabor Polybor-chlorate, Chlorax, and Atlacide Chlorea .\mi zi ne Carlon Follow n1anu-f'anurer 's recom-m endations Earl y weed growth LAWN AND TURF WEEDS Weed Broad lea f weeds such as dande-lion , ragweed , fi e ld bindweed , and pl antain Chi ck\\-ced , henhit , violets, and kn o tweecl Crabgra ss H erbicide Lbs active ingredicnt1 Apply th is amount needed per acre commercial produ ct 2,·1-D amin e or si !vex silvex AI\ IA or DI\TA (organic a r~e n ics) PMA 2 tbs:l per ga llon of wa ter per 1000 sq ft Foll ow manufac turer's recommencl a t ion' Follow manufacturer 's recommend ations .1 oz o f 10% m a-teri a l/ I 000 sq f' t Applica t ion time Spr ing, summer, or fall Sprin g or fall .\fter emergence 2 to .J leaves o n era bgrass Comple te contro l o f' annuals, bi enni als, and m os t perennials. Consider possible d am age to nearby trees and shrubs and pos-sible movem ent of stcril an t with r unofT water. Remarks Avoid drift on desirable broad-lea fs . Do not usc ester formula-tions of 2,4-D, d amaging fumes drift unpredictable distances. Spray when wind is calm. Use enough water to insure good coverage. R epea t treatment ever y 7 clays f'o r 2 or :> appli ca tions. A lso ap-pea rs to be efTcc ti ve on foxtai l. Poisono us. R epea t trea tment every 7 d ays for 3 ap p lica tions. Also con trols certa in di seases. Poisono us. (Footnotes on b ack) kerosene LAWN AND TURF WEEDtS (Continued) l qtjiOO sq ft 2 to 4 leaves on crabgrass Use wa ter-white kerosene. D o not dilute. Apply when tempera-ture is below 90° F. Crabgrass, foxtai l, arsenica ls 3 to 5 lb me- 12 lb calcium Preemergence (early Also controls certain insects. Use spring before weeds only on established grass . Poi-germinate or late fall) sonous. Rake lawn prior to ap-and other talic arsen- arsenate, 24 lb an nual grasses ic j I 000 sq ft lead arsenate Nimblewi ll \1\Thite clover Weed Buck brush Bur ragweed Canada thistle dacthal Follow manufacturer's zytron recommendations dalapon 1,4 lbj gal V3 lb Dowpon water 2,4-5-T or Follow manufacturer's si lvex recommendations Preemergence in spring before weed seeds germinate When growing vigorously Spring or fall plication and water in. Use only on established grass. Rake lawn prior to applica tion and water in. Thoroughly wet all plants. Kills all grass . Reseed or resod in 4 to 6 weeks. Repeat treatments may be neces-sary. TROUBLESOME WEEDS AND WOODY PLANTS Herbicide 2,4-D ester Lbs active ingredient1 needed per acre 1 to 2 Apply this amount commercial product I to 2 qt3 Application time Full foliage (May 10 to 25) R emarks Aerial equipment: apply chemi-cal in 2 to 5 gal carrier 1 A. Ground equipment: use sufficient water to insure good coverage. 2,3,6,-TBA, and PBA as-lis-t€(! for fi('}]cl bindweed ; erbon as listed for leafy spurge cont-rol. 2,4-D 2 2 q(l During .June Same as for field bindweed ex-cept amine formulations less ef-fective. J f soi l moisture condi-tions are poor, use oi l-water emu lsions as a carrier. 2,3,6-TBA, and PBA as listed for field bindweed control. 2,'1-D 2 2 qta Spring (early bud) and fall (rosette) amitrole 4 to 6 S to 12 lb Amino Triazole or Weedazol Before bloom or on regrowth following mowing Same as for field bindweed. Use enough water to insure good coverage. Plan to treat for sev-eral consecutive years. Cottonwood , 2,4-D es ter 2to4 2 to 4 qt3 Full foliage (ea rly Jun e) Aeria l equipment: at least 5 gal carrier 1 A. Annual treatment for 2 to 3 years may be necessary. Basal treatment: 2 qt of herbi-cide / 10 ga l of diesel. Spray tree trunk to point of run-off. willows and Chinese elm Downy atrazine 2 2.5 lb Atrazine S0\1\1 Preemergence fall or spring prior to April l brome a trazi ne+ ami trole simazine+amitrole diuron + amitrole mon uron + amitrole I+ Y2 1+!;2 I+Y2 I+Y2 1.25 lb Atrazine SOW, Simazine SOW, Kar-m ex, or Tel var plus 1 lb of Amino Tria-eedazal_ Postemergence in spring prior to April 10 Field bindweed 2,4-D 1 qt'1 Bud stage in spring and on vigorous fall growth Hoary cress (perenn ial peppergrass) J oh nsongrass Leafy spurge Milkweed and dogbane Nodding or musk thist le 2,3,6-TBA (Benzoic acid) PBA (Benzoic acid) 20 40 1 V2 lb j sq rd Fall or spring Granular TBA or Y2 ptj sq rd Benzac 12SI or Trysben 200 10 gal/ A or V2 ptj sq Fall or spring rd of 4 lbj gal poly-chlorobenzoic acid 2,3-6-TBA, and PBA as listed for field bindweed control. 2,4-D 2 to 4 Vz to I gaP Early bud in spring or rosette stage in the fall TCA so 100 lb 90% Early spring Sodium TCA dalapon .5 7 lb Dowpon S to 12 inches new growth or regrowth erbon Y2 lb j sq rd I pl Novon Ear ly spring Concentrate 2,3-6-TBA, and PBA as listed for field bindweed control. 2,4-D 2 2 qt'1 Early bud stage AMS i lbj sq rd 4 lb Ammate X Spring erbon I lb j sq rcl 1 gt Novon Fall or spring Concentrate amitrole 4 S lb Amino Tri azo le Bud to bloom stage or W eeclazol 2,4-D I gta Spring before flower-ing stalks lengthen and late fal l treat-men t of rosettes Use only in waste areas such as fence rows and ditchbanks. Do not use on cropland . Use suffi-cient water to insure good cov-erage. Avoid tillage 10 to 12 weeks before and 1 to 2 weeks after application. Plan to treat for several consecutive years . Do not disturb areas during year of application. Fall application more effective. Same as for 2,3,6-TBA. Same as for field bindweed except amine formulations less effective. Use enough water to insure good coverage. Retreat escaped plants. Repeat treatment 3 times, 10 to 20 days apart . Use enough water to insure good coverage. Retreat escaped plants. Same as for fi eld bindweed except amine formulations less effective. Use enough water to insure good coverage. A sticker-spreader in-creases effectiveness. Use enough water to insure good coverage Use enough water to insure good coverage A biennial. Chemicals other than 2,4-D not necessary for ef-fective control. Field bindweed H oa rycress (perennial peppergrass) .J oh nsongrass Lea fy spurge Milkweed a nd dogbane Nodding or musk thistl e Po ison ivy Pun cture vin e R agweed Russian kn apweed Russ ian olive Sagebrush (sand or green) T a n weed Wild rose Yucca 2,4-D I gtX Bud stage in spring and on vigorous fall growth 2,3,6-TBA 20 I Y2 lb j sq rei Fa ll or spring (Benzoi c acid ) Granul ar TBA or Y2 ptj sq rd Benzac 128 1 or Trys ben 200 PBA 40 I 0 ga l; A or Y2 ptj sq Fall or spring (Benzoic acid) rcl o f 4 lb j gal po ly-chlorobenzoic acid 2,g-6-TBA, a nd PB A as li sted for fi eld bindweed control. 2,4-D 2 to 4 Y2 to I gaP Early bud in spring or rose tte stage in th e fall TCA 80 100Jb 90% Early spring Sodium TCA dalapon 5 7 lb Dowpon 8 to 12 inches new growth o r regrowth erbon Y2 lb j sg rd l pt Novon Ear ly spring Concentra te 2,3-6-TBA, and PBA as listed for fi eld bindweed control. 2,4-D 2 2 qtx Ea rl y bud stage AMS erbon amitrole 2,4-D amitrol 2,4,5-T or 2,4-D+ 2,4,5-T AMS 2,4-D ester 2,4-D ..J. lbj sq rd I lbj sq rcl 4 4lb Ammate X I gt Novon Concentra te 8 lb Amin o Tri azo le or ' t\leedazol I qr:' 2 tbs Amino Tria-zole or W eedazo lj gal wa ter 2 tbs'1 per gallon water o/4 lb Amma te Xj gal water l qt~ Spring Fall or spring Bud to b loom stage Spring before Oower-i ng stalks lengthen and late lfall treat-men t of rose ttes Full [o liage (.June) Pre-bud stage mos t effective Ear ly summer Avoid tillage 10 lO 12 weeks before and l to 2 weeks after application. Plan to treat for severa l consecutive years. Do not disturb areas during year of applica tion. Fall application more effec tive . Same as for 2,3,6-TBA. Same as for fi eld bindweed except amin e formula tions less effective. Use enough water to insure good coverage. Retrea t escaped plants. R epea t treatment 3 times, 10 to 20 days a part. Use eno ugh water to insure good coverage . R etreat escaped plants. Same as fo r fi eld bindweed except amine [ormula tions less effective. Use enough water to insure good coverage . A sticker-spreader in-creases effectiveness. Use enough water to insure good coverage Lise enough wa ter to insure good coverage A biennial. Chemicals other than 2,4 -D not necessary for ef-fec tive control. Thorough ly wet all vegetation . Ma ture burs not affected by 2,4-D. Follow-up treatments may be necessa r y. 2,3,6-TB A, and PBA as sugges ted for fi eld bindweed; erbon as listed for leafy spurge conLrol. 2,4-D 2 2 q L'1 Ear ly bud stage Same as for fi eld bindweed excep t amine form ulations less effective. silvex 2,..J.-D + 2,4,5-T 2,4-D ester 2,4-D es ter 2,4,5-T silvex 2 l+l I to 2 2 2 qt Kuron 2 qt'l I qt3 I to 2 qt~ 2 g t Kuron Full foliage (earl y June) 4 LO 8 inches new growth (Jun e) When growing vigorously La te spring or ear ly summ er .June Same as fo r cottonwood. Same as (or buckbrush . Contro ls !op growth principally . R epea t trea tment necessar y. Follow-up trea tments may be necessary. Usc diese l as a trea tments may carrier. Repea t be n ecessary. ' Refe rs to acid equi va lent , ph eno l eq u iva lent , o r ac ti ve ingredient as a p plicable. CONVERSION TABLE ' Refe rs to a herbicide treatment made from p la nting lim e to crop eme rgence. "Ca lcula ted on th e basis of 4 lb / ga l ma te ri a l. l0o r o ther fo rmul a tions sec con ve rsion ta ble a t ri ght. 'G ra nula r m a teri a l a lso ava ila bl e. Lb . of Active J ng rcclient Pe r Ga l. o f Com ·· merc ia ! Produ ct 2.00 2.64 3.00 :!.34 4.00 6.00 Pin ts of Comm ercial Product Need ed Per Acre to G ive th e Fo llowing Lbs . of Chemi ca l Per Acre y.; lb . liz lb . I lb . I 2 4 o/4 IY2 3 % 11/3 2% % 10, 2% Y2 l 2 1/3 2/g J Y3 (Footnotes on b ack) 

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EC62-130 Chemicals that Control Weeds

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