Quick Guide to Glyphosate Products - Frequently Asked Questions

 
 
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 Are there actual differences between all the glyphosates on the market or are they basically the same?
A few years ago all glyphosate products had acid equivalent (ae) concentrations of about 360 g/L, but now products have ae concentrations of 360, 450, 480, 500 and 540 g ae/L (Table 1). Because of these ae concentrations, volumetric application rates are no longer standard for all products (Table 2), and care must be taken to ensure that products are applied at the proper rate for intended results. Except for these ae concentration differences, many of the glyphosate products are similar, but keep in mind that each of these herbicides has a unique label that defines how the product can be used and what results can be expected if the product is applied according to label.

Table 1. Overview of Some of the Similarities and Differences Between Glyphosate Products

Product Name
Company
Active Ingredient,
Acid Equivalent
Use on canola, corn, soybean or sugar beets with the Roundup Ready(R) Gene
Use as a Pre-Harvest Perennial Weed Control*
Cheminova Glyphosate Soluable Concentrate Herbicide (PCP#26828)
Cheminova
356 g/L
No
Wheat, Barley, Peas, Flax, Canola, Lentils, Dry Beans, Soybean
Clearout 41
(PCP# 28322)
Albaugh Inc.
360 g/L
Canola, Soybean, Corn
Wheat, Barley, Peas, Flax, Canola, Lentils, Dry Beans, Soybean
Credit (PCP# 25866)
Nufarm Agriculture
356 g/L
No
Wheat, Barley, Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages
Credit 45 (PCP# 29124)
Nufarm Agriculture
450 g/L
Canola, Soybean, Corn
Wheat, Barley, Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages
Factor 540
(PCP# 27988)
IPCO
540 g/L
Canola, Soybean, Corn,Sugar Beets
Wheat, Barley, Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages
Glyfos (PCP# 27287)
Cheminova
360 g/L
No
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages
Glyphogan Plus (PCP#29219
MANA Canada
356 g/L
Canola, Soybean, Corn
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages
KnockOut Extra
(PCP# 29266)
Libertas Now Inc.
360 g/L
Canola, Soybean, Corn
Wheat, Barley, Peas, Flax, Canola, Lentils, Dry Beans, Soybean,
Maverick III (PCP#29033)
Dow AgroSciences
480 g/L
Canola, Soybean, Corn
Wheat, Barley, Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages
MPower Glyphosate (PCP# 29290)
New Agco Inc.
356 g/L
Canola, Soybean, Corn
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages
NuGlo (PCP# 29470)
NuFarm Agriculture
450 g/L
Canola, Soybean, Corn
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages
Polaris (PCP# 29479)
NuFarm Agriculture
360 g/L
Canola, Soybean, Corn
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages
R/T 540 (PCP# 28487)
Monsanto
540 g/L
Canola, Soybean, Corn, Sugarbeets
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages, Chickpea, Fababean, Lupin
Roundup Transorb HC
(PCP# 28198)
Viterra
540 g/L
Canola, Soybean, Corn, Sugarbeets
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages, Chickpea, Fababean, Lupin
Roundup Ultra2 (PCP#28486)
Monsanto
540 g/L
Canola, Soybean, Corn, Sugarbeets
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages, Chickpea, Fababean, Lupin
Roundup WeatherMax
PCP# 27487
Monsanto
540 g/L
Canola, Soybean, Corn, Sugarbeets
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages, Chickpea, Fababean, Lupin
Sharpshooter
(PCP# 28631)
UAP
356 g/L
No
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean,
Sharpshooter Plus
(PCP# 28623)
UAP
360 g/L
Canola, Soybean, Corn
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean,
StartUp (PCP# 29498)
Viterra
540 g/L
Canola, Soybean, Corn, Sugarbeets
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages, Chickpea, Fababean, Lupin
Touchdown Total
(PCP# 28072)
Syngenta
500 g/L
Canola, Soybean, Corn
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean,
Traxion (PCP# 29201)
Syngenta
500 g/L
Canola, Soybean, Corn
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean
Vantage Plus Max II
(PCP# 28840)
Dow AgroSciences
480 g/L
Canola, Soybean, Corn
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages
Wise Up (PCP# 29126)
Adjuvants Plus Inc.
356 g/L
Canola, Soybean
Wheat, Barley, Oats,Peas, Flax, Canola, Lentils, Dry Beans, Soybean, Forages
*Seed trated with a pre-harvest application of glyphosate should not be used for seed purposes.


Table 2. Application Rates of Glyphosate Products with Various Acid Equivalent Concentrations
Acid Equivalent Concentration
Acid Equivalent
360g/L
450 g/L
480g/L
500g/L
540gL
g ae/ac
L/ac
108
0.30
0.24
0.225
0.216
0.20
119
0.33
0.264
0.25
0.238
0.22
144
0.40
0.32
0.30
0.288
0.27
180
0.50
0.40
0.38
0.360
0.33
241
0.67
0.535
0.50
0.482
0.45
270
0.75
0.60
0.56
0.540
0.50
360
1.00
0.80
0.75
0.720
0.67
450
1.25
1.0
0.94
0.900
0.83
540
1.50
1.2
1.125
1.080
1.00
720
2.00
1.6
1.50
1.440
1.33

For preseed burnoffs, what can be mixed with glyphosate for improved weed control?
Glyphosate tank mixes for preseed situations are one area where there is some variation between product labels. Pardner at 0.4 to 0.5 L/ac is the only product that has registered mixes with all glyphosates. Buctril M, Banvell II, 2,4-D (amine or ester), MCPA (amine or ester), Express SG, and Express Pro have registered tank mixes with some, but not all, of the various glyphosate products.

It is worth noting that there are no glyphosate tank mixes for burnoffs prior to seeding canola. Only MCPA amine and Expres SG are registered for mixing with glyphosates prior to peas, lentils, and chickpeas. Also note that the 2,4-D rates in Table 2 are based on acid equivalent concentrations of 560 g/L (of 2,4-D) and these rates need to be adjusted if other formulations are used. Due to the sheer numbers of glyphosate products, it is difficult to present all the products and their registered mixes. Check the individual labels for tank mix partners.

In Roundup Ready Canola, is weed control the same for all registered products?
Annual broadleaf and grassy weed control is similar for all the glyphosates registered for use in glyphosate tolerant canola (Table 3). Crop staging(up to 6 leaf stage) is the same for all registered products, as is the maximum total annual post emergent application rate of 360 g ae/ac.

For perennial weed control all products are registered for a single application of 270 g ae/ac to give full season control of Canada thistle and perennial sowthisle, (Table 3).

Table 3. Weed Control in Glyphosate Tolerant Canola

Rate (L/ac)
Weeds Controlled
Comments
119 - 180 g ae/acBarnyard grass, chickweed, corn spurry, green foxtail, hempnettle, kochia, lady’s thumb, lamb’s quarters, redroot pigweed, Russian thistle, stinkweed, volunteer barley, volunteer canola (non Roundup Ready), volunteer wheat, wild mustard, wild oats, wild tomato.

Cow cockle, night flowering catchfly, and shepherd’s purse controlled with the low rate only when weeds are in 1 - 3 leaf stage. Smartweed at 4 - 6 leaf stage also controlled with the low rate. For all other stages of these weeds use the high rate.
Glyphosates have no
residual activity. Repeat
applications may be
required if a second flush
of weeds germinates prior to canopy closure.

Ensure the crop has not
advanced beyond the 6
leaf stage.
180 g ae/acAbove weeds plus cleavers, flixweed, narrow-leaved hawk’s beard, stork’s bill, and wild buckwheat.

Weeds suppressed with a single application of this rate: Canada thistle,
dandelion, perennial sow thistle and quackgrass (season long control).
Repeat applications of
180 g ae/ac
Season long control: Canada thistle, foxtail barley, perennial sow thistle, and round-leaved mallow.
Single application of 270 g ae/acSeason long control: Canada thistle and perennial sow thistle
Tank Mix
0.113 L/ac Lontrel 360 plus
180 g ae/ac glyphosate
..
All weeds controlled with 0.5 L/ac (180 g ae/ac) plus season long control of Canada thistle, dandelion < 15 cm diameter , perennial sowthistle , and control of wild buckwheat.
Canola in 2 – 6 leaf stage.

40 L/ac spray volume.

Note: Herbicide labels are updated periodically so proper product use may change over time. This document is based on the labels as of the following dates.

Product NameRegistration Label Date
Cheminova Glyphosate Soluable Concentrate Herbicide (PCP# 26828)2001-09-24
Clearout 41 (PCP# 28322)2006-05-11
Credit (PCP# 25866)2000-01-26
Credit 45 (PCP# 29124)2008-11-26
Factor 540 (PCP# 27988)2005-07-20
Glyfos (PCP# 27287)1996-05-14
Maverick III (PCP# 29033)2008-04-15
MPower Glyphosate (PCP#29290)2009-09-25
NuGlo (PCP# 29470)2009-10-20
Polaris (PCP#29479)2009-10-27
Roundup Transorb HC (PCP# 28198)2005-11-02
Roundup Ultra 2
(PCP# 28486)
2006-10-11
Roundup Weather Max
(PCP# 27487)
2003-10-17
R/T 540 (PCP# 28487)2006-10-11
Sharpshooter (PCP# 28631)2007-04-15
Sharpshooter Plus
(PCP# 28623)
2007-04-05
StartUp (PCP# 29498)2009-11-30
Touchdown Total
(PCP# 28072)
2005-08-24
Traxion (PCP# 29201)2008-12-30
Vantage Plus Max II
(PCP# 28840)
2008-02-06
Wise Up (PCP# 29126)2009-01-13
Prepared by Doon Pauly, Alberta Ag- Info Centre, Alberta Agriculture and Rural Development
Edited by Harry Brook, Alberta Ag-Info Centre, Alberta Agriculture and Rural Development
 
 
 
 
For more information about the content of this document, contact the Ag-Info Centre.
This information published to the web on April 26, 2006.
Last Reviewed/Revised on July 19, 2011.