By Dwight Lingenfelter
Below is the annual overview of newer herbicide products. As in the recent past, there are no new herbicide modes of action, but there are a few products with new active ingredients and premixes.
Beyond Xtra 1SL (BASF) will be the new name for the imazamox-containing products. It will essentially combine the two labels of Beyond and Raptor and can be used in alfalfa, soybean, snap bean, Clearfield sunflowers, and a few other crops. Only Beyond Xtra is being produced now, but Beyond and Raptor stocks can be marketed until they are depleted.
Enversa 3CS (Corteva) is a new proprietary encapsulated formulation of acetochlor (group 15) for use in soybean and corn. The new formulation is designed to move easily from the foliage to the soil to provide residual control of many small-seeded annual broadleaves and grasses; the capsule thickness varies to allow release of herbicide over an extended period. It also has excellent crop safety, easy handling, and tank-mix compatibility. The typical use rate is 3 pt/A and can be applied in soybean from pre up to post R2 stage and post in corn up to 30" tall. It can be tank-mixed to broaden weed control spectrum. It is currently registered and being marketed.
Intrava DX (amicarbazone + metribuzin; group 5, UPL) and Intrava MX (amicarbazone + mesotione; groups 5, 27) are new experimental premixes for use as a burndown and/or PRE residual in field corn. They have activity on many annual broadleaves and some grass weeds, including Palmer and waterhemp. They are currently not registered.
Kyro 3.07CS (acetochlor [Warrant] + topramezone [Impact] + clopyralid [Stinger]; groups 15, 27, 4; Corteva) is an encapsulated formulation and provides foliar and some residual control of annual grasses & broadleaves when applied POST up to 24” tall field corn. The typical application rate is 45 fl oz/A, but can range from 35 - 60 fl oz. It will likely be tank-mixed with glyphosate or atrazine to broaden the control spectrum. This product is registered and currently being marketed.
Liberty Ultra 1.76SL (glufosinate [Liberty]; group 10; BASF) is considered the next generation of Liberty herbicide. It contains L-glufosinate, which is a more active isomer and thus allows for lower use rates. For example, 24 fl oz of Liberty Ultra will be equal to 32 fl oz of current Liberty 280 formulation. This improved formulation causes greater spray droplet retention on the weed foliage and provides consistent performance and crop safety. It can be applied to glufosinate resistant crops. The application timing in soybeans is from emergence up to early bloom (R1 stage) and from emergence through V6 in corn. It is best to include AMS, spray at 15-20 gallons/A, and use nozzles that produce medium to coarse spray droplets. It recently received EPA approval and will be marketed in the 2025 season. Liberty 280 2.34SL may still be found in the marketplace until it is sold out.
NovaGraz (florpyrauxifen (aka Rinskor active) + 2,4-D; group 4; Corteva) was recently labeled for use in grass pastures and hayfields as well as CRP acres. It is safe on many types of forage grasses AND preserves white clover. However, it will severely injure or kill other legumes, such as red and crimson clover, alfalfa, and birdsfoot trefoil. It will control or suppress many broadleaf weeds such as ironweed, cocklebur, wild carrot, buttercup, biennial thistles, ragweeds, plantain, poison hemlock, dandelion, marestail, and others. Unfortunately, it is weak on horsenettle, milkweed, hemp dogbane, Canada thistle, and smooth bedstraw. The typical rate is 24 fl oz/A plus methylated seed oil (MSO). There are none to minimal (3 days) grazing restrictions after application for any class of livestock, including lactating animals. Must wait 14 days after application to harvest hay and wait 30 days to move manure to sensitive areas unless it is being applied to areas used for pasture, corn, or wheat. These restrictions are unlike Milestone or GrazonNext products. NovaGraz received federal registration and should be available in our region pending state approvals for the 2025 season. (This product was previously referred to as ProClova.)
Rapidicil 0.46EC (epyrifenacil; group 14, Valent) is a PPO inhibitor herbicide like Sharpen and has activity on many annual broadleaves and certain grasses. However, it is weak on marestail. Currently, it is being tested as a burndown product but might possibly be used to control weeds post in PPO-inhibitor tolerant crops currently being developed. It is still pending regulatory approval and might be launched by mid-decade.
Rely 2.34SL (glufosinate; group 10) will be discontinued by BASF and no longer maintain its label for specialty crops (certain tree, vine, berry, cucurbit crops, etc.). Existing inventory of Rely can be used until it is exhausted. It is unknown if another company might add these crops to their glufosinate product label.
Resicore REV 3.26CS (Corteva) is a reformulation of Resicore (acetochlor, mesotrione, and clopyralid), and the old formulation will be phased out. Resicore REV can be used in field corn (PRE or POST). The major change is the switch to encapsulated acetochlor for better crop safety and improved handling. This allows for a wider application window of up to 24" tall corn (the original Resicore label was up to 11” corn). The typical rate is 2.5 qt/A on medium soils. This product can be tank-mixed to broaden weed control spectrum and can be applied in a liquid fertilizer carrier. This product is currently being marketed.
Storen 3.2ZC (S-metolachlor [Dual II Mag.] + pyroxasulfone [Zidua] + mesotrione [Callisto] + bicyclopyrone; groups 15, 27; Syngenta) is a newer premix of four active ingredients but it does not contain atrazine. It can be tank mixed with atrazine or other products to broaden the weed control spectrum. It can be applied from PRE through POST (V8 growth stage) in field corn and can be used in sweet corn but only as a PRE application. The typical use rate range is from 2.1 – 2.4 quarts/A and will provide residual control of many annual grasses and broadleaves as well as foliar control of certain annual broadleaves.
Surtain 1.62ZC (saflufenacil [Sharpen] + pyroxasulfone [Zidua]; groups 14, 15; BASF) is a premix in a novel solid encapsulation formulation technology referred to as ZC. Because of its formulation, Surtain does Not have burndown activity on weeds, so burndown herbicide will need to be added to the program. It can be applied PRE through early POST (V3) in field corn (not sweet corn) and is compatible with liquid fertilizer carriers. Surtain will provide residual control of annual grasses and large- and small-seeded broadleaves. A typical use rate is 14 fl oz/A and can be tank-mixed; also, if applying after corn emergence, include only NIS and AMS since COC/MSO and UAN can cause crop injury. Surtain is currently registered and being marketed.
Voraxor 3.13SC (saflufenacil [Sharpen] + a new PPO; group 14, BASF) is primarily a PRE/burndown herbicide but has some residual activity on broadleaf weeds. This combination provides improved control of purple deadnettle, henbit, common chickweed, and mouseear chickweed compared to Sharpen. It will be labeled for use in soybean, corn, and wheat but does not yet have a federal registration.
Zalo 2.57SL (glufosinate + quizalofop; groups 10,1, AMVAC) is a specially formulated premix that is designed to provide post control of many annual broadleaf weeds and improve weedy grass activity in glufosinate-resistant soybean. Apply from 32 – 43 fl oz/A and include AMS plus crop oil (COC or MSO) to improve activity. To avoid antagonism, apply 1 day before or 7 days after when using 2, 4-D containing herbicides and avoid tank mixing with dicamba. Zalo is now registered.
Source : psu.edu