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Isoflex™ Active Overview

trials_photoIsoflex™ active is the trade name of Bixlozone, a new herbicide ingredient from the isoxazolidine family discovered and developed by the FMC research and development organization. It offers growers operational flexibility and lasting control of key grass weeds, including those with developed resistance to other mode of action herbicides, as well as a range of broadleaf weeds. Early season application timing enables growers to maximize productivity across multiple crop segments.

 

Learn more about how Isoflex™ active controls key grass weeds and how it will offer growers a new resistance management tool.

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Mode of Action

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MOA_Group13Isoflex™active, a new isoxazolidinone herbicide, inhibits the carotenoid biosynthesis in susceptible plants – carotenoids are pigments that are critical to protecting photosynthetic processes and ensure normal plant growth and development. Due to a lack of chlorophyll production, susceptible plants may show chlorosis and/or bleaching symptoms and ultimately die off.  Studies of tolerant crops show that these symptoms are transient with no effect on the vigor and yield.

Weed Control

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weed_control_isoflexIsoflex™ active represents a new and unique selective residual weed control solution in a wide range of crops including, cereals, corn, legumes, rapeseed, and sugarcane, and will offer a new mode of action herbicide solution for cereals. Isoflex™ active provides both systemic and contact activity, with residual control, and will be able to be applied pre-emergence, early post-emergence or incorporated by sowing, across a wide range of agronomic environments. Isoflex™ active has excellent control of key annual grass weeds, including ryegrass (Lolium spp.), barnyardgrass (Echinochloa spp.), crabgrass (Digitaria spp.), canarygrass (Phalaris spp.) and goosegrass (Eleusine indica), bluegrass (Poa spp.). It also provides exceptional control of key broadleaf weeds, such as common chickweed (Stellaria media), speedwells (Veronica spp.), shepherds purse (Capsella bursa-pastoris) and wild chamomile (Matricaria chamomilla).

Resistance Management

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resistance_Management_IsoflexWeed resistance is a global concern, but the specific challenges vary at the local level, and so should the weed management tactics.  Reference the HRAC, AUS, and WSSA classifications of herbicides to plan the appropriate herbicide mixtures or rotations within an integrated weed management system, including crop rotation. Isoflex™ active is a new active ingredient that is classified as an HRAC Group 13. As only the second active substance belonging to the isoxazolidinone family, Isoflex™ active will offer a new rotational product and a valuable tool for resistance management, especially in cereals. Isoflex™ active will also be a complementary mixing partner for broadleaf herbicides as it can extend the utility of existing products by expanding the spectrum of weeds controlled. While herbicides are one tool for weed control, FMC also supports integrated weed management programs that utilize a wide variety of weed control practices to ensure that herbicides remain as sustainable tools.

To effectively steward products powered by Isoflex™ active and minimize the risk of resistance developing, the following steps must be followed: 

  1. Always read and follow labeled application rates and directions for use.
  2. Tank mixtures that include more than one effective mode of action for the target species must be used.
  3.  A full-season program using selective post-emergent herbicides must be used.
  4. Crop rotations should be implemented.

Application Flexibility

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App_Flex_IsoflexWeeds reduce yields by competing for space, light, water, and nutrients, weakening crop stand, and by reducing harvest efficiency. Effective weed management involves developing a sound herbicide strategy to control weeds at crucial points throughout the season. Pre-emergence herbicides are important for controlling weeds after the seeds germinate, until 2-3 leaves. Pre-emergent herbicides are key to reducing weed pressure and removing competition early in the growing season. Isoflex™ active provides both systemic and contact activity, with residual control. The herbicide can be applied pre-emergence or early post-emergence, across a wide range of agronomic environments.

Registration Status

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FMC Corporation is working towards registering Isoflex™ active for use in cereals in countries around the globe. Isoflex™ active is registered in Australia, Argentina, Brazil, China, Great Britain, India, Pakistan, Uruguay and Chile. Registrations have been submitted in the European Union.

Always read and follow all label directions, precautions, restrictions for use. Isoflex™ active is not registered for sale or use in all countries. No offer for sale, sale, or use of this product is permitted prior to the issuance of the required registrations by the relevant regulatory entity.

Isoflex is a trademark of FMC Corporation and/or an affiliate. All rights reserved.