Herbicide mixtures: interactions and modeling

Abstract

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided that the original author and source are credited.This review compiles information on physiological and physicochemical interactions between herbicides, addressing the most known cases of synergism, antagonism, and additivity, as well as their physiological bases, and the methods for evaluating herbicide interactions. Reference models for herbicide interactions have been reported and they usually interfere interpretation of the mixture effect. Antagonistic interactions can increase the evolution of weed resistance by favoring the survival of individuals exposed to the herbicide. Physicochemical incompatibility in the spray tank usually causes herbicide antagonism, whereas both synergism and antagonism can result from increased or decreased uptake/translocation and from physiological changes in the plant.

Preemergence herbicide premixes reduce the risk of soil residual weed control failure in corn

“…The relatively high level of giant ragweed control observed in 2021 for the PRE herbicide premixes (S-metolachlor + bicyclopyrone + mesotrione, atrazine + S-metolachlor + bicyclopyrone + mesotrione, and clopyralid + acetochlor + mesotrione) compared with acetochlor or S-metolachlor, which have a single active ingredient, may be a result of the different SOA combinations in these mixtures. These different SOAs can complement each other under a range of environmental conditions, thus providing more consistent weed control (Barbieri et al 2022; Bollman et al 2006). Striegel et al (2021a) reported high (95%) giant ragweed control at this experimental location (Rock County Farm, Janesville, Wisconsin) using herbicide premixes that contain mesotrione (clopyralid + acetochlor + mesotrione and S-metolachlor + bicyclopyrone + mesotrione).…”

The nexus between reactive oxygen species and the mechanism of action of herbicides

“…A number of patents have recently been filed to protect this new use of herbicides ( 181 ). The role of ROS in other known synergistic and antagonistic interactions between herbicides should be further investigated ( 182 ).…”

Weed Management in Transplanted Rice (Oryza sativa L.)

“…High performance of penoxsulam + triclopyr-butotyl as readymade (0.0343 + 0.257 kg ai ha -1 ) may be due to high killing ability of both active ingredients against grasses, sedges and BLW with no toxicity on rice plants consequently save water, nutrients, sun light and soil space for more photosynthesis and increase dry matter accumulation, panicles and increase yield components which reflex on improving rice grain yield. Barbieri et al, (2022) reported that herbicide mixtures became a common application in agriculture because of mixing two different active ingredients or more achieve a high performance in weed control. These results are in confirmed with those cited by Hassan and Shebl., 2005, Shebl et al, 2009, Mahajan and Chauhan., 2015and Abd El-Naby et al, 2017.…”