Herbicidas residuales, mecanismos de acción en malezas

Residual herbicides being in contact with the soil, remain active for months, due to their movement, these herbicides should be used to handle species that come from seeds, both broadleaf (broadleaf) and grasses. Residual herbicides are designed to control weeds in their early stages of improvement, i.e., while the epidermis of the future plant is at its minimum expression. Most residual herbicides have an effect on photosynthesis or cell division and growth, but a few herbicides appear to affect a couple of factors. Thus, bromoxynyl nitrile inhibits photosynthesis and uncouples oxidative phosphorylation. Herbicides of the same chemical organization usually have the same movement, but this is not always continuously the case. The information obtained was carried out through the technique of analysis, synthesis and summary, with the purpose of informing the reader about the importance of residual herbicides and their mechanisms of action on weeds. From the above, it was determined that there are three elements that influence the efficacy of residual herbicides applied to the soil: soil moisture, soil texture and organic matter content, the characteristics of the active component and the dose of herbicide used. The factors that define the persistence of a herbicide in soil can be grouped into three main factors: (1) factors that define the adsorption of herbicides to soil colloidal micelles, (2) climatic factors, and (3) characteristics or elements based on crop management. All residual herbicide adsorption processes are mediated by soil characteristics, physico-electrical properties of herbicide molecules, and factors affecting water movement within plants. The most commonly used residual herbicide molecules are Simazine 50%, Oxyfluorfen, Diuron 50%, Pendimethalin, Trifluralin, Oryzalin, Flumioexazin Dichlobenil, Indaziflam and Terbuthylazine 50%.

• Hlavní autor: Armijos Chalan, Edwin Fabricio (author)
• Médium: bachelorThesis
• Vydáno: 2022
• Témata: Herbicidas residuales; Mecanismos de acción; Aplicación; Malezas
• On-line přístup: http://dspace.utb.edu.ec/handle/49000/13368