The straw presence preceding soybean crop increases the persistence of residual herbicides

Patel, Felipe; Trezzi, Michelangelo Müzell; Nunes, Anderson Luís; Bittencourt, Henrique von Hertwig; Diesel, Francielli; Pagnoncelli, Fortunato De Bortoli

doi:10.51694/advweedsci/2023;41:00004

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…Application on dry straw resulted in herbicide movement aligned with precipitation intensity, meaning the transfer of these products through the straw increased or decreased depending on the volume of rain. Dry straw has the capacity to retain the herbicide on the surface and in macropores, impeding their movement and increasing its residuality [40]. Conversely, applying herbicides on wet straw led to notable movement, even with low rainfall intensity, signifying elevated environmental humidity.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of a System to Assess Herbicide Movement in Straw under Dry and Wet Conditions

Thais dos Santos,

Ferraz Santos de Brito,

Alves de Matos

et al. 2024

AgriEngineering

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Straw from no-till cropping systems, in addition to increasing the soil organic matter content, may also impede the movement of applied herbicides into the soil and, thus, alter the behavior and fate of these compounds in the environment. Rain or irrigation before or after an herbicide treatment can either help or hinder its movement through the straw, influencing weed control. Our objective was to develop a system for herbicide application and rain simulation, enabling the evaluation of the movement of various herbicides either in dry or wet straw under different rainfall volumes (25, 50, 75, and 100 mm). The amount of the applied herbicides that moved through the straw were collected and measured using a liquid chromatograph with a tandem mass spectrometry system (LC-MS/MS). Measurements obtained with the developed system showed a high herbicide treatment uniformity across all replications. The movement of the active ingredients through the straw showed variability that was a function of the applied herbicide, ranging from 17% to 99%. In wet straw, the collected herbicide remained constant from 50 to 100 mm of simulated rainfall. For the wet straw, the decreasing percentages of the herbicide movement through straw to the soil were sulfentrazone (99%), atrazine and diuron (91% each), hexazinone (84%), fomesafen (80.4%), indaziflam (79%), glyphosate (63%), haloxyfop-p-methyl (45%), and S-metolachlor (27%). On the dry straw, the decreasing percentages of the herbicide movement were fomesafen (88%), sulfentrazone (74%), atrazine (69.4%), hexazinone (69%), diuron (68.4%), glyphosate (48%), indaziflam (34.4%), S-metolachlor (22%), and haloxyfop-p-methyl (18%). Overall, herbicide movement was higher in wet straw (with a previous 25 mm simulated rainfall layer) than in dry straw. Some herbicides, like haloxyfop-p-methyl and indaziflam, exhibited over 50% higher movement in wet straw than dry straw after 100 mm of simulated rain. The developed system can be adapted for various uses, serving as a valuable tool to evaluate the behavior of hazardous substances in different agricultural and environmental scenarios.

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Section: Discussionmentioning

confidence: 99%

Evaluation of a System to Assess Herbicide Movement in Straw under Dry and Wet Conditions

Thais dos Santos,

Ferraz Santos de Brito,

Alves de Matos

et al. 2024

AgriEngineering

View full text Add to dashboard Cite

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“…During sowing or in the second desiccation before planting, herbicides with a residual activity that act in pre-emergence of weeds can be used for sourgrass control (Timossi, 2009;Andrade Jr et al, 2018;Patel et al, 2023;Tropaldi et al, 2017). Several preemergent herbicides are commonly used for this purpose such as: atrazine; clomazone; diclosulam; flumioxazin, alone or mixed with imazethapyr/diclosulam; S-metolachlor, alone or mixed with diclosulam; and trifluralin (Barroso et al, 2021;Silva, Mendes, 2020;Barroso et al, 2017;Gemelli et al, 2013;Adv Weed Sci.…”

Section: Chemical Controlmentioning

confidence: 99%

“…The mulch act as a physical barrier to weed emergence and the growth of seedlings (Petter et al, 2015;Raimondi et al, 2019). Sourgrass seeds have limited longevity in the soil, and the presence of mulch significantly reduces their germination rates (Patel et al, 2023;Mechi et al, 2018). This makes mulch a valuable component of integrated weed management practices.…”

Section: Non-chemical Controlmentioning

confidence: 99%