Biochar impact on herbicides behavior in the soils: an approach in Brazil

Mendes, Kássio Ferreira; Almeida, Cassio de Souza; Inoue, Miriam Hiroko; Mertens, Tatiane Beatriz; Tornisielo, Valdemar Luiz

doi:10.7824/rbh.v1i1.551

Cited by 3 publications

(3 citation statements)

References 20 publications

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“…On the other hand, any addition of organic compounds to the soil can directly affect the behavior of residual herbicides and consequently the weed control efficacy [35,36]. For instance, the application of biochar to the soil is carried out for carbon sequestration, waste management, increased CEC, soil pH elevation, water retention, and nutrient source, which typically benefits agricultural production [37].…”

Section: Papers On Herbicide Retention In the Soil Published Each 5 Y...mentioning

confidence: 99%

Understanding the Environmental Behavior of Herbicides: A Systematic Review of Practical Insights

Ferreira Mendes,

Nogueira de Sousa,

da Costa Lima

et al. 2023

Pesticides - Agronomic Application and Environmental Impact

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Herbicides play a crucial role in weed control in various agricultural and non-agricultural settings. However, their behavior in the environment is complex and influenced by multiple factors. Understanding their fate and retention, transport, and transformation is essential for effective herbicide management and minimizing their impact on ecosystems. This chapter begins by emphasizing the importance of studying herbicide behavior in real-world conditions, considering physical, chemical, and biological amendments in soil. It highlights how these amendments can directly affect weed control efficacy when residual herbicides are applied in pre-emergence. Detailed knowledge of herbicide behavior in the environment enables the adjustment of application rates based on soil type and climatic conditions, which is a key aspect of precision agriculture. The study of herbicide interactions in the environment has experienced significant growth across various subfields, particularly in the last three decades. It can be considered a multidisciplinary subject that encompasses areas such as agricultural, environmental, and biological sciences, as well as technology, physics, chemistry, and biomedicine. Overall, there are over 35,000 papers on herbicide behavior in the environment, and the trend indicates that the number of publications will continue to grow in the coming years.

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Section: Papers On Herbicide Retention In the Soil Published Each 5 Y...mentioning

confidence: 99%

Understanding the Environmental Behavior of Herbicides: A Systematic Review of Practical Insights

Ferreira Mendes,

Nogueira de Sousa,

da Costa Lima

et al. 2023

Pesticides - Agronomic Application and Environmental Impact

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show abstract

“…Herbicides applied pre-emergence promote early weed control and help manage resistant biotypes [20][21][22]. However, the efficiency of these molecules depends on their bioavailability in the solution, the physicochemical characteristics of the soil, the method of preparing the area, and climatic factors during and after application [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Efficacy of S-metolachlor + glyphosate for Weed Control in Different Levels of Eucalyptus Straw

Duque,

Oliveira,

Souza

et al. 2023

Forests

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The occurrence of weeds in eucalyptus plantations can cause losses in productivity. Chemical control is widely used, but the efficiency of herbicides depends on management and environmental factors. This study aims to evaluate the efficiency of S-metolachlor + glyphosate in the control of grasses in different densities of eucalyptus straw and with simulated rainfall after application of the product. The experiment was conducted in a randomized block design, factorial, with four replications. The first factor represented 0; 1.06 + 0.79 e 2.12 + 1.59 kg i.a. ha−1 of the commercial dose of S-metolachlor + glyphosate, the second 0; 5 and 10 tons ha−1 of straw and, the third 25 and 50 mm of water depth applied in soil with a mix of grasses previously sowed. The evaluations carried out were fresh mass, dry mass, and visual analysis of the control percentage. The fresh and dry mass and the grasses’ dry mass/water ratio decreased with increasing herbicide dosage and straw density. The treatments without straw and with the herbicide application had the highest percentages of control, the highest in the dosage of 2.12 + 1.59 kg i.a. ha−1 of S-metolachlor + glyphosate. Applying different water depths (25 mm or 50 mm) did not influence the control. In conclusion, it was observed that the isolated straw promoted the control of grasses. However, in treatments that included straw and herbicide, there was a decrease in the efficiency of the product, which suggests an antagonism between the vegetation cover and S-metolachlor + glyphosate.

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“…This can result in reduced herbicide availability for absorption by weeds present in the seed bank, and hence, reduced control efficiency. Furthermore, soil texture also affects herbicide movement in the soil profile, with greater leaching potential in coarse-textured soils, which can lead to off-target movement and potential environmental risks [9]. Therefore, the choice and application of pre-emergent herbicides should take into account the soil texture and other relevant soil properties to optimize weed control and minimize environmental risks.…”

Section: Introductionmentioning

confidence: 99%

Weed Control and Selectivity of Four Herbicides Applied in Pre-Emergence on Two Sunflower Cultivars

Santos

Inoue

Guimarães

et al. 2023

Crops

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The sunflower (Helianthus annuus L.) is an oleaginous plant that shows high suitability for cultivation in Brazil. However, the performance of the crop is influenced by factors such as weed interference, mainly because of the few selective herbicide options. Thus, the objective of this study was to evaluate weed control and selectivity of four pre-emergent herbicides applied to two sunflower cultivars in sandy and clayey soils. Two field experiments were conducted in a randomized block design with a 2 × 6 factorial scheme, two cultivars (CF 101 and M 734) and six treatments with S-metolachlor (1920 g a.i. ha−1), sulfentrazone (150 g a.i. ha−1), flumioxazin (40 g a.i. ha−1), and trifluralin (1780 g a.i. ha−1) and two controls, one with weeding and the other without weeding and without herbicide application, in soils with contrasting textures (sandy and clayey). No injury symptoms were observed in both cultivars, regardless of soil texture. The cultivar M 734 exhibited the highest values of the agronomic parameters evaluated. The treatment with flumioxazin provided control of more than 90% of the weeds in clayey soil and more than 64% in sandy soil. The yield of both cultivars was lower in the sandy soil. Thus, all herbicide treatments were selective for both cultivars tested, since they did not interfere with sunflower grain yield.

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Biochar impact on herbicides behavior in the soils: an approach in Brazil

Cited by 3 publications

References 20 publications

Understanding the Environmental Behavior of Herbicides: A Systematic Review of Practical Insights

Understanding the Environmental Behavior of Herbicides: A Systematic Review of Practical Insights

Efficacy of S-metolachlor + glyphosate for Weed Control in Different Levels of Eucalyptus Straw

Weed Control and Selectivity of Four Herbicides Applied in Pre-Emergence on Two Sunflower Cultivars

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