Selectivity and residual weed control of pre-emergent herbicides in soybean crop

Gazola, Tiago; Gomes, Diego Munhoz; Belapart, Diego; Carbonari, Caio Antônio; Velini, Edivaldo Domingues

doi:10.1590/0034-737x202168030008

Cited by 6 publications

(3 citation statements)

References 19 publications

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“…As previously mentioned, the effect of diclosulam and other pre-emergent herbicides on seed quality is little investigated. Nevertheless, some studies have reported negative effects on soybean with diclosulam or sulfentrazone application, such as injury, stunted plant growth and even yield loss in certain situations (FORNAZZA et al, 2018;DALAZEN et al, 2020;GAZOLA et al, 2021).…”

Section: Resultsmentioning

confidence: 99%

Can pre- and/or post-emergent herbicide application affect soybean seed quality?

Ceretta,

Albrecht,

Albrecht

et al. 2023

Rev. Caatinga

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Soybean cultivation requires herbicide application in the off-season, before emergence for weed desiccation, and after emergence. It is believed that the use of preand post-emergent herbicides combined with preharvest application may negatively affect the quality of soybean seeds. As such, the present study aimed to assess the effect of preand post-emergent herbicides on soybean seed quality. Five field experiments were conducted during the 2018/2019 and 2019/2020 growing seasons to investigate the effects of synthetic auxins and pre-emergents, acetyl-CoA carboxylase (ACCase) inhibitors, broadleaf herbicides, and s-metolachlor or clomazone on the quality of soybean seeds. Dicamba application combined with the pre-emergent herbicides imazethapyr/flumioxazin before soybean planting reduced seed vigor and germination. ACCase inhibitors in association with broadleaf herbicides before planting had no effect on seed quality. Applying s-metolachlor (up to 2,880 g of active ingredient [ai] ha-1) or clomazone (up to 1,800 g ai ha-1) was safe for seed germination, even when used after soybean emergence.

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Section: Resultsmentioning

confidence: 99%

Can pre- and/or post-emergent herbicide application affect soybean seed quality?

Ceretta,

Albrecht,

Albrecht

et al. 2023

Rev. Caatinga

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“…ha-1) at postemergence resulted in lower soybean grain yield, with losses from 10% to 8%. In addition, Gazola et al (2021) found that diclosulam and sulfentrazone should be applied at least 14 days before sowing to avoid damages to soybean plants. The variations in the results, under field conditions, found in the present study were due to correlations between the dynamics of pre-emergence herbicide application, local edaphoclimatic conditions, and genotypes used (Lima et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Response of soybean cultivars with different maturation times to pre-emergence herbicides

et al. 2023

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Herbicide selectivity is the basis for chemical control of weeds; however, it depends on the interactions between herbicide, crop, and edaphoclimatic conditions. The objective of this work was to evaluate the selectivity of herbicides applied at the pre-emergence stage of soybean cultivars with different maturation times grown in different locations. The experiment was conducted under field conditions, in two crop seasons (2019/2020 and 2020/2021), in Lages and Curitibanos, state of Santa Catarina, Brazil. A randomized block experimental design was used, with treatments organized in 4×3 (2019/2020) and 4×4 (2020/2021) factorial arrangements, with four replications. The treatments consisted of interactions between four soybean cultivars: BMX Raio IPRO® (Raio), BMX Zeus IPRO® (Zeus), MONSOY 5947 IPRO® (Monsoy), and BMX Fibra IPRO® (Fibra) and three or four herbicide treatments: control with no herbicides, sulfentrazone + diuron, and diclosulam in 2019/2020; and control with no herbicide, sulfentrazone + diuron, diclosulam, and pyroxasulfone + flumioxazin in 2020/2021. The plots were evaluated for phytotoxicity of herbicides, canopy closure, plant height, stand of plants, number of pods per plant, one-thousand grain weight, and grain yield. The phytotoxicity of herbicides on the soybean plants was mild, under 11%, regardless of the cultivar and growth location. The soybean plants fully recovered from the injuries at 14 days after herbicide application. In Curitibanos, the cultivar Zeus presented higher grain yield in both crop seasons. The herbicide factor showed that sulfentrazone + diuron and diclosulam decreased the grain yield of the cultivars Raio and Zeus in 2019/2020. In the following crop season, only the cultivar Raio presented decreases in grain yield due to the application of diclosulam and pyroxasulfone + flumioxazin. In Lages, the soybean cultivar factor affected the grain yield; the cultivars Monsoy and Fibra were the most productive.

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“…Possibly, the absence of more pronounced injuries in soybean plants in the present experiment is related to diferences in the physical-chemical properties of the soil compared to soils of the aforementioned studies, since it was already mentioned that these characteristics of the soil environment govern the processes of sorption and desorption of herbicides, making them more available in the soil solution. Another possibility refers to the diferential tolerance of the soybean cultivars used in this experiment compared to those tested in other studies, for the herbicides applied in preemergence, since there are soybean materials that are less sensitive to the phytotoxic action of herbicide molecules [29].…”

Section: Discussionmentioning

confidence: 99%

Can Soil Compaction Alter Morphophysiological Responses and Soybean Yield under Application of Selective Herbicides?

Pereira,

Ferreira,

Braz

et al. 2023

Applied and Environmental Soil Science

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Compacted soils may be negatively affecting the selectivity of herbicides applied in preemergence in the soybean crop. Therefore, the present work aimed to investigate possible negative effects on the morphophysiological characters of soybean plants, as well as on the agronomic and yield performances of this crop. For this purpose, two trials were carried out, one in a greenhouse and the other under field conditions. In a greenhouse, the study was carried out in a completely randomized design in a 2 × 8 factorial, with five replications, while in the field, the design used was randomized blocks, with the treatments arranged in split-plot (2 × 8), with six repetitions. The first factor/plot corresponded to the physical condition of the soil: compacted or not compacted, while the second factor/subplot was constituted by the application of preemergence herbicides: clomazone, diclosulam, flumioxazin, S-metolachlor, [imazethapyr + flumioxazin], [pyroxasulfone + flumioxazin], and [sulfentrazone + diuron], plus a control without herbicide. In the greenhouse study, there was a significant interaction between soil compaction and herbicides applied in preemergence for the relative index of chlorophyll b and root dry mass. Furthermore, the isolated herbicide factor did not promote significant changes in any of the morphophysiological variables evaluated. Compaction alone had a negative impact on the variables relative index of chlorophyll a and carbon assimilation rate, with reductions in the values of these variables when the soybean was submitted to growth in compacted soil. For the field experiment, there were no significant interactions between the factors for any of the analyzed variables, nor the effect of herbicides alone. The isolated soil compaction factor negatively impacted the plant stand and the thousand-grain mass of soybean, showing reductions in the values of this parameter when the soybean was grown in compacted soil.

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Selectivity and residual weed control of pre-emergent herbicides in soybean crop

Cited by 6 publications

References 19 publications

Can pre- and/or post-emergent herbicide application affect soybean seed quality?

Can pre- and/or post-emergent herbicide application affect soybean seed quality?

Response of soybean cultivars with different maturation times to pre-emergence herbicides

Can Soil Compaction Alter Morphophysiological Responses and Soybean Yield under Application of Selective Herbicides?

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