Effect of 2,4-D sub-dose on the initial development of common bean crop

Massucato, Luana Rainieri; Oliveira, Guilherme Mendes Pio de; Libardoni, Gabriela; Dominoni, Ana Paula Ferreira; Costa, Silvano César da; Gonçalves, Leandro Simões Azeredo

doi:10.5935/1806-6690.20210041

Cited by 2 publications

(3 citation statements)

References 12 publications

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“…Seeds are rich in meristematic and active growth tissues, and since 2,4-D acts on cell division and the metabolism of nucleic acids and proteins, it also damages cell membranes and causes cell death, which explains why seeds are more responsive to auxin (MORO et al, 2021). Massucato et al (2021) also observed damage to the radicle of bean seeds, but they did not correlate with microbial proliferation as occurred in our experiment. In general, although little studied during the germination phase, microbial populations in the soil, substrate, or even endophytes, are critically important during the seedling emergence stage.…”

Section: P á G I N a | 835contrasting

confidence: 53%

“…Studies with bean seeds, however, observed that 2,4-D does not have a stimulating effect, even at sub-doses, on seedling emergence and development since seeds treated with 33.50 g/L of 2,4-D had their mass indexes reduced by more than 70%. Moreover, after the application of 67 g/L of 2,4-D in pre-emergence, an injury rate of over 80% was noted (MASSUCATO et al, 2021).…”

Section: P á G I N a | 835mentioning

confidence: 99%

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Effects of high-dose 2,4-D on germination and initial development of Canavalia ensiformis (L.) DC.

Silva

Costa

Direito

et al. 2022

CLIUM

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This study aimed to evaluate the development of Canavalia ensiformis seedlings under high concentrations of 2,4-dichlorophenoxyacetic acid (2,4-D) in different substrates. In the first analysis, seeds from different origins were disinfected and introduced into a modified Leonard vessel (PET vessel) containing washed sand or washed sand plus vermiculite substrates and under high concentrations of 2,4-D (0 - control, 250 and 500 mg/L). For a second analysis, seed germination, callogenesis and contamination in different concentrations of 2,4-D (0 - control, 20, 40, 250 and 500 mg/L) were evaluated with sterile sand as substrate. Results showed that higher concentrations of 2,4-D could induce larger areas of callus formation. At a concentration of 40 mg/L of 2,4-D, germination in riparian forest substrates washed sand resulted in root growth and callus formation without contamination. Although C. ensiformis seeds showed tolerance to regions with high concentrations of 2,4-D, they do not demonstrate phytoremediation capacity for this herbicide since it caused damage to the plant’s initial development.

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Section: P á G I N a | 835contrasting

confidence: 53%

Section: P á G I N a | 835mentioning

confidence: 99%

Effects of high-dose 2,4-D on germination and initial development of Canavalia ensiformis (L.) DC.

Silva

Costa

Direito

et al. 2022

CLIUM

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“…Although the phytotoxicity dropped as 2,4-D doses decreased, slight chlorosis was still observed in plants even with the minimum dose (5.23 g ai ha −1 ), causing 20 % phytotoxicity. Massucato et al (2021) found that bean seedlings subjected to subdoses of 2,4-D showed a reduction in germination and length, and increasing concentrations reduced emergence and increased plant injuries. The evolution of phytotoxicity caused by Dicamba in the bean crop was observed in the first evaluation, with little or no difference between evaluation times for most doses.…”

Section: Resultsmentioning

confidence: 97%

Crop Sensitivity to Dicamba and 2,4-D Applied at Commercial and Subdose Levels

Fogolari-Boteon,

Oliva-da Silva,

Ferrari-Schedenffeldt

et al. 2024

agro

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The development of dicamba and 2,4-D resistant crops may result in the widespread use of these herbicides in agricultural areas, potentially affecting nearby susceptible crops. This study aimed to evaluate the sensitivity of bean, peanut, and cotton to different doses of Dicamba and 2,4-D. To do so, separate experiments were conducted for each crop and herbicide in a greenhouse, using a completely randomized design with four replications. Both herbicides were applied at different doses to plants with the second pair of true leaves. Phytotoxicity and dry biomass were evaluated. For cotton, 2,4-D showed high phytotoxicity at doses of up to 83.75 g ai ha−1, with a reduction in suppressive effect observed at 20.93 g ai ha−1. Dicamba exhibited a pronounced reduction in crop biomass up to a dose of 70 g ai ha−1, with 94 % phytotoxicity. For beans, the evolution of symptoms using 2,4-D occurred more slowly, but the highest doses resulted in phytotoxicity of up to 95 % and a 30 % reduction in biomass at 167.5 g ai ha−1, indicating a significant impact on the crop. Dicamba also had a high negative impact, with a 100 % reduction in biomass at 70 g ai ha−1. The peanut crop was more tolerant to herbicides, with 2,4-D doses of 670, 335, and 167.5 g ai ha−1 resulting in phytotoxicities of 69.5, 37.49, and 14.37 %, respectively. Dicamba significantly reduced dry biomass at doses of up to 70 g ai ha−1. The results show that, despite the differences in sensitivity of cotton, bean, and peanut to 2,4-D and Dicamba, even low doses of these herbicides applied early in development had a significant negative impact on these crops.

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Effect of 2,4-D sub-dose on the initial development of common bean crop

Cited by 2 publications

References 12 publications

Effects of high-dose 2,4-D on germination and initial development of Canavalia ensiformis (L.) DC.

Effects of high-dose 2,4-D on germination and initial development of Canavalia ensiformis (L.) DC.

Crop Sensitivity to Dicamba and 2,4-D Applied at Commercial and Subdose Levels

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