Differential Tolerance of Pumpkin Species to Bentazon, Metribuzin, Trifluralin, and Oxyfluorfen

Nosratti, Iraj; Mahdavi-Rad, S.; Heidari, Hassan; Saeidi, Mohsen

doi:10.1590/s0100-83582017350100066

Cited by 8 publications

(8 citation statements)

References 19 publications

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“…Plants that received herbicide at GS +15, GS +25, and GS +35, had some mature leaves that were increasingly tolerant to residual concentration of herbicide, resulting in lower herbicide injury. Dithiopyr, a similar herbicide as oryzalin, produced a greater reduction in growth when applied at early growth stages [45], and oxyfluorfen injury was also found to be higher on plants exposed to oxyfluorfen at early growth stages compared to late growth stages [27,28]. In our study, after the end of herbicide exposure, leaf visual rating on plants exposed to oxyfluorfen started to recover immediately.…”

Section: Morphological Response Depends On the Growth Stage Of Plantsupporting

confidence: 56%

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Sensitivity of Hydrangea paniculata Plants to Residual Herbicides in Recycled Irrigation Varies with Plant Growth Stage

Poudyal

Owen

Fernandez

et al. 2020

Water

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Recycling irrigation return flow is a viable option to achieve sustainability in horticultural production systems, but residual herbicides present in recycled water may be phytotoxic. The sensitivity of plants to residual herbicides may vary depending on the growth stage of the plant. If sensitive growth stages are avoided, the risk associated with using recycled water can be reduced. Here, we quantified the effect of residual oryzalin and oxyfluorfen exposure at various growth stages of Hydrangea paniculata. Exposure to both herbicides reduced plant growth, leaf visual rating, soil plant analysis development (SPAD) chlorophyll index, net photosynthesis, and light-adapted fluorescence of H. paniculata. Herbicide injury was greater for plants exposed to herbicides at early growth stages, however, the recovery rate of those plants was also rapid. For oxyfluorfen, plants produced healthy new growth immediately after the end of exposure, but for oryzalin, even newly formed leaves developed herbicide injury after the end of exposure, therefore leaf damage continued to progress before recovering. However, damage caused by residual herbicide exposure at all growth stages recovered over time. Physiological measurements such as the SPAD index, net photosynthesis, and light-adapted fluorescence responded quickly to herbicides exposure hence provided an early indicator of herbicide damage and recovery.

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Section: Morphological Response Depends On the Growth Stage Of Plantsupporting

confidence: 56%

“…Complete recovery from phytotoxicity in rice was seen just a month after oxyfluorfen exposure [26]. Plant injury associated with oxyfluorfen exposure is often more acute when plants are exposed to oxyfluorfen at early growth stages compared to late growth stages [27,28].…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of Hydrangea paniculata Plants to Residual Herbicides in Recycled Irrigation Varies with Plant Growth Stage

Poudyal

Owen

Fernandez

et al. 2020

Water

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“…Bentazon symptoms were observed 3 DAT and included yellowing (chlorosis) of leaf tissue followed by death (necrosis) of the tissue, beginning around the leaf margins and progressing towards the center. Similar symptoms were observed in other susceptible crops (Han & Wang, 2002; Nosratti et al., 2017; Willians & Nelson, 2014). Bentazon is a photosystem II inhibitor that competes with plastoquinone for the binding site on the D1 protein, blocking electron transport from photosystem II.…”

Section: Discussionsupporting

confidence: 81%

Impact of tank mixing plant hormones with bentazon and mesotrione on sweetpotato injury and weed control

Caputo

Wadl

McCarty

et al. 2021

Agrosystems Geosci & Env

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Due to excessive crop damage, currently, there are no selective postemergent (POST) herbicides registered for sweetpotato [Ipomoea batatas (L.) Lam] to control broadleaves and nutsedge species. Expansion of bentazon and mesotrione herbicide labels to include sweetpotato would be beneficial for growers. Two experiments were conducted. The first evaluated the dose response of sweetpotato cultivars Beauregard and Covington to bentazon (514, 1,028, and 1,542, g a.i. ha -1 ) and mesotrione (105, 210, and 315 g a.i. ha -1 ) when melatonin, 24-epibrassinolide, or ascorbic acid (AsA) were included in the tank mix. The second experiment evaluated the efficiency of bentazon and mesotrione for control of yellow nutsedge (Cyperus esculentus L.) and Palmer amaranth (Amaranthus palmeri S. Wats.), when different doses of melatonin, 24-epibrassinolide, or AsA were added to each herbicide. In the first experiment, when treated with herbicide alone, Beauregard exhibited injury levels lower than Covington for both herbicides. No injury was observed when plants were treated with plant hormones or AsA alone. At the lowest dose of bentazon and mesotrione, the addition of AsA or plant hormones in the tank mix significantly reduced percentage injury and increased plant tolerance, requiring higher doses of herbicide to cause 10, 20, and 30% injury. In the second experiment, the addition of plant hormones and AsA in the tank mix had no antagonistic effect on herbicide effectiveness, exhibiting similar levels of injuries as herbicides application alone. These results suggest that the use of plant hormones and AsA could improve sweetpotato tolerance to POST applications of bentazon and mesotrione without reducing herbicide effectiveness. INTRODUCTIONSweetpotato [Ipomoea batatas (L.) Lam] production in the United States has increased by 37.6% from 2012 to 2017, reaching an estimated value of US$654 million in 2018 (USDA,

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“…A diminuição e posterior paralisação do crescimento das plantas são consequências da ação desses herbicidas inibidores Protoporfirinogenio Oxidase, pois a inibição dessa enzima contribui para a redução da produção de clorofila (Silva et al, 2007). Nosratti et al (2017) crescimento, altura das plantas e área foliar na cultura da mamona (Almeida et al, 2018).…”

Section: Resultados E Discussão Efeitos Dos Herbicidas Sobre O Melão unclassified

Crescimento inicial do melão após aplicação de herbicidas em pós-emergência

et al. 2018

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O controle de plantas daninhas em cultivos do meloeiro é dificultado pela falta de informações de herbicidas seletivos para a cultura. O objetivo deste trabalho foi avaliar o efeito da aplicação de herbicidas em pós-emergência no melão cultivar amarelo e cultivar pele de sapo. Dois experimentos (um para cada cultivar) foram realizados em casa de vegetação no delineamento inteiramente casualizado, com quatro repetições. Os tratamentos foram compostos pela aplicação dos herbicidas em pós-emergência: fomesafen (250 g i.a. ha-1); flumioxazin (2000 g i.a. ha-1); fenoxaprop (110 g i.a. ha-1); ioxynil (1005 g i.a. ha-1); carfentrazone (20 g i.a. ha-1); oxyfluorfen (960 g i.a. ha-1); oxadiazon (1200 g i.a. ha-1); mais uma testemunha sem aplicação. Avaliações de fitotoxidade foram realizadas aos 7, 14, 21 e 28 dias após a aplicação (DAA). As avaliações de número de folhas, comprimento da haste, área foliar, diâmetro do caule e matéria seca total foram realizadas aos 28 DAA. Os herbicidas oxadiazon e oxyfluorfen influenciaram negativamente no crescimento inicial do melão amarelo. Os herbicidas oxadiazon e ioxynil influenciaram negativamente no crescimento inicial do melão pele de sapo. Os herbicidas flumioxazin e fomesafen não alteraram o crescimento inicial do melão amarelo e do melão pele de sapo apresentando grande potencial para testes de seletividade.

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Differential Tolerance of Pumpkin Species to Bentazon, Metribuzin, Trifluralin, and Oxyfluorfen

Cited by 8 publications

References 19 publications

Sensitivity of Hydrangea paniculata Plants to Residual Herbicides in Recycled Irrigation Varies with Plant Growth Stage

Sensitivity of Hydrangea paniculata Plants to Residual Herbicides in Recycled Irrigation Varies with Plant Growth Stage

Impact of tank mixing plant hormones with bentazon and mesotrione on sweetpotato injury and weed control

Crescimento inicial do melão após aplicação de herbicidas em pós-emergência

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