Eficácia e fitotoxicidade de herbicidas aplicados para manejo de plantas daninhas infestantes do trigo

Galon, Leandro; Castoldi, Camile Thais; Forte, César Tiago; Kujawiski, Renato; David, Fátima; Perin, Gismael Francisco; Radünz, André Luiz; Agazzi, Luciane Renata; Rossetti, Joselaine; Radünz, Lauri Lourenço

doi:10.7824/rbh.v14i2.405

Cited by 7 publications

(10 citation statements)

References 21 publications

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“…Barley ears length showed reduced values with the application of 2,4-D amine at the first node stage and after the first node of the crop, compared to the application of 2,4-D choline after the first node, compared to the other treatments for thousand-grain weight. In a previous study, an average increment of 3% was observed in the thousand-grain weight of barley cultivars MN610 and Crioula treated with the herbicide 2,4-D amine, compared to the witness without application of the product (Galon et al, 2014). Viecelli et al (2019) found no change in the thousand-grain weight of wheat when treated with 2,4-D amine at the third tiller emission stage.…”

Section: Resultsmentioning

confidence: 84%

“…Agrar., Recife, v.17, n.2, e1850, 2022 5/9 and only 2,4-D choline was harmful to this variable studied in the tillering period and after the first node of barley plants, compared to plants without the application of herbicides. Although they found reduced percentage of phytotoxicity, Galon et al (2014) also found reduced ears number when applying 2,4-D amine to barley cultivars MN610 and Crioula.…”

Section: Resultsmentioning

confidence: 92%

“…Associated with the phytotoxicity symptoms was the occurrence of some twisted, abraded, or curled leaves, regardless of the development stage of the barley plants during the application of the herbicides. The application of 2,4-D amine (1,050 g ha -1 active ingredient) before tillering and at tillering of barley cultivars MN 610 and Crioula demonstrated phytotoxicity contents, at 28 DAT, ranging from 3 to 15% and also the occurrence of twisted leaves (Galon et al, 2014). These symptoms occur due to the effect of synthetic auxin on the inducing signals, where the hormones, upon sensing the auxin present in the herbicide, interrupt the natural development signals, coming to cause leaf twisting, in addition to other deformations in the stem or roots (Ionescu & Penescu, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…Among the direct and indirect effects already described by the use of 2,4-D, phytotoxicity, altered nutrient uptake, downregulation of plant defense mechanisms, and reduced grain yield components stand out (Galon et al, 2014;Piasecki et al, 2017;Skelton et al, 2017). The herbicide 2,4-D can be marketed in amine, choline, and ester salt formulations, the latter of which is no longer marketed in Brazil (Contiero et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Selectivity of 2,4-D salts to barley plants applied at distinct phenological crop stages

Galon

Martins

Brandler

et al. 2022

Agraria

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The herbicide 2,4-D is available in distinct formulations in terms of selectivity to non-target species, and in terms of drift and volatilization potentials. Thus, the objective of this work was to evaluate the selectivity and effect of 2,4-D formulations (amine salt and choline) applied at different developmental stages of barley. The experiment was installed in the field in randomized blocks, in a 2 × 4 + 1 factorial scheme, with four replications. Factor A comprised the formulations of 2,4-D (amine salt and choline), and factor B the crop phenological stage (before tillering start, at full tillering, first node and booting), plus a weeded control treatment. The 2,4-D amine showed higher phytotoxicity when applied before tillering and at the first node. On the other hand, 2,4-D choline, when used prior to tillering start, showed the highest phytotoxicities. The yield components showed positive results when using the amine salt before and at tillering, while in the first node stage, and in booting, the choline salt stood out. The use of 2,4-D amine in tillering and choline in the first node provided the highest grain yield of barley.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Selectivity of 2,4-D salts to barley plants applied at distinct phenological crop stages

Galon

Martins

Brandler

et al. 2022

Agraria

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“…O tratamento com o herbicida profoxidim proporcionou maior nível fitotóxico quando comparado ao controle, seguido pelo tratamento com o herbicida bispiribaque-sódico, Galon et al, (2015) avaliando a eficácia e fitotoxicidade de diferentes herbicidas aplicados na cultura do trigo para controle de plantas daninhas, observaram que os herbicidas imazethapyr + imazapic, clomazone e imazapic + imazapyr apresentaram maior fitotoxicidade na cultura.…”

Section: Resultsunclassified

Desempenho inicial de arroz irrigado decorrentes da aplicação de fertilizantes na seletividade de herbicidas

et al. 2016

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Resumo: O arroz, alimento apreciado na mesa do consumidor em todo mundo, possui amplo espectro produtivo no Brasil, devido às condições ideais de clima e solo encontrados no país, as quais possibilitam produção tanto em terras altas como em terras baixas, garantindo o abastecimento do mercado interno e externo. O presente estudo objetivou avaliar os efeitos decorrentes da aplicação de fertilizantes no desempenho inicial da cultura do arroz irrigado e na seletividade a herbicidas. O experimento foi conduzido em casa de vegetação, nas dependências da Faculdade de agronomia Eliseu Maciel -IES, Cidade (UF). O delineamento utilizado foi inteiramente casualizado, disposto em esquema fatorial (3 x 3) + 1, com 4 repetições, onde o fator A corresponde aos fertilizantes (Biozyme TF ® , GreenFactor ® e Pilatus ® ) e o fator B aos herbicidas (cialofope-butil, bispiribaque-sódico e profoxidim) registrados para a cultura do arroz irrigado, além do tratamento controle, sem aplicação de fertilizante e sem aplicação de herbicidas. Avaliou-se o comprimento de parte aérea aos 7 e 21 dias após (DAH), massa da matéria seca aos 21 DAH, fitotoxicidade aos 7, 14 e 21 DAH e teor de clorofila através de leituras com clorofilômetro. A partir dos resultados obtidos, observou-se que a aplicação dos fertilizantes não influenciou no desenvolvimento inicial da cultura do arroz e na seletividade dos herbicidas aplicados. Em relação à avaliação de fitotoxicidade, o profoxidim causou os maiores índices. Palavras-chave: clorofilômetro; fitotoxicidade; Oryza sativa L,Abstract: Rice, food enjoyed at the dinner table in the world, has extensive production spectrum in Brazil, due to the ideal conditions of climate and soil found in the country, which enable production of both upland and lowland, ensuring market supply internal and external. This study aimed to evaluate the effects of the application of fertilizers in the initial performance of irrigated rice and selectivity to herbicides. The experiment was conducted in a greenhouse on the premises of Agronomy Faculty Eliseu Maciel -IES, City (UF). The design was completely randomized, arranged in a factorial scheme (3 x 3) + 1, with 4 replications, where factor A corresponds to fertilizers (Biozyme TF®, GreenFactor® and Pilatus®) and factor B herbicide (cyhalofop butyl, bispyribac-sodium and profoxidim) registered for irrigated rice in addition to the control treatment without fertilizer application and without application of herbicides. We evaluated the shoot length at 7 and 21 days (DAH), dry matter to 21 DAH, phytotoxicity at 7, 14 and 21 DAH and chlorophyll content through readings with chlorophyll. From the results, it was observed that the application of fertilizers did not affect the early development of rice cultivation and selectivity of herbicides applied. Regarding the assessment of phytotoxicity, the profoxidim caused the highest rates.

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Chemical management of weeds in corn hybrids

Galon

David

Forte

et al. 2018

Weed Biology and Management

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Corn stands out among the cultivars because of its high importance in food, animal feed and raw materials for energy production. The quantity and quality of the harvested grain can be reduced, mainly due to inadequate weed management. Nowadays, weed control is accomplished with the use of herbicides as pre-emergence and postemergence, applied alone or in a tank mix. This study aimed to evaluate the efficiency of the control of weeds and phytotoxicity of the herbicides that were applied in tank mix or isolated in the corn hybrids, Formula TL ® and SYN 7B28. Two experiments were conducted: in the 2012/2013 season (Formula TL ® ) and 2013/2014 season (SYN 7B28). There was a low initial phytotoxicity of all the tested herbicides in the initial evaluation; however, from 14 days after treatment, it was minimal. The weed control of Ipomoea indivisa, Urochloa plantaginea and Euphorbia heterophylla in both experiments was better, in general, when using the tank mixtures of atrazine + simazine + tembotrione and atrazine + simazine + mesotrione, respectively. The application of atrazine + simazine + tembotrione in the SYN 7B28 hybrids provided, with the exception of the thousand-grain weight, the best expression of grain yield components, combining a low phytotoxicity and best control of the weeds. The Formula TL ® hybrid presented the highest mass of a thousand grains and yield with the application of nicosulfuron + tembotrione. The yield average difference of the herbicide treatments and the unweeded control showed an increase of 27.66 and 34.59% in the grain yield of the corn hybrids, Formula TL ® and SYN 7B28, respectively. Aureo, methylated soybean oil; MOAH, mineral oil aromatic hydrocarbon; MSO, methylated seed oil. 28L. Galon et al.

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Eficácia e fitotoxicidade de herbicidas aplicados para manejo de plantas daninhas infestantes do trigo

Cited by 7 publications

References 21 publications

Selectivity of 2,4-D salts to barley plants applied at distinct phenological crop stages

Selectivity of 2,4-D salts to barley plants applied at distinct phenological crop stages

Desempenho inicial de arroz irrigado decorrentes da aplicação de fertilizantes na seletividade de herbicidas

Chemical management of weeds in corn hybrids

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