Crescimento de cultivares de café arábica submetidos a doses do glyphosate

França, André Cabral; Freitas, M.A.M.; Fialho, Cíntia Maria Teixeira; Silva, A.A.; Reis, Marcelo Rodrigues dos; Galon, Leandro; Filho, Ricardo Victória

doi:10.1590/s0100-83582010000300017

Cited by 30 publications

(33 citation statements)

References 28 publications

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“…Glyphosate is a systemic herbicide that, when absorbed, translocates through the plant, following the route of the products of photosynthesis, from the photosynthetically active leaves towards the parts of plants that use these products, establishing a path from source to drain (Caseley & Coupland, 1985). Thus, the herbicide affects the growing points of the plant, also present in the stem apex, hindering growth in that region, according observed in this work and by França et al (2010).…”

Section: Resultssupporting

confidence: 69%

“…Chlorosis and narrowing of young leaves, which had expanded after the applying of glyphosate, were also observed in different coffee cultivars after receiving rates of glyphosate (França et al, 2010). The symptom of chlorosis caused by the herbicide may be due to the fact that glyphosate indirectly hinders the synthesis of chlorophyll, as found in soybean plants by Ding et al (2011).…”

Section: Resultsmentioning

confidence: 89%

“…This behavior followed a continuous decreasing linear trend with increased herbicide dose, resulting in 0.0203 and 0.0062 gram for each gram of herbicide, respectively, for plants inoculated and noninoculated with mycorrhizal fungi (Figure 2A). França et al (2010França et al ( , 2013 have found that glyphosate drift has negatively influenced the height increase, as doses were increased for different cultivars of Coffea arabica at 45 days after herbicide application. Glyphosate is a systemic herbicide that, when absorbed, translocates through the plant, following the route of the products of photosynthesis, from the photosynthetically active leaves towards the parts of plants that use these products, establishing a path from source to drain (Caseley & Coupland, 1985).…”

Section: Resultsmentioning

confidence: 99%

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Glyphosate drift affects arbuscular mycorrhizal association in coffee

et al. 2014

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-Mycorrhizal association promotes better survival and nutrition of colonized seedling on field, and consequently, increasing of productivity. However, the weed management can interfere on this association, due to incorrect use of glyphosate. This work has assessed the effects of glyphosate drift on the growth and nutrition of arabica coffee plants (Catuaí Vermelho -IAC 99) colonized with arbuscular mycorrhizal fungi (AMF). The experiment was conducted in 2 x 5 factorial scheme, and included inoculated and non-inoculated plants, and five glyphosate subdoses (0.0, 57.6, 115.2, 230.4, and 460.8 g ha -1 of glyphosate), in randomized blocks with five replication. The inoculation was carried during the greenhouse phase of seedlings production with a mixture of Rhizophagus clarus and Gigaspora margarita, and after to transplanting, when the plants had seven pairs of leaves, glyphosate subdoses were applied. The product caused intoxication in up to 60% of non-inoculated and 45% on inoculated plants, when the highest dose of 460.8 g a.e. ha -1 was applied. A negative effect was noted on the growth and phosphorus content of coffee plants, this effect increased depending on glyphosate subdose, but regardless of inoculation. Glyphosate drift reduces the growth and nutrition of plants colonized by species of AMF and native fungi, negatively affecting root colonization of plants treated.Keywords: Coffea arabica, glyphosate drift, mycorrhiza, Rhizophagus clarus, Gigaspora margarita. (0; 57,6; 115,2; 230,4; e 460,8 RESUMO -A associação micorrízica favorece o estabelecimento, a sobrevivência no campo e a nutrição da planta hospedeira, levando por consequência, a maior crescimento e produtividade. Todavia, o manejo de plantas daninhas no cafeeiro pode interferir nessa associação, podendo o emprego incorreto do glyphosate influenciar nesses benefícios da associação. Avaliou-se neste trabalho efeito da deriva do herbicida glyphosate no crescimento e estado nutricional de plantas de café arábica (Catuaí Vermelho IAC 99) inoculadas com fungos micorrízicos arbusculares (FMAs). Para isso, utilizou-se esquema fatorial 2 x 5, sendo mudas inoculadas ou não inoculadas com FMAs e cinco subdoses de glyphosate

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Section: Resultssupporting

confidence: 69%

Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

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Glyphosate drift affects arbuscular mycorrhizal association in coffee

et al. 2014

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“…Hormetic effects of low doses of glyphosate were observed in young plants of eucalyptus, pine (Velini et al, 2008), and coffee (Carvalho and Alves, 2012;Carvalho et al, 2012aCarvalho et al, , 2013a. On the other hand, Tuffi Santos et al (2006) and França et al (2010) found no hormesis with glyphosate on coffee and eucalyptus plants, respectively. However, the hormetic effect of low doses of glyphosate is dependent on the plant species (Tuffi Santos et al, 2006), the growing conditions (Belz and Cedergreen, 2010), the plant growth stage at the moment of the exposure to the herbicide (Velini et al, 2008;Carvalho et al, 2013a), and the end point measured and the time of its measurement after treatment (Belz et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Plant Growth Responses of Apple and Pear Trees to Doses of Glyphosate

et al. 2016

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-Glyphosate is commonly used for intra-row weed management in perennial plantations, where unintended crop exposure to this herbicide can cause growth reduction. The objective of this research was to analyze the initial plant growth behavior of young apple and pear plants exposed to glyphosate. Glyphosate was sprayed on 2-year-old 'Gala' apple and 'Abbè Fetel' pear plants at doses from 18 to 720 g per hectare of acid equivalent (a.e.). The plant height of neither species was not significantly reduced (less than 1%) by any glyphosate dose at 240 days after spraying, whereas the stem diameter and the dry mass of stem and leaves were reduced by 720 g a.e. ha -1 . The glyphosate dose required to reduce the aboveground dry mass by 50% was 162 and 148 g a.e. ha -1 for apple and pear, respectively. Aboveground dry mass was reduced 2% and 6% for apple and pear plants, respectively, at 720 g a.e. ha -1 . Hormesis was not observed in either species at doses down to 18 g a.e. ha -1 . Both species showed low susceptibility to glyphosate; however apple was less susceptible than pear. Keywords: N-phosphonomethyl-glycine, Malus domestica, Pyrus communis, spray drift. RESUMO -Glyphosate é comumente usado para manejo de plantas daninhas na linha de plantio de culturas perenes, onde a exposição não intencional da cultura a esse herbicida pode causar redução do crescimento. O objetivo desta pesquisa foi analisar o comportamento do crescimento inicial de

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“…Weed management in coffee plantations are performed using directed spraying on the plant rows, however, application of non-selective herbicides with inadequate conditions of spraying pressure, boom height, operation speed and wind at the spraying time can cause problems related to the drift, causing visual phytotoxicity and prolonged and irreversible physiological damage to the coffee crop growth (FRANÇA et al, 2010a;FRANÇA et al, 2010b;CARVALHO et al, 2013;CARVALHO et al, 2014;SCHRÜBBERS et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

Selectivity of Saflufenacil Applied Singly and in Combination With Glyphosate on Coffee and Citrus Crops

et al. 2016

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-Saflufenacil is absorbed by the plant leaves and roots, thus the residual permanence of this herbicide can cause losses to the crop plants. Therefore, the objective of this study was to evaluate the selectivity of the saflufenacil herbicide, applied singly and in combination with glyphosate, on coffee and citrus plants grown in a sandy soil. Two experiments were implemented and conducted in completely randomized design with four replications. The chemical treatments consisted of three sequential applications, with directed spraying of saflufenacil at rates of 0.035, 0.07 and 0.105 kg a.i. ha -1 , glyphosate at rate of 2.160 kg a.e. ha -1 , the two herbicides combined at the same rates, and a control without chemical treatment. The saflufenacil applied singly and in combination with glyphosate was selective for coffee and citrus plants, which presented no visual toxicity symptoms. The sequential application of saflufenacil, singly and in combination with glyphosate did not affect the growth of coffee and citrus plants. The saflufenacil has potential for use, in combination with glyphosate on controlling many weed species in coffee and citrus areas without any interference on the development of these species.Keywords: Development. Directed spraying. Herbicide. Phytotoxicity. SELETIVIDADE DO SAFLUFENACIL ISOLADO E EM ASSOCIAÇÃO COM GLYPHOSATE EM CULTURAS DE CAFÉ E CITROSRESUMO -O saflufenacil é absorvido pelas folhas e raízes das plantas, por isso a permanência residual deste herbicida pode provocar prejuízos para as plantas cultivadas. Portanto, este trabalho teve como objetivo avaliar a seletividade do herbicida saflufenacil aplicado isolado e em associação com glyphosate, em plantas de café e citros cultivadas em solo arenoso. Foram instalados e conduzidos dois experimentos no delineamento inteiramente casualizado, com quatro repetições. Os tratamentos químicos consistiram de três aplicações sequenciais, com jato dirigido de saflufenacil nas doses de 0,035, 0,07 e 0,105 kg i.a. ha -1 , de glyphosate na dose de 2,160 kg e.a. ha -1 , e da associação dos dois herbicidas nas mesmas doses, além de uma testemunha sem tratamento químico. O saflufenacil aplicado isolado e em associação com glyphosate foi seletivo para plantas de café e citros, não apresentando nenhum sintoma visual de intoxicação nas plantas. A pulverização sequencial de saflufenacil isolada e em associação com glyphosate não afetou o crescimento das plantas de café e citros. O saflufenacil tem um potencial de uso em associação com glyphosate para fornecer controle de muitas espécies de plantas daninhas em áreas de café e citros sem nenhuma interferência no desenvolvimento destas espécies. Palavras-chave:Desenvolvimento. Jato dirigido. Herbicida. Fitointoxicação.

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Crescimento de cultivares de café arábica submetidos a doses do glyphosate

Cited by 30 publications

References 28 publications

Glyphosate drift affects arbuscular mycorrhizal association in coffee

Glyphosate drift affects arbuscular mycorrhizal association in coffee

Plant Growth Responses of Apple and Pear Trees to Doses of Glyphosate

Selectivity of Saflufenacil Applied Singly and in Combination With Glyphosate on Coffee and Citrus Crops

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