Control of grassy weeds in annual canarygrass

Cogliatti, M.; Juan, V.F.; Bongiorno, Francisco; Valle, H. Dalla; Rogers, William J.

doi:10.1016/j.cropro.2010.11.002

Cited by 12 publications

(11 citation statements)

References 4 publications

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“…For the evaluation of phytotoxicity the adapted scale from [10,11,12] was used, with 0 = for absence of phytotoxicity; 1–25 = light chlorosis or beginning of necrosis on the seedlings leaves; 26–50 = medium chlorosis or necrosis on the seedlings leaves; 51–75 = high chlorosis or necrosis on the seedlings leaves; and 76–100 = wilt and dryness of the plant.…”

Section: Methodsmentioning

confidence: 99%

The Efficiency of Noni (Morinda citrifolia L.) Essential Oil on the Control of Leaf Spot Caused by Exserohilum turcicum in Maize Culture

et al. 2017

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The objective of this work was to evaluate the efficiency of noni essential oil on the control of Exserohilum turcicum, a causative agent of Exserohilum spot in maize culture. In the sanitary test 400 seeds were incubated using the blotter test method. For the transmissibility test, the fragments of damaged leaves of seedlings were removed and put into a potato, dextrose and agar (PDA) culture environment. To verify the pathogenicity, Koch´s postulates were performed. In the phytotoxicity test different concentrations of noni oil were applied in maize seedlings. E. turcicum conidia were submitted to different concentrations of noni oil. In the preventive and curative tests noni essential oils were applied before and after the conidia inoculation, respectively. The results revealed the presence of fungi of the genres Aspergillus, Penicillium, Rhizopus, Fusarium, and Exserohilum in the maize seeds. The pathogenicity of E. turcicum and also the transmission of this fungus from the seeds to the maize seedlings was confirmed. The inhibition of conidia germination was proportional to the concentration increase. The preventive application of noni essential oil was the most efficient on the control of Exserohilum spot.

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Section: Methodsmentioning

confidence: 99%

The Efficiency of Noni (Morinda citrifolia L.) Essential Oil on the Control of Leaf Spot Caused by Exserohilum turcicum in Maize Culture

et al. 2017

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“…The plants were sprayed late in the afternoon to prevent oil evaporation until they were soaked, and were kept in the laboratory after spraying for a period of 24 hours at 25 ± 2 °C. The phytotoxicity evaluation was carried out after 24 hours using the adapted scale of Dequech et al (2008), Freitas et al (2009) and Cogliatti et al (2011), where: 0% = absence of phytotoxicity; 1-25% = slight necrosis in the leaves or mild chlorosis of the plant; 26-50% = moderate leaf necrosis or moderate chlorosis of the plant; 51-75% = severe leaf necrosis or severe chlorosis of the plant; 76-100% = wilt and dryness of the plant.…”

Section: Phytotoxicity Testmentioning

confidence: 99%

Essential Oils for Alternative Teak Rust Control

et al. 2018

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The objectives of this study were to evaluate the effect of lemon grass, citronella grass, Mexican-tea and noni essential oils on urediniospore germination of Olivea neotectonae, the agent responsible for rust in Teak (Tectona grandis L.f.); to evaluate the phytotoxic effect of these essential oils on teak seedlings; and to evaluate the use of essential oils to control rust in teak plants when preventively and curatively applied. We found that the noni and lemon grass essential oils inhibited 100% of urediniospore germination. On the other hand, the essential oils from noni and lemon grass caused phytotoxicity when applied to seedlings at concentrations of 2000 and 1500 μL L-1 , respectively. The major constituents found in lemon grass essential oil were Geranial and Neral, while Octanoic Acid was found in noni oil. Lower values in the area below the rust progress curve were observed with the preventive application of lemon grass and noni essential oils.

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“…A pulverização ocorreu aos 18 dias após a semeadura, uma vez que nesta fase, todas as plântulas já apresentavam no mínimo duas folhas definitivas. Decorridas vinte e quatro horas após a aplicação, foi feita a avaliação utilizando-se a seguinte escala de fitotoxicidade adaptada (Cogliatti et al 2011;Dequech et al 2008;Freitas et al 2009): 0% = ausência de fitotoxicidade; 1 a 25% = clorose a início de necrose nas folhas; 26 a 50% = necrose em algumas áreas nas folhas; 51 a 75% = acentuada necrose em várias áreas nas folhas; 76 -100% = murcha total da planta). Os dados foram submetidos à análise de variância (ANOVA).…”

Section: Methodsunclassified

Fitotoxicidade de óleos essenciais em plantas de melancia, feijão e arroz

Brum

Castro²,

Gama³

et al. 2014

J. Biotechnol. Biodivers.

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Objetivou-se avaliar a ação dos óleos essenciais de citronela (Cymbopogon nardus), capim-limão (Cymbopogon citratus), erva-cidreira (Lippia alba) e hortelã-pimenta (Mentha piperita) sobre plantas de melancia (Citrullus lanatus), feijão-carioca (Phaseolus vulgaris) e arroz (Oryza sativa). Para cada cultura foi utilizado o delineamento inteiramente casualizado em esquema fatorial com quatro repetições, em que os fatores foram quatro tipos de óleos essenciais e quatro concentrações dos óleos (0,5; 1; 2; e 4%). Dezoito dias após o plantio, as plantas foram pulverizadas com as soluções dos óleos essenciais, e 24 horas depois foi feita a avaliação de fitotoxicidade utilizando-se a escala de notas de zero (0) (ausência de fitotoxicidade) a 100 (100%) (murcha total da planta). A concentração de 2% dos óleos essenciais avaliados foi fitotóxica para as três espécies de plantas. Em plântulas de melancia o óleo de capim-limão foi o mais fitotóxico, onde nas concentrações de 2 e 4% apresentou toxicidade de 68,75 e 75%, respectivamente. O feijão foi o menos sensível aos óleos essenciais, apresentando 50% de fitotoxicidade quando submetido aos óleos de citronela e capim-limão a 4%. Ocorreu murcha e ressecamento das plantas de arroz sob 4% dos óleos de hortelã-pimenta e citronela.

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Control of grassy weeds in annual canarygrass

Cited by 12 publications

References 4 publications

The Efficiency of Noni (Morinda citrifolia L.) Essential Oil on the Control of Leaf Spot Caused by Exserohilum turcicum in Maize Culture

The Efficiency of Noni (Morinda citrifolia L.) Essential Oil on the Control of Leaf Spot Caused by Exserohilum turcicum in Maize Culture

Essential Oils for Alternative Teak Rust Control

Fitotoxicidade de óleos essenciais em plantas de melancia, feijão e arroz

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