Extrato de alho e óleo vegetal no controle do míldio da videira

Leite, Carla Daiane; Botelho, Renato Vasconcelos; Faria, Cacilda Márcia Duarte Rios; Maia, Aline José

doi:10.1590/s0100-29452011000200013

Cited by 6 publications

(8 citation statements)

References 16 publications

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“…The authors attributed this higher fungistatic activity to the loss of the antifungal properties of the extracts, due to the longer incubation period. Leite et al (2011) also reported fungistatic activity of garlic extract and vegetable oil in the control of grapevine downy mildew and germination of sporangia of P. viticola causative agent.…”

Section: Effect Of Volatile Compounds Of Essential Oils On the Spore mentioning

confidence: 95%

“…In the worldwide literature, there is a significant increase in the number of studies that seek to find antifungal activity of essential oils as an alternative control of several plant pathogens, with promising results for cinnamon (RANASINGHE et al, 2002;KISHORE et al, 2007;MAQBOOL et al, 2010), eucalyptus (LORENZETTI et al, 2012), marjoram (FIALHO, 2012), melaleuca (FRASSON et al,2010), peppermint (CHAGAS et al, 2014) oregano (MALLET et al, 2014) and white thyme oils (PERINA et al, 2015). Aiming at to contribute to one more option to control the downy mildew of the grapevine, the objective of this study was to evaluate the antifungal effect of essential oils on the spore germination of P. viticola, a causal agent of grapevine downy mildew.…”

Section: Introductionmentioning

confidence: 99%

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Fungitoxicity of Essential Oils on Plasmopara Viticola,causal Agent of Grapevine Downy Mildew

et al. 2017

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ABSTRACT-This study aimed to evaluate the fungitoxic (antifungal) effect of seven essential oils on Plasmopara viticola, the causal agent of grapevine downy mildew. The cinnamon, eucalyptus globulus, marjoram, melaleuca, peppermint, oregano and white thyme essential oils were compared with the mancozeb + metalaxyl-M fungicide. Three experiments were conducted to evaluate the effect of essential oils on spore germination. The first experiment evaluated the effect of direct contact of essential oils on the pathogen; the second evaluated the effect of volatile compounds on the pathogen and the third assessed the behavior of essential oils, when applied to vine leaves in field conditions, on the pathogen. All essential oils inhibited the spores' germination, but in varying degrees, in addition, presenting fungistatic activity. All the essential oils showed chemical instability when the incubation time or the interval between products application where increased, all oils decrease antifungal activity percentage. Noteworthy, the cinnamon and the eucalyptus globulus essential oils were the most fungitoxic (antifungal) on P. viticola. Index terms: Fungicidal activity, fungistatic activity, alternative control, spore germination. FUNGITOXICIDADE DE ÓLEOS ESSENCIAIS SOBRE

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Section: Effect Of Volatile Compounds Of Essential Oils On the Spore mentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Fungitoxicity of Essential Oils on Plasmopara Viticola,causal Agent of Grapevine Downy Mildew

et al. 2017

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“…Na videira, o óleo vegetal associado ao extrato de alho (Allium sativum) afetou negativamente a germinação de P. viticola e a severidade do míldio em condições de campo (Leite et al, 2011). Este óleo associado ao extrato aquoso de cinamomo (Melia azedarach) controlou outra importante doença da videira denominada de antracnose da videira (Silva et al, 2012b).…”

Section: Discussionunclassified

“…Silva et al (2012a) observaram que em condições de campo (videiras da casta 'Isabel'), a aplicação isolada do óleo vegetal na dose de 2,5 mL L-1 proporcionou uma redução de 76,3% na AACED do míldio em relação à testemunha absoluta (somente água), enquanto que em outro ensaio, verificou-se que o óleo vegetal proporcionou uma redução de 64,0% na AACED para a antracnose da videira (Silva et al, 2012b). Leite et al (2011) verificaram que o óleo vegetal na dose de 2,5 mL L -1 reduziu em 52% a AACED do míldio da videira em relação ao tratamento testemunha. Em outros patossistemas, o óleo vegetal de sementes de Brassicaceae destacou-se no controle do oídio do melão, quando comparado com fungicidas convencionais, como pentaconazole, miclobutanil, azoxystrobin e enxofre (Candido et al, 2014).…”

Section: Efeito Do óLeo Vegetal No Controle Do Míldio Na Casta 'Isabeunclassified

Óleo vegetal no controle do míldio em videiras casta ‘Isabel Precoce’ em sistema biológico

Garcia

Faria

Botelho

et al. 2015

Ciência Téc. Vitiv.

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RESUMOO trabalho teve como objetivo verificar o efeito de um óleo vegetal no controle do míldio da videira (Plasmopara viticola). Os tratamentos consistiram de concentrações crescentes de um óleo vegetal (OV) emulsionável (0; 0,05; 0,1; 0,2; 0,4 e 0,8 mL L -1 ) sendo o tratamento padrão realizado com calda bordalesa em ensaios in vitro em videiras da casta 'Isabel Precoce' (Vitis labrusca) em sistema de agricultura biológica. Foram realizados testes de germinação de esporângios de P. viticola, além da estimativa da área abaixo da curva de evolução da doença (AACED) do míldio em discos de folhas e em videiras mantidas em estufa e no campo, em dois anos consecutivos (2012/2013 e 2013/2014). Observou-se que as concentrações de OV reduziram a germinação do patógeno e a eficiência estava diretamente relacionada com o período de contato do produto com os esporângios. Nos discos de folha as concentrações 0,2; 0,4 e 0,8 mL L -1 reduziram acima de 80% a AACED do míldio. Em estufa a concentração 0,40 mL L -1 do composto testado não diferiu estatisticamente da calda bordalesa, reduzindo a AACEPD em mais de 60% nos dois ensaios. Em condições de campo, aplicações de OV entre 0,1 e 0,2 mL L -1 reduziram em até 61% a AACED do míldio em dois anos consecutivos. Ambas as modalidades não diferiram estatisticamente do tratamento padrão. Os resultados destes trabalhos indicaram que pulverizações da solução aquosa de óleo vegetal testada apresentaram resultados promissores em condições de campo, em estufa e em in vitro, embora com diferentes respostas para as concentrações testadas, condições de cultivo e ano. SUMMARYThe study aimed to verify the effect of a vegetable oil in control of downy mildew (Plasmopara viticola). The treatments consisted of increasing concentrations of a vegetable oil (OV) emulsifiable (0; 0.05; 0.1; 0.2; 0.4 and 0.8 mL L -1 ) being carried out with the standard treatment of bordeaux mixture in vitro tests on grape variety 'Isabel Precoce' (Vitis labrusca) in organic farming system. Sporangia germination tests were performed for P. viticola, besides the estimate of the area under the curve of evolution of the disease (AUCED) the leaf discs mildew in vines and maintained in the greenhouse and field in two consecutive years (2012/2013 and 2013/2014). It was observed that the VO concentrations reduced the germination of the pathogen and the efficiency was directly related to the product contact time with the sporangia. In leaf discs concentrations 0.2; 0.4 and 0.8 mL L -1 reduced up to 80% AUCED mildew. In greenhouse concentration 0.40 mL L -1 of the compound tested did not differ statistically from Bordeaux mixture, reducing AUCED in more than 60% in the two trials. In field conditions, VO applications between 0.1 and 0.2 mL L -1 reduced by up to 61% to AUCED mildew in two consecutive years. Both methods did not differ statistically from the standard treatment. The results of these studies indicate that spraying the aqueous solution of vegetable oil tested showed promising results under field conditions in the ...

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“…For vine leaf diseases, garlic extract provided control of Plasmopara viticola [4] Phomopsis viticola and Elsinoe ampelina [5,6]. The garlic extract was also effective in controlling in vitro Botryosphaeria dothidea, Diplodia a e-mail: carine.rusin@gmail.com seriata andEutypa lata, Macrodidyma Ilyonectri and Phaeocremonium aleophilum [7].…”

Section: Introductionmentioning

confidence: 99%

Antifungal activity of plant extracts onPhaeomoniella chlamydospora

et al. 2016

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Abstract. The decline and death of the vine has become an obstacle to world wine production. Among the causative agents highlights the Phaeomoniella chlamydospora, causal agent of Esca and Petri disease. Plant extracts may become a viable option control considering their fungistatic and/or fungicide substances. The objective of this work was to verify the potential of the aqueous extracts of plants on the control of Phaeomoniella chlamydospora comparing to other products. The following treatments were applied: sulfur, mancozeb, difeconazole, pyraclostrobin, tebuconazole, chitosan, Bacillus subtilis, Trichoderma harzianum, and extracts of india flowers, cinnamon bark, dried leaves of rosemary and lemon grass. The treatments were added in PDA culture medium, previously autoclaved at 120 o for 20 min. Disc of 5 mm diameter of P.chlamydospora colony were transferred to the center of Petri dishes and kept at 20• C in the dark. The experimental design was completely randomized with five replications. It was evaluated the mycelial growth at five, eight and fourteen days after the installation of the experiment, obtaining the area under curve of the mycelial growth (AUCMG). The clove India extracts, cinnamon and rosemary, proved to be a control option considering their effect in the decrease of AUCMG compared to the control.

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Extrato de alho e óleo vegetal no controle do míldio da videira

Cited by 6 publications

References 16 publications

Fungitoxicity of Essential Oils on Plasmopara Viticola,causal Agent of Grapevine Downy Mildew

Fungitoxicity of Essential Oils on Plasmopara Viticola,causal Agent of Grapevine Downy Mildew

Óleo vegetal no controle do míldio em videiras casta ‘Isabel Precoce’ em sistema biológico

Antifungal activity of plant extracts onPhaeomoniella chlamydospora

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