Extract Of Coffee Leaf
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Extracts of the Native Brazilian Tree Garcinia gardneriana Inhibit Urediniospore Germination of Coffee Leaf Rust Fungus
The fungal Hemileia vastatrix is the causal agent of coffee leaf rust, one of the worst and devastating disease in coffee cultures worldwide. As a result of our research on natural products for the development of novel agrochemicals, we found that the hexane extract from leaves of the Brazilian medicinal plant Garcinia gardneriana, at 500 μg mL-1, inhibited
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. URSOLIC ACID AND CIS-TILIROSIDE PRODUCED BY Merremia tomentosa AFFECT OVIPOSITION OF Leucoptera coffeella ON COFFEE PLANTS
To contribute to the development of new products to control the coffee leaf miner (Leucoptera coffeella), which is a major pest for coffee plants, this work aimed to select plant species able to produce substances active against this insect and to identify the active substances in the selected plant and their protein targets in the insect. Among the extracts
Quím. Nova. Publicado em: 2018-03
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3. Secagem por atomização e caracterização química de extratos de folhas de café / Secagem por atomização e caracterização química de extratos de folhas de café
O Brasil é atualmente o maior produtor e exportador de café do mundo. O extrato de folha de café tem sido estudado como indutor de resistência em plantas sendo uma nova forma de combate às doenças com bons resultados em diversas cultivares, porém ainda não foi sugerido como chá, apesar de conter diversas substâncias benéficas à saúde humana. O p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/07/2011
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4. Plant Extracts as an Alternative to Control Leucoptera coffeella (Guérin-Mèneville) (Lepidoptera: Lyonetiidae)
We evaluated the effects of crude extracts from the plantain Plantago lanceolata and the bitter gourd Momordica charantia on the oviposition preference and development of the coffee leaf miner Leucoptera coffeella Guérin-Mèneville & Perrottet under laboratory and/or greenhouse conditions. The ovicidal effects of these extracts were also studied in a greenh
Neotropical Entomology. Publicado em: 2011-02
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5. PurificaÃÃo e identificaÃÃo de substÃncias de Chrysophyllum gonocarpum (Mart &Eichler) Engl ativas contra o bicho mineiro do cafeeiro / Purification and identification of substances from Chrysophyllum gonocarpum (Mart. &Eichler) Engl. active against the coffee leaf miner.
Since the coffee leaf miner causes plantation defoliation that accounts for losses in coffee production, this insect is considered a very important pest in coffee farms. Thus, the present study aimed to contribute to the development of new insecticides of plant origin to control such insect. Consequently, a phytochemical study about leaves of Chrysophyllum g
Publicado em: 2009
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6. Pharmacognostic study, investigation of antimicrobial activities, leishmanicidal and toxicity of Rhamnidium elaeocarpum Reissek - Rhamnaceae (little coffee) / Estudo Farmacognóstico, Investigação das Atividades Antimicrobiana, Leishmanicida e Toxicidade Aguda de Rhamnidium elaeocarpum Reissek RHAMNACEAE (Cafezinho)
In the last years the treatment with medicines made from medicinal plants has increased. A concern about the useful of these natural products is the quality control pharmacobotanical, phytochemical and purity tests, which make up the technical specifications of a particular plant species. Moreover, pharmacological and toxicological studies must be conducted
Publicado em: 2009
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7. Plant extracts and commercial products for the management of coffee rust and mechanisms of coffee defense against Cercospora leaf spot. / Extratos vegetais e produtos comerciais no manejo da ferrugem e nos mecanismos de defesa do cafeeiro à cercosporiose
The aim of this study was to evaluate the effect of plant extracts and commercial products against rust in a conventional farming system. Furthermore, to assess the defense mechanisms of coffee seedlings against Cercospora leaf spot. The rust experiment was conducted in a coffee field (Cultivar Rubi) with 10 year old at the campus of Federal University of La
Publicado em: 2008
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8. Aspectos bioquímicos em plantas de cafeeiro tratadas com silício / Biochemical features in coffee plants treated with silicon
Most plants can defend themselves against fungal infections by natural means, which can be induced by a number of biotic and abiotic elicitors. Soluble silicon (Si) has been shown to induce resistance in a number of plant species against several pathogens. The objective of this work was to assess the influence of silicon application of symptoms caused by the
Publicado em: 2008
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9. Bicho-mineiro do cafeeiro: anÃlise da digestÃo e inibiÃÃo de tripsina por extratos de folhas de mamona. / Coffee leaf miner: Digestion and trypsin inhibition using castor beam leaves extracts.
Coffee is a crop of great social and economic importance to Brazil and its production is affected by a number of pests and diseases. One of those pests is the coffee leaf miner, Leucoptera coffeella (GuÃrin-MÃneville, 1842) (Lepidoptera: Lyonetiidae) which can cause great losses in production. The forms of controlling the coffee leaf miner known and utiliz
Publicado em: 2007
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10. Diseases under organic cultivation of coffee (Coffea arabica L.): epidemiology and alternative control / âDoenÃas em cultivo orgÃnico do cafeeiro (Coffea arabica L.) : epidemiologia e controle alternativoâ
In the years of 2005 and 2006 two trials were installed in eight year old coffee plantations of the cv. Acaià MG-474-19, under organic and conventional crop systems, in Santo AntÃnio do Amparo, Minas Gerais. The progress of rust and brown eye spot diseases of coffee was assessed as a function of the effect of different biofertilizers, between December/2004
Publicado em: 2007
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11. Epidemiology and management of coffee (Coffea arabica L.) diseases under organic farming. / Epidemiologia e manejo de doenÃas do cafeeiro (Coffea arabica L.) sob cultivo orgÃnico
The present work aimed to study coffee diseases on organic crop system. For that, rust and black eye spot disease progress on organic and conventional crop systems were compared. The effect of nutrient sources in the disease management was evaluated and, finally, the effect of plant extracts in the protection of coffees in the organic system was tested. The
Publicado em: 2006