Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 5
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Avaliação de produtos alternativos para controle da requeima do tomateiro Trop. Plant Pathol.
Diniz,Lylian P.; Maffia,Luiz A.; Dhingra,Onkar D.; Casali,Vicente W. D.; Santos,Ricardo H. S.; Mizubuti,Eduardo S. G..
Em condições de campo, avaliaram-se produtos alternativos no manejo da requeima do tomateiro (Lycopersicon esculentum), causada por Phytophthora infestans, em três experimentos (E). Compararam-se, em E1, extratos de: [pimenta (Capsicum chinense) + pimenta-do-reino (Piper nigrum) + cravo (Syzygium aromaticum) + açafrão-da-índia (Curcuma longa) + alho (Allium sativum)]; (pimenta-do-reino + cravo + alho); e (cravo + açafrão-da-índia + alho); em E2, óleo de nim (Azadirachta indica) (0,5%); leite (20%); e calda bordalesa; e em E3, preparado homeopático obtido de tecido de tomateiro com requeima (dinamização C30); mistura água-etanol; e calda bordalesa. Em E1, os extratos e a testemunha não diferiram quanto à severidade na metade da epidemia (Y50), severidade...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mela; Phytophthora infestans; Lycopersicon esculentum; Epidemiologia; Extratos de plantas; Nim; Homeopatia; Calda bordalesa.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582006000200008
Imagem não selecionada

Imprime registro no formato completo
Diffusion and sorption of allyl isothiocyanate in the process of fumigation of maize AGRIAMBI
Paes,Juliana L.; Faroni,Lêda R. A.; Martins,Marcio A.; Dhingra,Onkar D.; Silva,Tales A..
The purpose of this work was to evaluate the transport of allyl isothiocyanate (AITC) by means of the sorption mechanism and the diffusion of AITC through maize grains. The experimental procedure to study the sorption mechanism was conducted by injection of AITC in glass flasks containing the grains. Kinetic models of zero, first and second order were fitted to AITC concentration data, with the purpose of determining the sorption rate (k). For the study of diffusion, a prototype was utilized in which the components are a gas chamber and a cylindrical column in which the grains were stored. At the interval of 110 min, samples in the chamber and in the column were collected, which were immediately injected into the gas chromatograph. In order to determine...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fumigant; Effective diffusion coefficient; Sorption rate.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662011000300011
Imagem não selecionada

Imprime registro no formato completo
Essential oil of mustard to control Rhizoctonia solani causing seedling damping off and seedling blight in nursery Trop. Plant Pathol.
Dhingra,Onkar D.; Costa,Maria L. N.; Silva, Jr.,Geraldo J.; Mizubuti,Eduardo S. G..
The essential oil extracted from mustard (Brassica rapa) seeds was evaluated for its effect on suppression of Rhizoctonia solani growth in vitro, and in field soils, for reducing saprophytic substrate colonization and seedling damping off and blight using snap beans as indicator plant, the in vitro growth was completely inhibited at a concentration of 50 mul/l. The saprophytic substrate colonization in soils 24 h after treatment was drastically reduced to 45% at 150 mul/kg soil concentration, in contrast to 100% colonization at concentrations of 0, 50, or 75 mul/kg. This recovery rate gradually declined to 6% and 60%, respectively, in nine days. A control of pre and post-emergence seedling damping off and blight in common beans (Phaseolus vulgaris),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allyl isothiocyanate; Flavoring agent; Soil treatment; Nursery.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582004000600017
Imagem não selecionada

Imprime registro no formato completo
Identification of the major fungitoxic component of cinnamon bark oil Trop. Plant Pathol.
Jham,Gulab N.; Dhingra,Onkar D.; Jardim,Carolina M.; Valente,Vânia M. M..
The study was done to identify the most active fungitoxic component of cinnamon bark (Cinnamomum zeylanicum) oil that can be used as a marker for standardization of cinnamon extract or oil based natural preservative of stored seeds. Aspergillus flavus and A. ruber were used as test fungi. The hexane extracted crude oil and the hydro-distilled essential oil from cinnamon bark had complete growth inhibition concentration (CGIC) of 300 and 100 µl/l, respectively. Both oils produced three fractions on preparative thin layer silica-gel chromatography plates. The fraction-2 of either oil was the largest and most active, with CGIC of 200 µl/l, but the fungitoxicity was also retained in the other two fractions. The fraction-1 and 3 of the crude oil reduced growth...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Essential oils; Antifungal activity; Fungitoxicity; Active compounds; Cinnamon oil; Seed preservative.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000400011
Imagem não selecionada

Imprime registro no formato completo
Influence of internal seedborne Fusarium semitectum on cotton seedlings Trop. Plant Pathol.
Costa,Maria L. N.; Dhingra,Onkar D.; Silva,Janaina L. da.
Fusarium semitectum was found to be the major seed colonizing fungus in the commercial acid delinted cotton (Gossypium hirsutum) seed lots. There was no correlation, however, between its incidence and seedling emergence and disease symptoms on the emerged seedlings in autoclaved sand. Inoculation technique simulating internally seedborne nature of the fungus showed that the observed non-correlation might be related to the threshold level of seed coat colonization. The internally seedborne inoculum besides reducing seedling emergence, incited an array of symptoms on the emerged seedlings, which ranged from negative geotropism, leaf tearing, collar rot leading to dry root rot and seedling mortality. The dry root rot continued to develop on the plants...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Negative geotropism; Root rot; Seedborne inoculum; Cotton diseases; Gossypium hirsutum.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000200014
Registros recuperados: 5
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional