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| 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 |
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| 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 |
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| 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 |
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