Laboratory evaluation of the effects of Attract & Kill formulations on Anastrepha Fraterculus.

A new atract & kill (A&K) formulation was dcveloped by ISCA Tccnologias to control fruit flies, In laboratory tests, we compared the efficacy of this new formulation with three cornrnercial products used by fruit growers in southern Brazil. Mortality tests were performed with Anastrepha fraterculus (Diptera: Tephntidae) and results showed that the effecuveness of Anarosa forrnulations was directly proportional to increasing dose of insecticide. Formulations containing organophosphates and cypennethrin produced similar mortality results. The Anarosa formulations, regardless of the insecticide dose, were more effective than GF 120 for A, fraterculus control.Resumo

A importância da pesquisa genômica e o sequenciamento de DNA.

bitstream/CENARGEN/24079/1/cot091.pd

Feromônios sexuais no manejo de insetos-praga na fruticultura de clima temperado.

bitstream/item/95271/1/Feromonios-ULTIMA-VERSAO-08-07-2013.pdf; bitstream/item/95273/1/Capa-Feromonios.pd

Assessment of SPLAT formulations to control Grapholita molesta (Lepidoptera:Tortricidae) in a Brazilian apple orchard.

Mating disruption is a technique that uses synthetic copies of sex pheromones to control insect pests. We aimed to control Oriental fruit moth (OFM) Grapholita molesta (Busck) (Lepidoptera: Tortricidae) with formulations of SPLAT Grafo (SG) and SPLAT Grafo Attract and Kill (SGAK) in small (1 ha) apple (Malus domestica Borkh.) orchards. Our experiment was conducted in a commercial orchard with Gala trees (spacing 1.5 × 4.5 m) in Vacaria, Rio Grande do Sul State, Brazil. We evaluated the effect of four treatments on G. molesta population densities: a) SG at 1 kg ha-1 (300 point sources of 3.3 g each), b) SGAK at 1 kg ha-1 (1000 point sources of 1 g each), c) insecticides as recommended by Integrated Apple Production (IAP), and d) untreated control (no treatment). Specialized Pheromone and Lure Application Technology (SPLAT) treatments were applied on 1 August 2004 and reapplied after 120 d (1 December 2004). The treatment effect was evaluated by weekly counts of males captured in Delta traps baited with commercial synthetic sex pheromone lures (eight traps per treatment). We assessed fruit damage caused by G. molesta in eight replicates of 200 fruits each on 26 October, 30 November 2004, and 5 and 31 January 2005. Applying 1 kg ha-1 of SG and SGAK in August and December 2004 significantly reduced the number of male moths caught in Delta traps. Damage to fruits at harvest, however, did not differ significantly from the control. This indicates a decline in the efficacy of mating disruption when SG and SGAK are used to protect small areas (1 ha) under high Oriental fruit moth pressure

Índice de estresse hídrico da cultura do feijoeiro irrigado.

A determinacao das necessidades hidricas de culturas, em seus diferentes estadios de desenvolvimento, e uma etapa importante para o manejo de irrigacao. Entre os metodos usualmente utilizados, destacam-se o metodo gravimetrico, medidas do potencial de agua na folha, tensiometros e climatologicos. A utilizacao de tecnicas de sensoriamento remoto apresenta-se como uma alternativa importante por permitir a deteccao do status de agua da planta, em funcao da emitancia radiante da superficie da cultura. Dentre os equipamentos usados destaca-se o termometro a infravermelho por sua praticidade de uso. Neste estudo utilizou-se a termometria infravermelha, associada ao balanco de energia para obtencao de um indice de estresse hidrico da cultura (IEHC) do feijoeiro (Phaseolus vulgaris L.) que possibilitasse ao irrigante saber em tempo real, nos diferentes estadios de desenvolvimento da cultura, quando irrigar. Os valores do IEHC variaram de -0,06 a 0,053; -0,041 a 0,221 e -0,038 a 0,108, respectivamente, para os niveis de tensao de umidade do solo de 0,04; 0,06 e 0,08 MPa. Embora os indices obtidos nao tenham apresentado diferencas acentuadas entre os tratamentos, os resultados evidenciam o potencial do metodo para realizacao do manejo de irrigacao

Molecular Dynamics of Film Formation of Metal Tetrasulfonated Phthalocyanine and Poly Amidoamine Dendrimers

We performed molecular dynamics computer simulations to elucidate the behavior and properties of the metal tetrasulfonated phthalocyanine molecule and the poly(amidoamine) dendrimers in self-assembly depositions, respectively, on poly(allylamine hydrochloride) polymer and on film formed by metal tetrasulfonated phthalocyanine with poly(allylamine hydrochloride). Important physical properties of phthalocyanines were obtained such as the kinetic energy and temperature in situ. By the semiempirical model, we also obtained the UV-Vis absorption spectrum of the film formed by cobalt tetrasulfonated phthalocyanine deposited on poly(allylamine hydrochloride). We performed a study with poly(amidoamine) dendrimers on their deposition time on metal tetrasulfonated phthalocyanine, poly(allylamine hydrochloride) film, and we show the relationship of deposition time with the electrical charge and molecular mass of phthalocyanines. The deposition times of the dendrimers, as a function of their mass, were also elucidated

Fungos e seus metabólitos no controle da tiririca.

bitstream/CENARGEN/24379/1/doc104.pd