|
|
|
|
|
| Schmildt, Edilson Romais; Pratissoli, Dirceu; Amaral, José Augusto Teixeira; Schmildt, Omar. |
| A redução da área foliar é uma das causas da queda de produção em feijoeiro comum. O objetivo deste trabalho foi verificar a influência de diferentes níveis de desfolha em vários estádios de desenvolvimento sobre a produtividade, massa de 100 sementes e número de vagens por planta do feijoeiro comum da cultivar Carioca Precoce, em condições de campo no Sul do Espírito Santo. Utilizou-se o delineamento em blocos casualizados, com parcelas subdivididas, em cinco repetições. As parcelas foram constituídas por cinco épocas de desfolha (1a folha trifoliolada, florescimento, formação das vagens, enchimento das vagens, vagens secas); e as subparcelas, por quatro níveis de desfolha (0%, 33%, 67% e 100%). Houve decréscimo da produtividade com os níveis de desfolha... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feijoeiro comum; Desfolhamento; Produtividade de grãos; Massa de sementes; Vagens. |
| Ano: 2012 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/4769 |
| |
|
|
| Dalvi, Leandro Pin; Pratissoli, Dirceu; Carvalho, José Romário de; Silva, Marcos Américo; Bueno, Regiane C. O. de F.; Bueno, Adeney de Freitas. |
| Trichogramma spp. are egg parasitoids of various pest species of Lepidoptera including Trichoplusia ni, an important pest of plants in the genus Brassica. Of the climatic conditions that can impair Trichogramma spp. parasitism capacity, the temperature is critical. Thus, the objective of this research was to evaluate the parasitism capacity of Trichogramma pretiosum on eggs of T. ni at 18, 21, 24, 27, 30, and 33ºC; 70±10% RH; and 12/12 hours photophase (L/D). Fresh eggs of the host moth were offered to T. pretiosum daily. The parasitism rate varied between 8 and 11.4 eggs/female at the temperatures evaluated for the first 24 hours. The highest number of parasitized eggs per female occurred at 24ºC (53.0 parasitized eggs/female). The period of parasitism... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia/Fitossanidade/Entomologia insecta; Biological control; Horticultural plants Controle Biológico de Pragas. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17217 |
| |
|
|
| Celestino, Flávio Neves; Pratissoli, Dirceu; Machado, Lorena Contarini; Santos Junior, Hugo José Gonçalves dos; Queiroz, Vagner Tebaldi de; Mardgan, Leonardo. |
| The objective of this study was to evaluate botanical oils, mineral oils and an insecticide that contained azadirachtin (ICA) for the control of Hypothenemus hampei, in addition to the effects of residual castor oil. We evaluated the effectiveness of the vegetable oils of canola, sunflower, corn, soybean and castor, two mineral oils (assist® and naturol®), and the ICA for the control of H. hampei. The compounds were tested at a concentration of 3.0% (v v-1). The median lethal concentration (LC50) was estimated with Probit analysis. The oil of castor bean and extract of castor bean cake were also evaluated at concentrations of 3.0% (v v-1) and 3.0% (m v-1), respectively. The mortality rates for H. hampei caused by the ICA and the castor oil were 40.8 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.02.02-8 Ricinus communis; Azadirachta indica; Median lethal concentration; Fatty acids; Toxicity Entomologia Agrícola. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/27430 |
| |
|
|
| Zuim, Vitor; Rodrigues, Hígor de Souza; Pratissoli, Dirceu; Torres, Jorge Braz; Fragoso, Débora Ferreira Melo; Bueno, Regiane Cristina Oliveira de Freitas. |
| This study evaluated the parasitism of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) on eggs of Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) at different ages and densities. The rates of parasitism and emergence, the number of parasitoids emerged per egg and sex ratio of offspring were evaluated in both experiments. Eggs of H. armigera up to 36 hours provided greater parasitism and emergence of adults compared to eggs up to 60 hours old. The number of parasitoids, which emerged per host egg, was greater than one and the sex ratio remained around 80% of females, regardless of the egg development stage. Females of T. pretiosum responded with superior rates of parasitism, emergence and number of parasitoids per egg at the densities of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia; Fitossanidade; Parasitologia Agrícola Biological control; Exotic pest; Egg parasitoid; Host-parasitoid interaction; Noctuidae. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34943 |
| |
|
|
|
