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J. Rafael Verduzco Torres,Jinhyun Hong,David Philip McArthur 서울시립대학교 도시과학연구원 2022 도시과학국제저널 Vol.26 No.3
Many scholars have sought effective ways to encourage people to cycle more. A considerable amount of effort has focused on the role of dedicated cycling infrastructure. However, knowledge on the roles and interactions of other factors that are influential in addition to infrastructure in cities where the cycling network is well-developed remains incomplete. In this study, we examined how various individual-level attributes, namely psychological, habitual, and socio-demographic, in addition to the built environment characteristics relate to cycling behaviour of employees of the Erasmus University Rotterdam, in the Netherlands, where comprehensive cycling infrastructure is provided. Specifically, we investigated how these factors relate to being a cyclist or not, as well as how they are associated with regular and irregular cyclists. An online survey was conducted among employees of the university and logistic regression models were utilized for the analyses. Our results showed that the perception of behavioural control is consistently correlated with different cycling behaviour while controlling for socio-demographic and residential built environment factors. Also, we found evidence supporting a trade-off between attitudes and habit across different types of commuters. Socio-demographic factors such as gender and year of immigration to the Netherlands are only related to being engaged in cycling but not to increasing the level of engagement among employees who cycled already. The type of residential area and population/business density at destinations does not appear as a consistent covariate. We concluded that psychological and habitual factors play key roles in encouraging cycling in a city with an extensive cycling infrastructure network.
Najera, Jose Francisco Diaz,Castellanos, Jaime Sahagun,Hernandez, Mateo Vargas,Serna, Sergio Ayvar,Gomez, Omar Guadalupe Alvarado,Verduzco, Clemente Villanueva,Ramos, Marcelo Acosta The Korean Society of Plant Pathology 2018 Plant Pathology Journal Vol.34 No.3
Fruit rot is the principal phytopathological problem of pipiana pumpkin (Cucurbita argyrosperma Huber) in the state of Guerrero. The aims of this research were to 1) identify the causal agent of southern blight on pumpkin fruits by morphological, pathogenic, and molecular analysis (ITS1, 5.8S, ITS2); 2) evaluate in vitro Trichoderma spp. strains and chemical fungicides; and 3) evaluate under rainfed field conditions, the strains that obtained the best results in vitro, combined with fungicides during two crop cycles. Number of commercial and non-commercial fruits at harvest, and seed yield ($kg\;ha^{-1}$) were registered. Morphological, pathogenic and molecular characterization identified Sclerotium rolfsii as the causal agent of rot in pipiana pumpkin fruits. Now, in vitro conditions, the highest inhibition of S. rolfsii were obtained by Trichoderma virens strain G-41 (70.72%), T. asperellum strain CSAEGro-1 (69%), and the fungicides metalaxyl (100%), pyraclostrobin (100%), quintozene (100%), cyprodinil + fludioxonil (100%), and prochloraz (100%). Thiophanate-methyl only delayed growth (4.17%). In field conditions, during the spring-summer 2015 cycle, T. asperellum strain CSAEGro-1 + metalaxyl, and T. asperellum + cyprodinil + fludioxonil, favored the highest number of fruits and seed yield in the crop.
José Francisco Díaz Nájera,Jaime Sahagún Castellanos,Mateo Vargas Hernández,Sergio Ayvar Serna,Omar Guadalupe Alvarado Gómez,Clemente Villanueva Verduzco,Marcelo Acosta Ramos 한국식물병리학회 2018 Plant Pathology Journal Vol.34 No.3
Fruit rot is the principal phytopathological problem of pipiana pumpkin (Cucurbita argyrosperma Huber) in the state of Guerrero. The aims of this research were to 1) identify the causal agent of southern blight on pumpkin fruits by morphological, pathogenic, and molecular analysis (ITS1, 5.8S, ITS2); 2) evaluate in vitro Trichoderma spp. strains and chemical fungicides; and 3) evaluate under rainfed field conditions, the strains that obtained the best results in vitro, combined with fungicides during two crop cycles. Number of commercial and non-commercial fruits at harvest, and seed yield (kg ha-1) were registered. Morphological, pathogenic and molecular characterization identified Sclerotium rolfsii as the causal agent of rot in pipiana pumpkin fruits. Now, in vitro conditions, the highest inhibition of S. rolfsii were obtained by Trichoderma virens strain G-41 (70.72%), T. asperellum strain CSAEGro-1 (69%), and the fungicides metalaxyl (100%), pyraclostrobin (100%), quintozene (100%), cyprodinil + fludioxonil (100%), and prochloraz (100%). Thiophanate-methyl only delayed growth (4.17%). In field conditions, during the spring-summer 2015 cycle, T. asperellum strain CSAEGro-1 + metalaxyl, and T. asperellum + cyprodinil + fludioxonil, favored the highest number of fruits and seed yield in the crop.