Consulta: creatorFacets:"Gillespie,Terry James"
Registros recuperados: 2
Data/hora: 01/06/2024 11:57:25

Performance of cylindrical leaf wetness duration sensors in a tropical climate condition
Provedor de dados: 63
Autores: Santos,Eduardo Alvarez; Sentelhas,Paulo Cesar; Gillespie,Terry James; Lulu,Jorge.
Leaf wetness duration (LWD) measurements are required for disease warning in several agricultural systems, since it is an important variable for the diagnose of plant disease epidemiology. The cylindrical sensor is an inexpensive and simple electronic LWD sensor initially designed to measure this variable for onions, however some studies show that it may be helpful for standard measurements in weather stations and also for different crops. Therefore, the objective of this study was to assess their performance under tropical climate conditions, in Brazil, having as standard measurements those obtained by flat plate sensors, which have presented very good performance when compared with visual observations. Before field assessments, all LWD sensors used in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Deployment angle; Electronic sensors; Dew; Rain; Disease-warning systems.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000700003

Agrometeorology and plant disease management: a happy marriage
Provedor de dados: 63
Autores: Gillespie,Terry James; Sentelhas,Paulo Cesar.
Many plant disease outbreaks are triggered by suitably warm temperatures during periods of leaf wetness. Measurements or estimations of leaf wetness duration provided by Agrometeorologists have allowed Plant Pathologists to devise weather timed spray schemes which often reduce the number of sprays required to control plant diseases, thus lowering costs and benefitting the environment. In the near future, tools such as numerical weather models with small grid spacings, and improved weather radar, are expected to reduce the need for tight networks of surface observations. The weather models will also provide growers with forecast warnings of potential upcoming disease outbreaks, which will further enhance the contribution of agrometeorology to plant disease...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf wetness duration; Temperature; Disease warning systems.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000700012