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Effect of nocturnal ventilation on the occurrence of Botrytis cinerea in Medite...
Baptista, F.J.; Bailey, B.J.; Meneses, J.F.Botrytis cinerea is the causal agent of grey mould disease which is one of the most important diseases affecting tomato crops in unheated greenhouses. Nocturnal ventilation is a technique that can be used to reduce relative humidity inside unheated greenhouses. The main objectives of this research were to investigate the effect of ventilation management on the environmental conditions and on the disease severit...
Development of a Warning System for Controlling Botrytis cinerea in Unheated To...
Baptista, Fátima J.; Bailey, B.J.; Meneses, J.F.Botrytis cinerea is the causal agent of grey mould disease which is one of the most important diseases affecting tomato crops in unheated greenhouses. As a prophylactic measure growers usually apply large quantities of chemical fungicides for its control. Nocturnal ventilation is an effective way to reduce high relative humidity inside greenhouses and can be a useful tool to minimise chemical use in unheated gr...
Comparion of humidity conditions in unheated tomato greenhouses with different ...
Baptista, Fátima J.; Bailey, B.J.; Meneses, J.F.The objective of the research was to investigate the influence of nocturnal ventilation on the humidity conditions in unheated tomato greenhouses and the consequences for Botrytis cinerea control. Experiments were carried out at the Instituto Superior de Agronomia in Lisbon in two identical adjacent double-span greenhouses covered with three layer co-extruded film. The climate was controlled by natural ventilat...
Nocturnal Ventilation For Controling Greenhouse Humidity and Botrytis Cinerea S...
Baptista, F.J.; Bailey, B.J.; Meneses, J.F.Grey mould disease is one of the most important diseases affecting crops grown in unheated greenhouses, where ventilation is the main technique used to control inside environmental conditions. The main goal of this investigation was to study the influence of nocturnal ventilation on the humidity conditions in unheated tomato greenhouses and the consequences for Botrytis cinerea control. Experimental work was re...
Measuring and Modelling Transpiration Versus Evapotranspiration of a Tomato Cr...
Baptista, Fátima J.; Bailey, B.J.; Meneses, J.F.The main sources of water vapour in a greenhouse are plant transpiration and the evaporation of water from soil (evapotranspiration). These processes are influ- enced by environmental factors such as solar radiation and water vapour pressure deficit, as shown by the Penman-Monteith equation. Most previous studies have been conducted in Northern countries and with soiless crops, which means th...
Comparison of the climatic conditions and tomato crop productivity in Mediterra...
Baptista, F.J.; Abreu, P.E; Meneses, J.F.; Bailey, B.J.This study was based on experiments with a tomato crop, carried out in two Mediterranean unheated greenhouses, located at the Instituto Superior of Agronomia, Lisbon. The main objective was to compare the behaviour of internal air parameters such as air temperature and relative humidity and the likelihood of condensation on the greenhouse cover in two greenhouses with different management of natural ventilation...
Natural ventilation of greenhouses. Comparison of measured and predicted ventil...
Baptista, F.J.; Bailey, B.J.; Meneses, J.F.Ventilation is one of the most important tools for controlling the greenhouse climate. The air exchange between inside and outside of a greenhouse influences the environmental conditions such as temperature, humidity and carbon dioxide concentration of the enclosure which affect the development and production of the crop. In winter, ventilation must remove the excess water vapour while during summer cooling is ...
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