Browsing by Author "Katsoulas, N."
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Air temperature regime in a forced ventilated greenhouse with rose crop
(2005)The use of forced ventilation for greenhouse cooling and air humidity regulation purposes has been expanded around Mediterranean area. The aim of the present study was the experimental investigation of the variables, as ... -
Calcium, magnesium and potassium concentrations prediction in a recirculated nutrient solution of a greenhouse soilless rose crop
(2006)The effects of i) biophysical processes such as crop water uptake, and elements absorption and ii) chemical processes such as fertilizers dissolution and pH changes, on Ca2+, Mg2+ and K+ concentration in a recirculated ... -
Case studies of a modified biological simulator (TOMGRO) according to short cropping period
(2012)The aim of this work was to perform a sensitivity analysis of a modified biological simulator (TOMGRO) in tomato crop during winter period. The modified biological simulator (TOMGRO) that used for case studies of the ... -
Characterization and analysis of the effects of greenhouse climate control equipment on greenhouse microclimate and crop response
(2011)An overview of the recent scientific and technical advances on issues concerning the greenhouse microclimate, control and management in Mediterranean regions is presented and discussed. Special emphasis is given on the ... -
Computational fluid dynamics applications to improve crop production systems
(2013)Computational fluid dynamics (CFD), numerical analysis and simulation tools of fluid flow processes have emerged from the development stage and become nowadays a robust design tool. It is widely used to study various ... -
Crop-climate coupling in greenhouses. characterization and analysis
(2005)The present work analyses the degree of coupling between a greenhouse rose crop and the internal climate as a function of crop characteristics (leaf area index, LAI) and greenhouse climate functions (natural and forced ... -
Data based modeling approach for greenhouse air temperature and relative humidity
(2012)Greenhouse air temperature and relative humidity are two important variables that can be influenced and controlled by many parameters. The present research refers to the prediction of these two variables in a greenhouse ... -
Data-Based approach to model the dynamic behaviour of greenhouse temperature
(2011)Model-based greenhouse climate control combined with use of reliable sensors can achieve ideal balance of good greenhouse climate and energy saving; however, it requires development of robust models describing both the ... -
Development and evaluation of a DSS for drainage management in semi-closed hydroponic systems
(2014)The recycling of greenhouse effluents in soilless cultivation systems is environment-friendly, since the waste of water and the disposal of nutrients to the environment is drastically reduced or even eliminated. However, ... -
Development of a bio-physical simulator for Mediterranean greenhouses
(2011)The aim of this work was the development and validation of a biophysical model (BioSiGreT) by coupling a crop growth model and a greenhouse climate model. The crop growth model is a modification of TOMGRO to simulate ... -
Development of a simple growth model for light control in tomato seedling production
(2009)Models are necessary for application of automatic control on any process in greenhouses. Despite the existence of several tomato crop growth models, no models are available for tomato seedlings. In the present paper, a ... -
Differences in required structural efficiency of standard commercial steel greenhouses among EU countries: A hellenic experience
(2012)Since the climate and seismic conditions vary significantly among European countries (and sometimes even in different areas of the same country) the European Standard for the design and construction of greenhouses for ... -
Dispersion of pesticides from a naturally ventilated greenhouse: A CFD approach
(2006)A methodology of application of a numerical technique in order to simulate the dispersion of pesticides from greenhouses is presented. The proposed simulation approach is based on preliminary calculations that concern the ... -
Effect of grafting on eggplant leaf gas exchanges under mediterranean greenhouse conditions
(2011)Grafting is an easier and faster approach than plant breeding to take advantage of both existing resistant plants, especially wild cultivars, and high-bred cultivars. The aim of this study was to investigate the changes ... -
Effect of irrigation frequency on rose flower production and quality
(2006)A better understanding of the effects of irrigation frequency on flower production and quality of rose plants can help to propose optimal irrigation scheduling. For this purpose, experiments were conducted on a soilless ... -
Effect of Irrigation Scheduling on Gerbera Flower Yield and Quality
(2010)Better understanding of the effects of irrigation frequency and dose on flower production of gerbera plants (Gerbera jamesonii) can lead to optimal water management and crop yield. Measurements of greenhouse microclimate ... -
Effect of misting on transpiration and conductances of a greenhouse rose canopy
(2001)The influence of greenhouse humidity control on the transpiration rate (lambdaE(c)). sensible heat flux (H-c) and bulk stomatal conductance (g(c)) of a soilless rose canopy (Rosa hybrida. cv. First Red) was studied in a ... -
Effect of shading on greenhouse energy balance and crop transpiration
(2012)The purpose of this study was to investigate the effect of greenhouse shading and irrigation water salinity on greenhouse microclimate and energy balance and on crop transpiration and leaf photosynthesis. Experiments were ... -
Effect of two irrigation frequencies on rose flower production and quality
(2005)A better understanding of the effects of irrigation frequency on flower production and quality of rose plants can help to develop optimal irrigation systems. On this purpose experiments were conducted on a soilless rose ... -
Effect of two new cover materials on greenhouse energy consumption and cooling load
(2012)The aim of this work was to study the effects of a new polyethylene (PE) film with high reflectance and absorption in near infrared radiation (NIR-PE film) and of a PE film with low transmittance in infrared radiation IR ...