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אסיף מאגר המחקר החקלאי
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Cooling of roses in greenhouses
Year:
2000
Source of publication :
Acta Horticulturae
Authors :
Dayan, Ehud
;
.
Fuchs, Marcel
;
.
Grava, Avraham
;
.
Plaut, Zvi
;
.
Presnov, Eugene V.
;
.
Volume :
534
Co-Authors:
Dayan, E., A.R.O., Besor Exp. Stat., Mobile Post Negev 4, 85400, Israel
Fuchs, M., A.R.O., Soil and Water Inst., P.O. Box 6, Bet Dagan, 50250, Israel
Plaut, Z., Southern R and D, Besor Exp. Stat., Mobile Post Negev 4, 85400, Israel
Presnov, E., A.R.O., Besor Exp. Stat., Mobile Post Negev 4, 85400, Israel
Grava, A., A.R.O., Soil and Water Inst., P.O. Box 6, Bet Dagan, 50250, Israel
Matan, E., Southern R and D, Besor Exp. Stat., Mobile Post Negev 4, 85400, Israel
Solphoy, A., Southern R and D, Besor Exp. Stat., Mobile Post Negev 4, 85400, Israel
Mugira, U., Extension Service, Ministry of Agriculture, P.O. Box 6, Bet Dagan, 50250, Israel
Pines, N., Extension Service, Ministry of Agriculture, P.O. Box 6, Bet Dagan, 50250, Israel
Facilitators :
From page:
351
To page:
360
(
Total pages:
10
)
Abstract:
Rose flowers produced in greenhouses during the Israeli summer are of poor quality, due presumably to the high temperatures and low air humidity obtained with natural ventilation (NV). Several variants of commercial cooling methods were tested to reduce the duration of high temperature exposure in greenhouses. The treatments included were: NV (reference), with and without shading, and forced ventilation with and without an evaporative pad. Modified concepts issued from a steady state energy balance model set a frame for analyzing the course of action of the treatments. The cooling treatments hardly reduced average temperatures of air, plant, or flower. Due to morphology, the plant absorbed most of the radiant energy entering the greenhouse, and most of it was removed as latent heat. In comparison to NV, the treatments produced limited additional cooling because each of them reduced the transpiration rates.
Note:
Related Files :
COOLING
greenhouse
Natural ventilation
Rosa
Roses
shading
Tillandsia
Wet pad
Show More
Related Content
More details
DOI :
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
Conference paper
;
.
Language:
English
Editors' remarks:
ID:
19549
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:30
Scientific Publication
Cooling of roses in greenhouses
534
Dayan, E., A.R.O., Besor Exp. Stat., Mobile Post Negev 4, 85400, Israel
Fuchs, M., A.R.O., Soil and Water Inst., P.O. Box 6, Bet Dagan, 50250, Israel
Plaut, Z., Southern R and D, Besor Exp. Stat., Mobile Post Negev 4, 85400, Israel
Presnov, E., A.R.O., Besor Exp. Stat., Mobile Post Negev 4, 85400, Israel
Grava, A., A.R.O., Soil and Water Inst., P.O. Box 6, Bet Dagan, 50250, Israel
Matan, E., Southern R and D, Besor Exp. Stat., Mobile Post Negev 4, 85400, Israel
Solphoy, A., Southern R and D, Besor Exp. Stat., Mobile Post Negev 4, 85400, Israel
Mugira, U., Extension Service, Ministry of Agriculture, P.O. Box 6, Bet Dagan, 50250, Israel
Pines, N., Extension Service, Ministry of Agriculture, P.O. Box 6, Bet Dagan, 50250, Israel
Cooling of roses in greenhouses
Rose flowers produced in greenhouses during the Israeli summer are of poor quality, due presumably to the high temperatures and low air humidity obtained with natural ventilation (NV). Several variants of commercial cooling methods were tested to reduce the duration of high temperature exposure in greenhouses. The treatments included were: NV (reference), with and without shading, and forced ventilation with and without an evaporative pad. Modified concepts issued from a steady state energy balance model set a frame for analyzing the course of action of the treatments. The cooling treatments hardly reduced average temperatures of air, plant, or flower. Due to morphology, the plant absorbed most of the radiant energy entering the greenhouse, and most of it was removed as latent heat. In comparison to NV, the treatments produced limited additional cooling because each of them reduced the transpiration rates.
Scientific Publication
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