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The effect of screenhouse height on air temperature
Year:
2014
Source of publication :
Acta Horticulturae
Authors :
Antler, Aharon
;
.
Garcia-Teruel, Monica
;
.
Levi, Aharon
;
.
Tanny, Josef
;
.
Teitel, Meir
;
.
Volume :
1037
Co-Authors:
Teitel, M., Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet-Dagan 50250, Israel
Garcia-Teruel, M., Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet-Dagan 50250, Israel
Alon, H., Besor Experimental Station, Mobile Post 4, 85400, Israel
Gantz, S., Shaham, Ministry of Agriculture, Rishon-Lezion. P.O. Box 30, Bet- Dagan, 50250, Israel
Tanny, J., Institute of Soil, Water and Environmental Sciences, Volcani Center, P.O. Box 6, Bet-Dagan 50250, Israel
Esquira, I., Israeli Plant Board, P.O. Box 235, Yehud 56000, Israel
Sofer, M., Besor Experimental Station, Mobile Post 4, 85400, Israel
Levi, A., Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet-Dagan 50250, Israel
Schwartz, A., Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Antler, A., Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet-Dagan 50250, Israel
Facilitators :
From page:
517
To page:
524
(
Total pages:
8
)
Abstract:
The use of screenhouses in protected cultivation is nowadays a common practice in many countries. When fine mesh screens are used in the screenhouse construction, the resistance of the screens to airflow is high and ventilation rate is strongly reduced in comparison to the open field. Thus, growers tend to move to higher screenhouses since they assume that in such structures accumulation of warm and humid air near the plants is diminished. The goal of this research was to investigate, in insect-proof screenhouses, the effect of screenhouse height on air temperature. Experiments were conducted in two flat top screenhouses each of an area of 745 m2; one with a roof height of 4 m (LSH) and the other with a roof height of 6 m (HSH) with 16 m of separation between them. The houses were covered with a '50-mesh' screen which is commonly used with tomato cultivation in Israel. The daily courses of air temperature were very similar in the two houses. The average air temperature in the HSH was nearly at all times higher than in the LSH. The largest differences in temperature between the houses, of about 1°C, were observed during day; slightly lower differences were observed during night. The most significant difference between the two houses was related to the vertical gradients of temperature. The results show that the microclimate in the vertical direction appears to be more homogenous in the HSH than in the LSH.
Note:
Related Files :
Insect-proof screen
microclimate
Temperature distribution
Show More
Related Content
More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
31353
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:01
Scientific Publication
The effect of screenhouse height on air temperature
1037
Teitel, M., Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet-Dagan 50250, Israel
Garcia-Teruel, M., Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet-Dagan 50250, Israel
Alon, H., Besor Experimental Station, Mobile Post 4, 85400, Israel
Gantz, S., Shaham, Ministry of Agriculture, Rishon-Lezion. P.O. Box 30, Bet- Dagan, 50250, Israel
Tanny, J., Institute of Soil, Water and Environmental Sciences, Volcani Center, P.O. Box 6, Bet-Dagan 50250, Israel
Esquira, I., Israeli Plant Board, P.O. Box 235, Yehud 56000, Israel
Sofer, M., Besor Experimental Station, Mobile Post 4, 85400, Israel
Levi, A., Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet-Dagan 50250, Israel
Schwartz, A., Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Antler, A., Institute of Agricultural Engineering, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet-Dagan 50250, Israel
The effect of screenhouse height on air temperature
The use of screenhouses in protected cultivation is nowadays a common practice in many countries. When fine mesh screens are used in the screenhouse construction, the resistance of the screens to airflow is high and ventilation rate is strongly reduced in comparison to the open field. Thus, growers tend to move to higher screenhouses since they assume that in such structures accumulation of warm and humid air near the plants is diminished. The goal of this research was to investigate, in insect-proof screenhouses, the effect of screenhouse height on air temperature. Experiments were conducted in two flat top screenhouses each of an area of 745 m2; one with a roof height of 4 m (LSH) and the other with a roof height of 6 m (HSH) with 16 m of separation between them. The houses were covered with a '50-mesh' screen which is commonly used with tomato cultivation in Israel. The daily courses of air temperature were very similar in the two houses. The average air temperature in the HSH was nearly at all times higher than in the LSH. The largest differences in temperature between the houses, of about 1°C, were observed during day; slightly lower differences were observed during night. The most significant difference between the two houses was related to the vertical gradients of temperature. The results show that the microclimate in the vertical direction appears to be more homogenous in the HSH than in the LSH.
Scientific Publication
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