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Long term production of rose flowers in the greenhouse under different cooling methods: I. Energy balance, flower yield and quality
Year:
2005
Authors :
Dayan, Ehud
;
.
Plaut, Zvi
;
.
Presnov, Eugene V.
;
.
Volume :
70
Co-Authors:
Dayan, E., Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Israel, Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Negev 2, 85280, Israel
Plaut, Z., Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Israel, Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Negev 2, 85280, Israel
Presnov, E., Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Israel, Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Negev 2, 85280, Israel
Grava, A., Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Israel, Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Negev 2, 85280, Israel
Facilitators :
From page:
257
To page:
264
(
Total pages:
8
)
Abstract:
During the summer, flowers produced in Mediterranean greenhouses suffer reduced quality, with short, thin stems and small buds. As crop ages, quality declines in winter as well. Farmers try to solve these problems with cooling methods such as shading or wet pads. Such treatments have harmful side effects and they are often ineffective. The present study tested long term effects of cooling methods on yield and quantity. It was found that during the first half of the summer common cooling methods had no beneficial effects. During the second half of the summer, especially with aged crops, these methods increased crop yields but not their quality. It has been suggested that the quality of flowers declines, especially in mid-summer, as result of deficient carbohydrate supply for each stem. The deficiency is produced by the big population of young flower shoots, which emerge at this time of the year, especially on aged crop. The effect of cooling treatments is weak when the young crop has a fresh transpiring canopy. When crops become older, the cooling treatments help the plants to produce longer stems. In summer, and especially in a system of old crops, a high percentage of the flower stems fail to reach marketable length, and then cooling methods increase the number of marketable flowers. © Verlag Eugen Ulmer KG.
Note:
Related Files :
Climate control
COOLING
Crop age
Cutting regimes
Flower quality
Flower quantity
greenhouse
high temperature
Rosa
Show More
Related Content
More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
19590
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:30
Scientific Publication
Long term production of rose flowers in the greenhouse under different cooling methods: I. Energy balance, flower yield and quality
70
Dayan, E., Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Israel, Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Negev 2, 85280, Israel
Plaut, Z., Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Israel, Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Negev 2, 85280, Israel
Presnov, E., Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Israel, Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Negev 2, 85280, Israel
Grava, A., Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Israel, Institute of Soils, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Gilat, Negev 2, 85280, Israel
Long term production of rose flowers in the greenhouse under different cooling methods: I. Energy balance, flower yield and quality
During the summer, flowers produced in Mediterranean greenhouses suffer reduced quality, with short, thin stems and small buds. As crop ages, quality declines in winter as well. Farmers try to solve these problems with cooling methods such as shading or wet pads. Such treatments have harmful side effects and they are often ineffective. The present study tested long term effects of cooling methods on yield and quantity. It was found that during the first half of the summer common cooling methods had no beneficial effects. During the second half of the summer, especially with aged crops, these methods increased crop yields but not their quality. It has been suggested that the quality of flowers declines, especially in mid-summer, as result of deficient carbohydrate supply for each stem. The deficiency is produced by the big population of young flower shoots, which emerge at this time of the year, especially on aged crop. The effect of cooling treatments is weak when the young crop has a fresh transpiring canopy. When crops become older, the cooling treatments help the plants to produce longer stems. In summer, and especially in a system of old crops, a high percentage of the flower stems fail to reach marketable length, and then cooling methods increase the number of marketable flowers. © Verlag Eugen Ulmer KG.
Scientific Publication
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