Greenhouses

Ehud Dayan, Ph.D.
Tel.: 972 (8) 998-2114
Fax: 972 (8) 998-5201
Mobile: 056 220 179
Home: 972 (8) 998-2954
ehudayan@agri.gov.il

Greenhouses
Besor ARO
D.N. Negev 4 85400
Israel

Areas of Expertise

Agricultural meteorology
Climate control in greenhouses
Agrotechnology in greenhouses
Growth models

Current Projects

Cooling of greenhouses.

Improving climate control and CO2 enrichment regime by using models within the greenhouse control algorithm.

Simplifying of sensing and analyzing systems for diagnosing physiological stress, adjustment of irrigation and climate control treatments of greenhouse and field crops.

Improving the greenhouse micro climate by development of recycling methods and enhanced efficient use of water, local shading and improving of light interception.

Models for regulating of growth of greenhouse plants.

Active Grants

1995:Modeling optimization of greenhouse environment.

1995: Shading of greenhouses for climate improving.

1997: Cooling of air and leaves of protected crops during the summer for product quality improvement.

1997: New type of algorithm for greenhouses

1998: Improvement quality of rose flowers during the summer by control of greenhouse temperature and relative humidity.

1998: Leaf temperature and water uptake sensors for climate control in greenhouse roses.

1999: Enrichment of greenhouse roses with CO₂.

Selected publications

1. Dayan, E., Enoch, Z.H., Fuchs, M., and Zipori I. [1986]. Suitability of greenhouse building types and roof cover materials for growth of export tomatoes in the Besor region of Israel. I.Effect on climatic condition. Biotronics 15:61-70 II. Effect on fresh and dry matter production. Biotronics 15:71-79.
2. Dayan, E., and Enoch, Z.H. [1986]. A comparison of two techniques, for the enrichment of greenhouses with CO2, in region with high levels of solar radiation. Biotronics 15:9-14.
3. Dayan, E., Zipori, I., Samuel, D., and Chausho, Anat. [1991].Enrichment of melons, grown in walk-through tunnels, with CO2. Hassade 72 (2): 187-195, [In Hebrew, English summary].
4. Dayan, E., Zipori, I., Samuel, D., Alekperov C. and Chausho, Anat.[1991]. Development of nets for protection of tomatoes from white fly. Hassade 72 (3): 335-338, [In Hebrew, English summary].
5. Dayan, E., [1991] Growing of Vegetables out of the season. In Arnon, I., (ed.) The Enc. of Agric.: Vegetables Crops in Israel. Vol. 6:433-471 (in Hebrew).
   
6. Dayan, E., Van Keulen, H., Jones, J.W., and Challa, H., [1993]. Development, calibration and validation of a greenhouse tomato growth model. I. Description of the model. Agric. Syst. 43: 145-163. II. Field calibration and validation.Agric. Syst. 43:165-183.
7. Fuchs, M., and Dayan, E., [1993]. Transpiration and foliage temperature in greenhouse. In ISHS, International Workshop on Cooling Systems for greenhouses. Agritech. Tel-Aviv, 2-5 May 1993.
8. Dayan, E., [1996]. Greenhouse Climate Control. Students guide, for course 71604. Heb. Univ. Special Publication. pp.126. [In Hebrew].
9. Fuchs M., Dayan, E., Shmuel D., Zipori Y., [1997]: Effects of ventilation on the energy balance of a green house with bare soil ventilation on the energy balance of a green house with bare soil. Agricult. and Forest Meteor:86(1997):273-282.
10. Fuchs, M., & Dayan, E., [1997]: Cooling in greenhouses. Int. Water & Irrig. Review: 17(4): 21-23.
11. Gijzen H., Heuvelink E., Challa H., Dayan, E., Marcelis L.F.M., Cohen S., Fuchs M., [1998]:"Hortisim": a model for Greenhouse Crops and greenhouse climate. In: The proceeding of the second international symposium on models for plant Growth, Environmental Control and Farm Management in Protected Cultivation. (ed. Marcelis L.F.M.) Wageningen, The Netherlands.25-28 Aug 1997.Acta. Hort. (456): 441-450.
12. Dayan, E., Alkaprov. C., and Samuel, D. [1995] Characterization of nets and plastic film for uses as covering material for greenhouses. Agr. Res. Org. Special publication for [PERI 90024]. [In Hebrew].
13. Fuchs, M., Segal, I. Dayan, E., Jordan, K., [1995]. Improving greenhouse microclimate control with the help of plant temperature measurements. BARD Project No IS-1816-90R. Final report. 62 pp.
14. Dayan, E., [1996]: Night Temp effects on sweet Pepper fruits yields and qualities.In "The Southern R&D Annual report". (Matan E., (ed.)) 1994-5:66-78.
15. Aloni B., Karni L., Gamliel, B., Thari, E., Fuchs M., Dayan, E., [1997]: Night Temp adjustment following daily radiation for higher sweet Pepper fruits yields and qualities.In "The Southern R&D Annual report". (Matan E., (ed.)) 1995-6:97-107.
16. Dayan, E., [1998]: Improvement quality of summer rose flowers by greenhouse climate control. In "The Southern R&D Annual report". (Matan E., (ed.)) 1996-7:17-37.