Comparison of Utah and Positive Utah models for determining of chilling and heat requirements of some olive cultivars

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

RAHEMI M.; Navid Pour N.; SEDAGHAT S.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Iran Agricultural Research Year:2019 | Volume:38 | Issue:1 Page(s): 23-34

Download Full-Text

Persian Verion

View:

680

Download:

172

Cites:

Information Journal Paper

Title

Comparison of Utah and Positive Utah models for determining of chilling and heat requirements of some olive cultivars

Author(s)

RAHEMI M. | Navid Pour N. | SEDAGHAT S. | Issue Writer Certificate

Keywords

Bud breakQ1

CuttingQ3

Flower budQ1

Growing Degree DaysQ1

Abstract

Determining of chilling and heat requirements of olive cultivars growing in Fars Province is important for the selection of cultivars that will exhibit satisfactory growth and development. The purposes of this study were determining the chilling and heat requirements of olive and comparison of Utah and Positive Utah Chill unit (PCU) models for determining the chilling requirements of olive cultivars. In this regard, chilling requirement of Flower buds of ‘ Fishomi’ , ‘ Dezful’ , ‘ Zard’ , ‘ Dehghan’ and ‘ Shiraz’ cultivars were determined. Cuttings of these cultivars were taken during autumn when the mean temperature fell below 12º C. Cuttings were kept at 5 º C for periods of 0, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700 and 1800 h. Results indicated that the chilling requirements of ‘ Fishomi’ , ‘ Dezful’ , ‘ Zard’ , ‘ Dehghan’ and ‘ Shiraz’ were 900, 1000, 900-1000, 1000-1100 and 900 h, respectively. Results also showed that the PCU unit model was more efficient than the Utah for estimating chilling requirements under subtropical field conditions. Heat requirements from the end of dormancy to full bloom stage of these five olive cultivars were estimated as 199. 2, 272. 1, 245. 2, 245. 2, 321 Growing Degree Days (GDDs), respectively. It was observed that ‘ Fishomi’ had the lowest chilling requirement and ‘ Dehghan’ obtained the highest one. Hence, ‘ Fishomi’ can be recommended for cultivation in subtropical regions.

Cites

No record.

References

No record.

Cite

APA: Copy

RAHEMI, M., Navid Pour, N., & SEDAGHAT, S.. (2019). Comparison of Utah and Positive Utah models for determining of chilling and heat requirements of some olive cultivars. IRAN AGRICULTURAL RESEARCH, 38(1 ), 23-34. SID. https://sid.ir/paper/363071/en

Vancouver: Copy

RAHEMI M., Navid Pour N., SEDAGHAT S.. Comparison of Utah and Positive Utah models for determining of chilling and heat requirements of some olive cultivars. IRAN AGRICULTURAL RESEARCH[Internet]. 2019;38(1 ):23-34. Available from: https://sid.ir/paper/363071/en

IEEE: Copy

M. RAHEMI, N. Navid Pour, and S. SEDAGHAT, “Comparison of Utah and Positive Utah models for determining of chilling and heat requirements of some olive cultivars,” IRAN AGRICULTURAL RESEARCH, vol. 38, no. 1 , pp. 23–34, 2019, [Online]. Available: https://sid.ir/paper/363071/en

Related Journal Papers