Estimation of Saffron Yield using Reconnaissance Drought Index (Case study: South Khorasan Province)

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Dowlatabadi Sepideh; KHASHEI SIUKI ABBAS

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Journal: JOURNAL OF SAFFRON RESEARCH Year:2019 | Volume:7 | Issue:1 Page(s): 161-176

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Title

Estimation of Saffron Yield using Reconnaissance Drought Index (Case study: South Khorasan Province)

Author(s)

Dowlatabadi Sepideh | KHASHEI SIUKI ABBAS | Issue Writer Certificate

Keywords

DroughtQ3

Saffron yieldQ1

RDIQ1

South Khorasan provinceQ2

RegressionQ2

Vegetative phaseQ2

Abstract

Drought is a natural disaster and repeatable that influencing all climates, but the frequency of its occurrence is more in arid and semi-arid regions such as Iran. Due to water scarcity and the non-structural damages caused by Drought, a system of continuous surveillance on the phenomenon, Drought monitoring, is inevitable. Drought indices are used for monitoring and decreasing the effects of Drought. Among the indicators can be mention to Reconnaissance Drought Index (RDI). Therefore, due to dry weather conditions in South Khorasan province and its undeniable role in the production of saffron, the relationship between Saffron yield and RDI was studied in four prone sites for production and cultivation of saffron. In this regard, RDI of three months in the period 1989-2014 (25 years) calculated in synoptic stations of Birjand, Qaen, Ferdows and Nehbandan and then comparing with the yield, Regression equation between Drought index of each month and yield was determined. Regression analysis and the getting results, in addition to confirming the existence of the relationship between the RDI of Saffron yield confirmed this point that the Drought index of February, March and April months in Birjand and Qaen; February in Ferdows and months of January, February, March in Nehbandan were effective on Saffron yield. The extreme Drought occurred in Birjand and Qaen in years 2000-2001, 25 years under study, and in Ferdows and Nehbandan in the years 1999-2000, so that moderate Drought (normal) has the most continuity in all the studied stations and its occurrence is Imminent each three years once.

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APA: Copy

Dowlatabadi, Sepideh, & KHASHEI SIUKI, ABBAS. (2019). Estimation of Saffron Yield using Reconnaissance Drought Index (Case study: South Khorasan Province). JOURNAL OF SAFFRON RESEARCH, 7(1 ), 161-176. SID. https://sid.ir/paper/240455/en

Vancouver: Copy

Dowlatabadi Sepideh, KHASHEI SIUKI ABBAS. Estimation of Saffron Yield using Reconnaissance Drought Index (Case study: South Khorasan Province). JOURNAL OF SAFFRON RESEARCH[Internet]. 2019;7(1 ):161-176. Available from: https://sid.ir/paper/240455/en

IEEE: Copy

Sepideh Dowlatabadi, and ABBAS KHASHEI SIUKI, “Estimation of Saffron Yield using Reconnaissance Drought Index (Case study: South Khorasan Province),” JOURNAL OF SAFFRON RESEARCH, vol. 7, no. 1 , pp. 161–176, 2019, [Online]. Available: https://sid.ir/paper/240455/en

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