Water Relations of Citrus Trees under Partial Root Zone Drying along with Application of Shading

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EBADI HORMOZ; RAEINI MAHMOOD; GHOLAMI SEFIDKOOHI MOHAMMAD ALI

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Journal: Iranian Journal of Soil and Water Research Year:2017 | Volume:48 | Issue:4 Page(s): 865-878

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Title

Water Relations of Citrus Trees under Partial Root Zone Drying along with Application of Shading

Author(s)

EBADI HORMOZ | RAEINI MAHMOOD | GHOLAMI SEFIDKOOHI MOHAMMAD ALI | Issue Writer Certificate

Keywords

PRDQ1

ShadingQ1

Deficit IrrigationQ2

Abstract

Climate change and ever-increasing water consumption, along with water scarcity, reduces crop production. Thus, such efficient water management, as Deficit Irrigation as well as Shading could be the answer to some of these shortcomings. In Deficit Irrigation practice with Partial Root zone Drying (PRD), half of the root zone is irrigated and the other half is left dry. This experiment was conducted involving five treatments of (1) full irrigation, in which trees received 100 percent water content of soil field capacity (FC), 2) two PRD treatments, namely receiving 50 (PRD50) and 75% (PRD75) of FI, and 3) two PRD treatments, as above treated by Shading nets (SHPRD50 and SHPRD75). Tukey's test was employed to compare the treatment’ s means of stomatal conductance (gs), leaf relative water content (rwc), stem water potential (Ψ st), and leaf temperature (Tl). Moreover, Regression analysis was carried out among the above factors and leaf vs air vapor pressure difference. The results show that gs and rwc were higher in FI, PRD75 and SHPRD75 relative to the stressed treatments of PRD50 and SHPRD50. The same trend was registered for Ψ st, the lowest values being achieved by treatments receiving 50% FI. Leaf temperatures in some measurement intervals were significantly higher in stressed treatments of PRD50 and SHPRD50. Water deficiency significantly reduced yield in stressed treatments of PRD50, while in reverse, it increased fruit soluble solids in PRD50 and PRD75. Shading on PRD treatments increased fruit size and yield, although this improvement was significant only for fruit diameter in SHPRD75 in comparison with PRD50.

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APA: Copy

EBADI, HORMOZ, RAEINI, MAHMOOD, & GHOLAMI SEFIDKOOHI, MOHAMMAD ALI. (2017). Water Relations of Citrus Trees under Partial Root Zone Drying along with Application of Shading. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 48(4 ), 865-878. SID. https://sid.ir/paper/225715/en

Vancouver: Copy

EBADI HORMOZ, RAEINI MAHMOOD, GHOLAMI SEFIDKOOHI MOHAMMAD ALI. Water Relations of Citrus Trees under Partial Root Zone Drying along with Application of Shading. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH[Internet]. 2017;48(4 ):865-878. Available from: https://sid.ir/paper/225715/en

IEEE: Copy

HORMOZ EBADI, MAHMOOD RAEINI, and MOHAMMAD ALI GHOLAMI SEFIDKOOHI, “Water Relations of Citrus Trees under Partial Root Zone Drying along with Application of Shading,” IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, vol. 48, no. 4 , pp. 865–878, 2017, [Online]. Available: https://sid.ir/paper/225715/en

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