Development of Irrigation Program using Leaf Water Potential in Royal Table Grape Variety in the Mediterranean Region
Abstract
This research was conducted over two consecutive
years (2009-2010) in the Eastern Mediterranean Region of Turkey on Royal table
grape variety in order to determine the optimal timing of irrigation for high
quality yield using mid-day leaf water potential values. In the study, six
different treatments based on irrigation treatments; full irrigation (FI), soil
water deficit in the 80 cm
within the seven-day intervals was replenished to the field capacity; deficit
irrigations, DI50; DI75; and Partial Root-zone Drying PRD50
and a control treatment (non irrigated), which received, respectively 50, 75,
and 50% of FI. Experimental design is randomized blocks with three
replications. In general, irrigation treatments had significant effect on yield
at 1% level. The differences can be attributed to varying weather and soil
water conditions occurred in the experimental years. Highest yield was obtained
from the full irrigation as 28.6 t ha-1, and the lowest yield was
obtained non-irrigated control treatment 12.5 t ha-1. Leaf water
potential (LWP) were measured throughout the growing season with a pressure
chamber. Highest yields of Royal table variety can be obtained when irrigated
at LWP value -1.17 MPa. The results revealed that leaf water potential can be
used for irrigation scheduling of grapes.
Keywords
References
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Details
Primary Language
English
Subjects
Agricultural Engineering
Journal Section
Conference Paper
Publication Date
December 31, 2018
Submission Date
July 19, 2018
Acceptance Date
November 25, 2018
Published in Issue
Year 2018