Articles

TREE WATER STATUS INDICATOR OF SCION-ROOTSTOCK COMBINATIONS OF PEACH UNDER DEFICIT IRRIGATION IN WARM PRODUCTION AREA

Article number
1084_56
Pages
395 – 400
Language
English
Abstract
This work aims at testing the capacity of scion-rootstock combination and irrigation scheduling techniques to improve water management under situations of water scarcity.
A field experiment was carried out in northern Tunisia on two drip irrigated peach varieties ‘Early May Crest’ and ‘Royal Glory’ grafted on two root-stocks, GF677 and Cadaman.
Two deficit levels DI1 and DI2 were applied with water supply not exceeding 300 and 200 mm, respectively.
Water status was measured on the four scion-rootstock combinations under the applied watering conditions during three growing seasons.
Measurements concerned Predawn (ΨPD) and stem (Ψstem) water potentials.
Observed values of Ψstem have lower variability and allowed to detect differences among treatments and rootstocks.
Investigation of the relationship between ΨPD and Ψstem showed a linear relationship.
The slope of the linear relationship is different for the two rootstocks and is affected by warmer winter conditions.

Publication
Authors
M. Ghrab , M. Ben Mimoun, M.M. Masmoudi , N. Ben Mechlia
Keywords
Prunus persica, rootstock, variety, deficit irrigation, leaf and stem water potentials
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