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Paper Information

Journal:   IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES   2002 , Volume 16 , Number 1; Page(s) 0 To 0.
 
Paper: 

EFFECT OF DIFFERENT IRRIGATION AMOUNTS ON PHYSIOLOGICAL AND ANATOMICAL RESPONSES OF OLIVE (OLEA EUROPAEA L. CV. ZARD)

 
 
Author(s):  ARJI I., ARZANI K., MIRLATIFI S.M.
 
* 
 
Abstract: 
Scarcity of water is one of the limiting factors for the expansion of agricultural production in Iran. Therefore, management of available irrigation water is very important in order to increase water use efficiency and to prevent loss of irrigation water. Olive (Olea europaea L.) is one of the drought resistance plants. Considering the adaptability of olive plants to areas faced with shortage of water, the cultivation of olive plants is encouraged by the fruit industry.
Five-month old rooted cuttings of olive plants cv. Zard transplanted in 5.4- liter polyethylene pots were subjected to different irrigation regimes during the growing season. Treatments were 20, 40, 60, 80 and 100% of potential evapotranspiration (ETp) of olive plants, which are referred to by I1, I2, I3, I4, and I5 respectively. The water use of five pots which were irrigated once in every three days were considered as olive cuttings ETp. The irrigation frequency of all pots was three days. Vegetative growth was reduced by increasing water stress during the growing season. In general, root, shoot and leaf fresh and dry weight, leaf number, leaf area, plant height, shoot number and shoot length were decreased as the intensity of water stress increased. The differences between treatments in various measured characters were significant except for shoot number with less than 10 cm length. Plants subjected to I4 and I5 treatments, did not show any significant differences for leaf number, leaf area, plant height, shoot number and shoot length. Plants in I1 and I2 treatments did not show any vegetative growth and also leaf abscission was occurred in these plants. Although, leaf abscission was did not occur in plants in I3, I4, and I5 treatments. Results indicate that plants subjected to I4 and I5 treatments had a better growth and performance than plants in the other treatments.
 
Keyword(s): OLIVE; CV. ZARD; IRRIGATION; EVAPOTRANSPIRATION; VEGETATIVE GROWTH.
 
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