Effect of Mulch and Irrigation Interval on Morph-physiological Characteristics of Olive (Olea europaea cv. Sevillana) under Field Condition

Document Type : Research Paper

Authors

1 Assistant Professor, Agronomy-Horticultural Sciences Research Department, Kermanshah Agricultural and Natural Resources Research and Education Center (AREEO), Kermanshah, Iran

2 Associate Professor , Agronomy-Horticultural Sciences Research Department, Kermanshah Agricultural and Natural Resources Research and Education Center (AREEO), Kermanshah, Iran

Abstract

This experiment was conducted to study the effect of irrigation interval and mulch on morph-physiological characteristics of 11-years old olive trees, Sevillana cultivar. A factorial experiment was carried out in Dallaho Olive Research Station in Sarpole-Zahab. Field experiment based on randomized complete block design with three replications and two factors (irrigation interval and mulch) was conducted in 2015. Irrigation treatments period for experiment were 3, 6 and 10 days interval and mulch treatments for experiment were control (no mulch), polyethylene and wheat straw. Some vegetative growth traits including current-season shoot growth and diameter and certain physiological characteristics consisting of leaf relative water content (RWC), ionic leakage, total chlorophyll, proline content, total soluble sugars, phenol and malondialdehyde were measured at the end of growth season. Results showed that mulch and interval of irrigation treatments caused significant differences in morph-physiological traits so that mulch and 3 days interval irrigation treatments increased current-season shoot growth and diameter of olive trees. Leaf RWC and total chlorophyll was reduced under drought stress. The usage of mulch resulted in higher leaf RWC and total chlorophyll compared to the drought stress conditions. Application of mulch improved growth characteristics of olive under drought stress and helped to save water in olive orchards.

Keywords


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