EFFECT  THE ALTERNATION OF SURFACE AND DRIP IRRIGATION METHODS AND IRRIGATION WATER SALANITY ON THE SOIL PROPERTIES AND PLANT GROWTH IN CLAY SOIL

A..D.Shabeb,; H. Dheab, A.; R. Nedewi, D.

	EFFECT THE ALTERNATION OF SURFACE AND DRIP IRRIGATION METHODS AND IRRIGATION WATER SALANITY ON THE SOIL PROPERTIES AND PLANT GROWTH IN CLAY SOIL
The Iraqi Journal of Agricultural Science
Article 1, Volume 42, Issue 0, 2011, Pages 55-74
Authors
; A. H. Dheab; D. R. Nedewi
Abstract
The study has been conducted in the field of Agricultural college university of Basrah,inKarmat- Ali during the spring season 2007 on clay texture soil in order to investigate the effect of alteration between drip and surface irrigation systems, Using saline water 7.0 – 8.5 dSm-1 and low saline water 2.5 – 3.0 dSm-1, under irrigation level of 100% EP and Leaching requirement of 20% , on soil properties.The experiment was designed by Randomized Complete block design (R.C.B.D) with three replication.The results of this study may summarized as follows: 1. Using saline water by alternation of drip and surface irrigation system in trio cycles starting by drip irrigation and ending by surface irrigation,use low saline water (Ds.Df.Sf – DsDf.Sf – Df.Ds.Sf) gave high efficiency in preventing salinity from using single method (Df- Sf) 2. Soil salinity increased horizontaly from the water drip sources and the largest value of electrical conduction was in the surface depths.

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