THE EFFECT OF IRRIGATION WATER QUALITY , ORGANIC MATERIAL AND PHOSPHORUS ON SOME SOIL CHEMICAL CHARACTERISTICS AND YIELD OF CULIFLOWER

Al-Ziadi.H.S.S,; Y.A.M.Aloosy,

	THE EFFECT OF IRRIGATION WATER QUALITY , ORGANIC MATERIAL AND PHOSPHORUS ON SOME SOIL CHEMICAL CHARACTERISTICS AND YIELD OF CULIFLOWER
The Iraqi Journal of Agricultural Science
Article 1, Volume 42, Issue 0, 2011, Pages 42-45
Authors
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Abstract
A field experiment was conducted in Al – Raid Experimental Station, Ministry of Water Resources,20Km west of Baghdad in silt clay loam texture soil classified to sub under great group Typic- Torriflovent. Randomly complete Block Design (RCBD) was used with three replicates away of split split experiment unit to study the effect of irrigation water quality, organic matter and phosphate fertilizer and their interaction on some of soil characteristics and Cauliflower yield .The study includes three factors:-The main plots was irrigation water quality which includes three levels of saline water (1.4 , 3.0 and 4.5 dS . m-1) ,sub plots tow levels of organic fertilizer (0 and 20 Mg.ha-1) and sub sub plots three levels of phosphate fertilizer (DAP 21%P) (0 ,45 , 90 Kg P.ha-1) . Cauliflower transplanted (megha) Prassica oleracea. at 20-9-2009 . All treatments reseived adequate amount of N and K at the rates of 250 Kg N.ha-1 and 80 Kg K.ha-1 form of urea (46%N) and potassium sulfate (41.5%K) respectively. All treatments were irrigated to field capacity when 50% of available moisture was lost. Soil samples were taken at flowering stage for analysis of some soil chemical characteristics ECe , pH , OM and SAR , yield of flower disk were also determined.The results showed that increased irrigation water salinity caused significant increase in some of Soil chemical characteristics ECe , SAR and OM while it caused decrease in soil pH values . It caused a significant decrease in yield of flower disk . Addition of organic sheep manurs to soil caused significant reduce in Ece , SAR and Soil pH , and increase in yield of flower disk. Increasing rates of P fertilizer caused significant increase in yield of flower disk by 45% and 73% for 45 and 90 Kg P.ha-1 respectively compared with 0Kg P.ha-1, while it has no effect on soil chemical characteristics tested. The interaction effect of irrigation water quality, organic matter and phosphate fertilizer caused a significant icreased in on some of soil characteristics and yield of flower disk.

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