jzs-10658

Effect of Fertilizer Types and Plant Densities on Oil Components of Milk Thistle (Silybum marianum L.) Under Rainfed and Irrigated Conditions

Rozhgar Mustafa Ahmed1, Ali Abdulrahman Askari2 , Shirwan Omer Baban3

1Department of Field crops, College of Agricultural Engineering Sciences, University of Sulaimani, Kurdistan Region, Iraq  

2 Crop Science Department , College of Agricultural Sciences ,University of Sulaimani  , Kurdistan Region, Iraq    

3 Department of  Chemistry, College of Education, Salahaddin University,  Kurdistan Region, Iraq

Original: 11/11/2017, Revised: 07/01/2018, Accepted: 06/02/2018, Published online:

DOI Link: https://doi.org/10.17656/jzs.10658

Abstract

The present study was conducted at Bazian location during two winter seasons of 2010- 2011 and 2011- 2012 A factorial experiment was conducted using Completely Randomized Block Design (CRBD) with three replications. The study included two different irrigation; Rainfed and Irrigated, combined with three fertilization applications; No fertilization Chemical fertilization and Organic fertilization and two different plant densities; 8and 16 plant m-2. The most important results of the average of both seasons can be summarized as follows:-

Seed samples were analyzed quantitatively by HPLC for their content of unsaturated fatty acids; α-Linolenic, Linoleic, Oleic and Gadoleic acid. Data showed that effect of irrigation treatment was significant in the amount of Linoleic and Oleic acids, while Gadoleic showed significant differences due to no fertilizer treatment. α-Linolenic respond significantly to the interaction between chemical fertilizer and 8 plant m-2. 

  Key Words: Medicinal Plant, Milk thistle, Fertilization, Irrigation, Plant density, Unsaturated fatty acids.

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