Volume 18, Number 67 (Spring 2014)                   JWSS 2014, 18(67): 217-227 | Back to browse issues page


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M. B. Heyderianpour, A. M. Sameni, J. Sheikhi, N. Karimian, M. Zarei. Effect of Vermicompost and Nitrogen on Growth, Concentration, and Uptake of Nutrients in Sunflower. JWSS. 2014; 18 (67) :217-227
URL: http://jstnar.iut.ac.ir/article-1-1529-en.html

Abstract:   (3328 Views)
A study was conducted to evaluate the effect of vermicompost and nitrogen (N) on growth, nutrient concentration and uptake of N, phosphorus (P), potassium (K), iron (Fe), zinc (Zn), manganese (Mn), and copper (Cu) in sunflower shoots as a factorial experiment arranged in completely randomized design (CRD) with three replications under greenhouse conditions. Treatments included three levels of vermicompost (0, 2.5, and 5 % by w/w) and three N levels (0, 90, and 180 mg kg-1) as urea. Application of 2.5% vermicompost significantly increased the average fresh and dry weights, and uptake of K, Fe, Zn, Mn, and Cu of shoots as compared when no vermicompost was applied, but decreased Zn and Cu concentrations. Application of 90 mg N, increased fresh and dry weights, and concentration of N, Zn, and Mn, total uptake of N, P, K, Fe, Zn, Mn, and Cu in sunflower shoots, but decreased P concentration. Application of 180 mg N increased total N uptake than that of 90 mg N kg-1 treatment. Combination of 2.5% vermicompost with 90 mg N, significantly (p<0.05) increased dry matter yield of sunflower as compared to 2.5% vermicompost without N treatment
Full-Text [PDF 131 kb]   (876 Downloads)    
Type of Study: Research | Subject: Ggeneral
Received: 2011/06/17 | Accepted: 2012/11/27 | Published: 2014/06/7

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