Plant Soil Environ., 2007, 53(3):120-128 | DOI: 10.17221/2227-PSE

Effect of foliar urea application on quality, growth, mineral uptake and yield of broccoli (Brassica oleracea L., var. italica)

E. Yildirim1, I. Guvenc2, M. Turan2, A. Karatas1
1 Ispir Hamza Polat Vocational Training School, Atatürk University, Erzurum, Turkey
2 Faculty of Agriculture, Atatürk University, Erzurum, Turkey

The objective of this study was to determine the effect of foliar urea applications on quality, growth, mineral content and yield of broccoli under field conditions in 2003, 2004 and 2005. Broccoli cultivars AG 3317 and AG 3324 were treated with foliar urea applications at different concentrations (0.0, 0.4, 0.8 and 1.0%). Foliar applications of urea, especially 0.8 and 1.0% resulted in larger heads, weightier heads and plants as well as higher plants. Conversely, the greatest head and leaf dry matter contents were obtained with no fertilizer-nitrogen application. SPAD chlorophyll readings that were measured in the third year increased with elevated urea concentrations. In regard to the nutrient content, it can be interfered that soil nitrogen fertilization and foliar urea applications increased the content of almost all nutrients in leaves and heads of both broccoli cultivars in three experiment years. Generally, the greatest values were obtained from 1.0% urea application for both cultivars. It results from the study that for optimum yields 0.61 and 0.96% concentrations of urea sprays could be successfully used to obtain better growth and yield in broccoli cultivars AG 3317 and AG 3324, respectively.

Keywords: broccoli; fertilization; foliar application; mineral uptake; urea; yield

Published: March 31, 2007  Show citation

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Yildirim E, Guvenc I, Turan M, Karatas A. Effect of foliar urea application on quality, growth, mineral uptake and yield of broccoli (Brassica oleracea L., var. italica). Plant Soil Environ. 2007;53(3):120-128. doi: 10.17221/2227-PSE.
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