المجلة الدولية للعلوم والتقنية

The field experiment was conducted during the winter season (2012 and 2013) at a private farm of El-Zawia area, Libya; to study the response of five barley varieties namely, Betcher, Giza123, Califrnia mariout, misc.39 and ACSAD176 to three different sources of mineral nitrogen fertilizers (ammonium sulfate, 21.5 % N; ammonium nitrate, 33.5 % N; and urea, 46 % N) under the sandy soil conditions. As well as study the impact of these fertilizers on characteristics of growth and quality of yield of barley crop (plant height - flag leaf area - the number of spikes/ m² - number of grains/ spike, 1000 grain weight and grain yield ardab/ ha) to determine the appropriate barley varieties with of the fertilizer nitrogen source under local conditions in sandy soil at El-Zawia area.
The results revealed that presence of significant differences between varieties of barley plant. The variety of Califrnia mariout surpassed the other varieties, followed by Betcher, then Giza123, while misc.39 was less one in an average of plant height, flag leaf area, number of spikes/m², number of grains/ spike,1000 grains weight and grain yield ardab/ ha.
The results also showed that the ammonium sulfate fertilizer gave the best result of the qualities of growth, product yield and its components with each of the five barley varieties as compared with the two other sources of ammonium nitrate or urea fertilizers as a source of nitrogen.