Abstract

A field study was carried out during the winter of 2004-2005 at AL-Hamidiya, AL-Jazeera in Anbar province, (150 km to the west of Baghdad) on clay mixed–type soil to study six typys barely (Samir, Shuaa, Thowaitha and Warkaa) responses to two planting dates (15th of Nov. and 10th of Dec.).Split–plot design with six replicates was used in the experiement. Planting dates included the main split plots, whereas types of barely included secondary split plots. Spike length (by cm), rate of spike count (m2), rate of 1000 grains weight (g) and rate of yield weight have been studied at the time of harvesting.The experiement was statistically analyzed according to the differential analysis. Least significance difference was used for mean comparisons at 5% probability.Results of spike length rate/ cm have shown that there were no significant differences between the two dates of planting, nor in the interaction of plant dates with types of barely. There were significant differences among the types themselves. Warka gave the highest rate of spike langth of about 12.04 cm, whereas Shuaa gave the lowest rate of about 5.72 cm.There were no significant differences between the two planting dates and the interaction between them and cultivars. Significant differences were detected among cultivars.Towaitha gave the highest spike count rate of about 598 spike/ m2, whereas Shuaa gave the lowest spike count rate of about 365.91 spike/ m2.As for the weight of 1000 seeds/ m2, the results have shown significant differences between the two planting dates and the interaction between the two planting dates and cultivars and among cultivars themselves. Samir cultivar excelled in the trait of 1000 seeds weight and yield weight of about 53.49 seed/ gr. Warka cultivar gave the lowest rate for 1000 seeds weight of about 35.52 seeds/ gr.As for yield weight trait, there were no significant differences between the two planting dates and the interaction with cultivars. There were significant differences among the cultivars themselves. Samir cultivar excelled in the two dates of planting of about 1246.71 gr. as a rate of planting dates followed by Amal, Warka, Shuaa and Hadhar with 1062.35 gr, 1057.41 gr, 1014.41 gr, 1009.57 gr. rates, respectively. Twaitha cultivar gave the lowest rates in the two datas of planting of about 753.95 gr.

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The article was added to IASJ on 2012-05-24

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