In recent years, barley has attracted more interest as a food and feed source because of its high soluble dietary fiber and β-glucan content compared with other small grains. Twenty-five barley genotypes (20 imported genotypes and five check cultivars) were grown in three environments for two successive seasons: 2015/2016 and 2016/2017. The first environment was in El-Nubaria, Alexandria, Egypt during 2015/2016, while the second and third environments were in El-Bostan, Elbhera, Egypt during 2015/2016 and 2016/2017. The experiments were conducted in a randomized complete block design with the three replicates. The primary objectives of the current study were to evaluate the performance of 20 imported barley genotypes under several environmental conditions. The imported materials were superior to the local commercial cultivars for several traits, including grain yield. Therefore, the superior genotypes will be further evaluated and used in barley breeding programs. Our future work will focus on creating several crosses among the selected superior genotypes to improve yield and other important traits, while applying marker-assisted selection.

Two field experiments were carried out in the Experimental Farm of the Faculty of Agriculture Damanhour, Alexandria University at El-Boustan region in each of 2003/2004 and 2004/2005 growing seasons. The aim of this investigation was to study the effect of the three late sowing dates (Dec.10 th , Dec.20 th and Dec.30 th ) on productivity of four Egyptian wheat cultivars (Sakha 8, Gemmiza 7 ,Giza 168 and Seds 1) which were sown by the three seeding rates (350,400 and 450 grains /m 2 ).A split -split-plot design with four replicates was used in each experiment. The sowing dates occupied the main plots while both cultivars and seeding rates were arranged in the sub and sub-sub plots , respectively. The results could be summarized as follows:-The sowing dates had a significant effect on all studied traits, except harvest index in both seasons. The highest values were recorded when the wheat cultivars were sown at Dec.10 th . -Significant differences among wheat cultivars were observed for all studied traits , in both seasons. Giza 168 cultivar surpassed the three other cultivars for all traits, in both seasons. -All studied traits were significantly affected by seeding rates except spike length and harvest index in the second season and number of spikelets/spike & number of grains /spike, in both seasons. -The first and second order interactions significantly affected all studied traits in both seasons,except the interaction between sowing dates and seeding rates for harvest index in the second season. Generally, it could be concluded that sowing Giza 168 wheat cultivar, by 400 grains/m 2 with delayed dates on Dec.10 th increasing to 450 grains /m 2 with more delaying dates until Dec.30 th could improve wheat yield under newly cultivated sandy soil conditions * ** 1732.03 Ns ** 13.93 Ns ** 7.57 ** ** 7.42 * ** 4.11 Ns ** 1.57 * ** 0.99 * * 268.86 Ns ** 162.28 * ** 101.12 * * 122.97 3 2 6 Replications Sowing dates (D) Error "a" ** **

The present investigation was carried out in sandy soil at the Experimental Farm of El-Boustan, Faculty of Agriculture, Damanhour, Alexandria University, during 2003/2004 and 2004/2005 growing seasons. This investigation was designed to evaluate the performance and production of two wheat cultivars i.e.,Giza 164 and Sakha 69 as well as the effect of three bio-nitrogen fertilization treatments (untreated, Nitrobin and Microbin) and five rates of chemical nitrogen fertilizer doses (49, 98, 147, 196 and 245 Kg N/ha) on these cultivars of wheat. The following results were recorded:  Giza 164 cultivar significantly surpassed Sakha 69 cultivar in all studied traits i.e., grain yield (ton/ha), straw yield (ton/ha), biological yield (ton/ha), harvest index (%), number of spikes/m 2 , spike length, number of kernels/spike, 1000-kernel weight and plant height, in both seasons.  As for bio-nitrogen fertilization, all studied traits, except harvest index, highly significantly increased by inoculation of wheat grains either by Nitrobin or Microbin compared with uninoculated ones, in both seasons. Microbin biofertilizer insignificantly increased all studied traitsexcept harvest index-compared with Nitrobin, in both seasons.  Increasing doses of chemical nitrogen fertilization showed significant effect on all studied traits-except harvest index-in both seasons, up to 196 Kg N/ha whereas differences between of 196 and 245 Kg N/ha were insignificant.  There were highly significant interaction between bio-nitrogen fertilization treatments and doses of chemical nitrogen fertilizer for all studied traits, except harvest index.  The present study recommended sowing inoculated grains of Giza 164 wheat cultivar by Microbin plus of 196 Kg N/ha of chemical nitrogen fertilizer to produce good production of grain yield and decreasing environmental pollution by decreasing chemical nitrogen fertilizers by 20 % under newly reclaimed sandy soil conditions.