Univrsity of Tehran Press Iranian Journal of Field Crop Science 2008-4811 41 4 2011 02 20 Evaluation of Different Forage Sorghum Cultivars [Sorghum bicolor (L.) Moench] through an Assessment of Morphological, Quantitative & Qualitative Yield Traits Evaluation of Different Forage Sorghum Cultivars [Sorghum bicolor (L.) Moench] through an Assessment of Morphological, Quantitative & Qualitative Yield Traits 833 840 22066 FA Aziz Fouman Journal Article Eight forage sorghum cultivars (Sweet jumbo, Nectar, Chopper, Pacific BMR, Speed feed, KFS1, KFS2 and KFS3) were assessed to determine the most suitable traits carrying cultivar, through a randomized complete block design with four replications during 2003-2005. Ammonium phosphate (basd on P2O5) was applied at 115 Kg/ha and 183 Kg/ha of nitrogen (urea-based) at four application times. Six traits, namely green fodder, dry matter, protein yield, plant hieght, stem diameter and tiller number were assessed for each cut. Harvesting was conducted from a 7.8 m2 area. Three years’ data were analysed in a combined analysis and the means compared through Duncan Multi Rang Test (DMRT). Combined analysis of variance showed significant differences among cultivars, years, and cultivar × year interactions. A comparsion of means indicated that, Nectar and Chopper cvs. produced the highest vs. the lowest green fodder of 186.8 and 137.2 t/ha, respectively. They did not significantly differe from some other cultivars. As for dry matter yield, the cultivars Sweet jumbo, Nectar, KFS3 and KFS2 with mean yields of 39.21, 39.11, 37.54 & 37.41 t/ha, respectively ranked the top. Sweet jumbo produced the highest tiller number per plant (3.69) while Nectar yielded the highest protein (3.14 t/ha). The highest plant height (224.2 cm) and stem diameter (17.99 mm) belonged to Speed feed and KFS2, respectively. Among the cultivars, Chopper produced the lowest dry matter (32.95 t/ha), protein yield (2.62 t/ha), plant height (181.7 cm) and tiller number per plant (2.11), however the lowest stem diameter (12.33 mm), belonged to Speed feed. Eight forage sorghum cultivars (Sweet jumbo, Nectar, Chopper, Pacific BMR, Speed feed, KFS1, KFS2 and KFS3) were assessed to determine the most suitable traits carrying cultivar, through a randomized complete block design with four replications during 2003-2005. Ammonium phosphate (basd on P2O5) was applied at 115 Kg/ha and 183 Kg/ha of nitrogen (urea-based) at four application times. Six traits, namely green fodder, dry matter, protein yield, plant hieght, stem diameter and tiller number were assessed for each cut. Harvesting was conducted from a 7.8 m2 area. Three years’ data were analysed in a combined analysis and the means compared through Duncan Multi Rang Test (DMRT). Combined analysis of variance showed significant differences among cultivars, years, and cultivar × year interactions. A comparsion of means indicated that, Nectar and Chopper cvs. produced the highest vs. the lowest green fodder of 186.8 and 137.2 t/ha, respectively. They did not significantly differe from some other cultivars. As for dry matter yield, the cultivars Sweet jumbo, Nectar, KFS3 and KFS2 with mean yields of 39.21, 39.11, 37.54 & 37.41 t/ha, respectively ranked the top. Sweet jumbo produced the highest tiller number per plant (3.69) while Nectar yielded the highest protein (3.14 t/ha). The highest plant height (224.2 cm) and stem diameter (17.99 mm) belonged to Speed feed and KFS2, respectively. Among the cultivars, Chopper produced the lowest dry matter (32.95 t/ha), protein yield (2.62 t/ha), plant height (181.7 cm) and tiller number per plant (2.11), however the lowest stem diameter (12.33 mm), belonged to Speed feed. https://ijfcs.ut.ac.ir/article_22066_6e99ed46f817de00fa66a0650286d735.pdf