Efficiency of Phosphorus use of Five Grain Sorghum Sorghum bicolor L.Cultivars.

Abstract

The experiment was conducted during summer season (2014), in the Demonstration Farm of the College of Agricultural Studies at Shambat, Sudan University of Science and Technology, in order to study the effect of phosphorus fertilizer on growth and productivity of five cultivars of sorghum(Sorghum bicolour L Moench)., and also to evaluate phosphorus use efficiency.The experiment was arranged in asplit trial with phosphorus as the main plot(with and without) and five sorghum cultivars is (Butana, Tabat , ArfaGadamak , Wad Ahmed , Tetron ) as the sub-plot with for replications. , Plant height(cm) , number of leave, leaf area(cm2),stem diameter, plant fresh weight(g),plant dryweight(g),length of panicle(cm),weight of seed/panicle(g),cweight of 100seed(g),number of panicle, yield (t/ha )and phosphorus use efficiencywere measured. The results revealed that phosphorus affectedyieldandgrowth characters. Arfagadamakreveleded the bestphosphoruse efficiency , therefore the highest productivity (12.75 tan/h), and Wadahmedshowedthe lowest use of phosphorus and gave the lowest use efficiencyproductivity (9.45 t/ha).