Evaluation of Resistance to Sheath Blight (Rhizoctonia solani) in Some Indica Hybrid Rice from Southern China Genotype difference in nitrogen utilization efficiency of wheat. Differences of phosphorus uptake and utilization in wheat cultivars with different phosphorus use efficiency for grain yield DIFFERENCE OF NITROGEN UPTAKE AND UTILIZATION IN WHEAT CULTIVARS  WITH DIFFERENT GRAIN YIELD LEVEL GENOTYPE DIFFERENCE IN NITROGEN UPTAKE AND UTILIZATION OF WILD BARLEY