The Effect of Different Soil Mulch Materials on the Growth and Yield of Rice Effect of Mn application depth on Mn deficiency of two wheat genotypes Effect of environmental condition on Mn deficiency of different wheat varieties Comparison of Responses to Mn Deficiency Between the UK Wheat Genotypes Maris Butler, Paragon and the Australian Wheat Genotype C8MM The influence of different concentrations of Mn on the growth and development of wheat