This study was carried out during 2013/2014 and 2014/2015 seasons to examine the effect of single and combined soil applications of yeast at 200g./plant/year as well as spraying potassium sulphate and micronized sulphur each at 0.5% on growth and fruiting of Williams bananas grown under Beni- Suef Governorate climatic conditions. Single and combined soil application of yeast at 200g./plant/year as well as spraying potassium sulphate and micronized sulphur each at 0.5% were very effective in enhancing all growth aspects,yield and fruit characteristics relative to the check treatment. This promotion was substantially related to using yeast, potassium sulphate and micronized sulphur in descending order. Combined applications were more favourable than using each material alone in this respect. Four sprays of a mixture containing potassium sulphate and micronized sulphur each at 0.5% besides soil application of yeast once at 200g./plant/year were responsible for improving yield and fruit quality of Williams bananas grown under Beni- Suef Governorate climatic conditions.