title: [Physiological and ecological effects of sulfur fertilization on soybean].
abstract: A pot experiment with 3 levels of elemental sulfur (0, 30, and 60 mg S x kg(-1)) showed that sulfur fertilization on soybean increased the side roots number by 8.6% - 33.2%, root dry weight by 6.6% - 34.3%, root nodules number by 2.7% - 35.9% and dry weight by 13.0% - 75.7%, chlorophyll content by 0.4 - 3.9 unit, and yield per plant by 7.3% - 12.8%. Sulfur fertilization also increased the amount of soil bacteria, fungi and actinomycetes and the activities of peroxidase, urease, neutral phosphatase and polyphenoloxidase significantly. The effects of sulfur supply differed with its application rate, and 30 mg S x kg(-1) was more appropriate for getting high soybean yield.
authors.affiliation: State Key Laboratory of Water Resource and Hydraulic Engineering, Hohai University, Nanjing 210098, China. ywzhao@njau.edu.cn
authors.forename: Yanwen
authors.initials: Y
authors.lastname: Zhao
authors.forename: Dongmei
authors.initials: D
authors.lastname: Bi
authors.forename: Quanzhi
authors.initials: Q
authors.lastname: Zhao
authors.forename: Changzhen
authors.initials: C
authors.lastname: Liu
authors.forename: Zhengyi
authors.initials: Z
authors.lastname: Hu
mesh_terms: D004463:Ecology; D017753:Ecosystem; D005308:Fertilizers; D009195:Peroxidase / Q000378:metabolism; D010744:Phosphoric Monoester Hydrolases / Q000378:metabolism; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology; D013025:Glycine max / Q000502:physiology*; D013455:Sulfur / Q000494:pharmacology*; D014510:Urease / Q000378:metabolism
chemical_list: D005308:Fertilizers; D012987:Soil; D013455:Sulfur; D009195:Peroxidase; D010744:Phosphoric Monoester Hydrolases; D014510:Urease