title: Permissible value for vanadium in allitic udic ferrisols based on physiological responses of green Chinese cabbage and soil microbes.
abstract: Greenhouse experiments were conducted to study the permissible value of vanadium (V) based on the growth and physiological responses of green Chinese cabbage (Brassica chinensis L.), and effects of V on microbial biomass carbon (MBC) and enzyme activities in allitic udic ferrisols were also studied. The results showed that biomass of cabbage grown on soil treated with 133 mg V kg(-1) significantly decreased by 25.1% compared with the control (P < 0.05). Vanadium concentrations in leaves and roots increased with increasing soil V concentration. Contents of vitamin C (Vc) increased by 10.3%, while that of soluble sugar in leaves significantly decreased by 54.0% when soil V concentration was 133 mg kg(-1), respectively. The uptake of essential nutrient elements by cabbage was disturbed when soil V concentration exceeded 253 mg kg(-1). Soil MBC was significantly stimulated by 15.5%, while dehydrogenase activity significantly decreased by 62.8% and urease activity slightly changed at treatment of 133 mg V kg(-1) as compared with the control, respectively. Therefore, the permissible value of V in allitic udic ferrisols is proposed as 130 mg kg(-1).
authors: Institute of Environmental Engineering, School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China.
authors: Xi-Yuan
authors: XY
authors: Xiao
authors: Miao
authors: M
authors: Yang
authors: Zhao-Hui
authors: ZH
authors: Guo
authors: Yue-Ping
authors: YP
authors: Luo
authors: Jun-Ping
authors: JP
authors: Bi
mesh_terms: D001937:Brassica / Q000254:growth & development / Q000378:metabolism* / Q000382:microbiology; D018515:Plant Leaves / Q000254:growth & development / Q000378:metabolism* / Q000382:microbiology; D018517:Plant Roots / Q000254:growth & development / Q000378:metabolism* / Q000382:microbiology; D012987:Soil; D012988:Soil Microbiology; D014639:Vanadium / Q000378:metabolism* / Q000494:pharmacology*
chemical_list: D012987:Soil; D014639:Vanadium