The fate of phosphorus and molybdenum after biosolids, swine manure and triple superphosphate were applied to a soil
作者： Jorge David Hernandez
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摘要: The effect of applying phosphorus (P) on high P test soils (STP) is a concern due to possible changes in water, soil, and crop quality. Increasing the soil may change relationships with other nutrients such as molybdenum (Mo). purpose this study was determine effects application triple superphosphate (TSP), swine manure (SM), biosolids (BS) forms extractable Mo. An incubation conducted chamber controlled temperature light. treatments consisted mixing 10 g from 4 different depths TSP, SM, BS at low rate. A sequential fractionation for inorganic organic performed. Soil Mo determined well. There were differences after applied, always produced highest values. higher treatment than SM TSP all fractions. rate increased soils. Extractable within not affected by properties depth. BS, STP resulted fractions soil. proportion were: NaOH-Po > HCI-P NaHC03-Pi H2S04-P. ^ Hernandez, J. D. Research Assistant. Dept. Agronomy, Iowa State University, Ames IA 50010 Killorn, R. Professor. IA,
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