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| EVALUATION OF METHODS FOR SOIL INORGANIC NITROGEN ANALYSIS | |
| CROUSE, KK; VARCO, JJ; JONES, WF | |
| 1994 | |
| Source Publication | COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
 |
| ISSN | 0010-3624 |
| Volume | 25Issue:42067Pages:419-433 |
| Abstract | This study determined the effects of soil preservation methods on inorganic nitrogen (N) analysis and evaluated methods of soil inorganic N analysis. Soils were preserved by oven-drying at 55-degrees-C, air-drying at 27-degrees-C, and freezing at - 7-degrees-C. Inorganic N results were compared with initial N levels prior to imposing preservation treatments. Soil preservation effects on ammonium-nitrogen (NH4-N) were not consistent across soil types. Soil nitrate-nitrogen (NO3--N) levels after air-drying and freezing compared most favorably with initial levels indicating that both are acceptable methods of soil inorganic-N preservation. Levels Of NH4-N averaged across soils were 3.9 mg/kg for steam distillation, 4.2 mg/kg for sodium salicylate-hypochlorite, and 3.7 mg/kg for indophenol blue. When compared with steam distillation averaged across soils, NO3--N for cadmium-copper (Cd-Cu) reduction was 4 mg/kg greater, followed by nitrate electrode at 3 mg/kg, and salicylic acid at 2 mg/kg. Recovery of added N ranged from 83.3 to 94.8% for the NH4-N methods and from 74.8 to 112.4% for the NO3--N methods with the nitrate electrode averaging 98.3%. |
| Keyword | Extracts Nitrate Ammonium Availability Electrode Water Acid |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/9158 |
| Collection | 文献共享 |
| Recommended Citation GB/T 7714 | CROUSE, KK,VARCO, JJ,JONES, WF. EVALUATION OF METHODS FOR SOIL INORGANIC NITROGEN ANALYSIS[J]. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,1994,25(42067):419-433. |
| APA | CROUSE, KK,VARCO, JJ,&JONES, WF.(1994).EVALUATION OF METHODS FOR SOIL INORGANIC NITROGEN ANALYSIS.COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,25(42067),419-433. |
| MLA | CROUSE, KK,et al."EVALUATION OF METHODS FOR SOIL INORGANIC NITROGEN ANALYSIS".COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS 25.42067(1994):419-433. |
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| Evaluation of method（549KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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