Reduction in nitrate accumulation by molybdenum in spinach grown at low pH
| Autor: | D. J. Cantliffe, G. E. MacDonald, N. H. Peck |
|---|---|
| Rok vydání: | 1974 |
| Předmět: |
biology
Chemistry food and beverages Soil Science chemistry.chemical_element engineering.material biology.organism_classification N fertilizer chemistry.chemical_compound Animal science Nitrate Agronomy Molybdenum N application Nitrate nitrogen Total nitrogen engineering Spinach Fertilizer Agronomy and Crop Science |
| Zdroj: | Communications in Soil Science and Plant Analysis. 5:273-282 |
| ISSN: | 1532-2416 0010-3624 |
| DOI: | 10.1080/00103627409366506 |
| Popis: | Spinach was grown in the greenhouse in soil with the pH adjusted to 5.0, 5.5, 6.0, 6.5, and 7.0, N fertilizer rates of 0, 50 and 200 mg N/Kg soil, and Mo fertilizer rates of 0, 0.3 and 1.2 mg Mo/Kg soil. The NO3‐N concentration of the tissue increased with fertilizer N or a rise in pH from 5.0 to 7.0. The addition of Mo at either rate reduced the NO3 concentration of spinach grown at pH 5.0 and 5.5 but had no effect on plants grown at pH 6.5 or 7.0. At pH 6.0 the 1.2 mg Mo/Kg soil rate was effective at the 50 and 200 mg N/Kg soil fertilizer rates but had no effect on spinach grown without a N application. At the same pH, the 0.3 mg Mo/Kg soil rate had no effect on NO3 content of spinach grown with the 50 mg N/Kg rate but did reduce the NO3 content of spinach grown without N added or with the 200 mg N/Kg soil. The 1.2 mg Mo/Kg soil rate was more effective than 0.3 mg Mo/Kg rate in reducing NO3 content of spinach grown with 200 mg N/Kg soil at pH 5.0–6.5 inclusive but gave variable results when no ... |
| Databáze: | OpenAIRE |
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