Pedosphere 1(2): 137--144, 1991
ISSN 1002-0160/CN 32-1315/P
©1991 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Extraction of Soil Boron for Predicting Its Availability to Plants |
| LI REN-AN, U.C.GUPTA |
| Department of Soil Science, Zhejiang Agricultural University, Hangzhou 310029 |
| ABSTRACT |
| Field and greenhouse studies were conducted in Prince Edward Island (P. E.I.) on soybean (Glycine max (L.) Merr.), red clover (Trifolium praten.se L.), alfalfa (Medieagn saliva L.), and rutabaga (Brassica napobrassica. Mill). Plant B concentrations were compared to soil B extracted by hot-water, 0.05 M HCI, 1.5 M CH3COOH and 0.01 M CaCl2. The r values for extractable soil B vs. plant B were: hot water (0.67). 0.05 M HCl (0.82), 1.5 M CH3COOH (0.78) and hot 0.01 M CaCl2(0.61). Results of soil B from the 0.05 M HCl extracts were generally found to give the best correlation and linear regression among the four extractants tested for predicting the availability of B to the plants. Overall, the 0.05 M HCl proved to be superior to hot water extraction and is recommended for predicting the available B status of the acid soils of P. E. I. |
| Key Words: |
| Citation: Li, R. A. and Gupta, U.C. 1991. Extraction of Soil Boron for Predicting Its Availability to Plants. Pedosphere. 1(2): 137-144. |
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