| Autor: |
Hood, J. T., Brady, N. C., Lathwell, D. J. |
| Zdroj: |
Soil Science Society of America Journal; April 1956, Vol. 20 Issue: 2 p228-231, 4p |
| Abstrakt: |
An attempt was made to evaluate in a relative way the K in the soil solution as a measure of the immediately available potassium in the soil. When the K content of Ladino clover was below the critical level, the water soluble potassium, a measure of the K in the soil solution, was better correlated with yield than was exchangeable K. The water soluble potassium also gave a better correlation with the potassium absorbed by plants in a short period of time. A percolation procedure which consisted of leaching a soil with a large volume of a low electrolyte extractant was a better measure of the K supplying power of a soil than the initial exchangeable level of potassium. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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