| Autor: |
Dubey, H. D., Sigafus, Roy E., Freeman, J. F. |
| Zdroj: |
Agronomy Journal; March 1966, Vol. 58 Issue: 2 p228-231, 4p |
| Abstrakt: |
Initial and residual toxicity of linuron and diphenamid in 11 soils of Kentucky was studied for 17 months under greenhouse conditions, using a bioassay technique. Correlation of ED50values for these herbicides with the physical and chemical properties of the soils was determined. Organic matter content showed the highest and most consistent correlation with ED50values. Exchangeable sodium also showed significant correlation with ED50but only at certain periods of the study. Amount of clay in the soils was not correlated with ED50values even though the cation exchange capacity and ED50were correlated. The kind of clay might have some influence on the results obtained in the study. Organic matter content seemed to play the greatest role in the disappearance of linuron and diphenamid in soils. |
| Databáze: |
Supplemental Index |
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