تلخیص
Twenty four soil samples (0-20cm) were collected from Bajada ant} Terrace plain soils. Oats were grown in pots using these soils for 5 weeks. The yield and Cu contents in the plants were,on an average, higher in Bajada plains. There was no significant correlation between dry matter yield and Cu contents of soil. The maximum amount of Cu in the soils was extracted with 0,01M EDTA + 1M(NH4)2C03 followed by 3% HNQ3 andlNNH4OAc. Significant positive correlation (r=0H586*) was found between Cu contents of oat plants and that of INNH4OAC extractable Cu of soils of Bajada plains. No significant correlation was found between Cu contents of the oat and that of soil extracted with other extractants. Yield was not significantly correlated with Cu contents of the oat. Significant positive correlation was found between lNNH4OAc-extractable Cu and soil clay (r=0.721*> and CaC03 (r=0.682*) and negative correlation (r=* -0.698*) between CaCO^ and HNO3 extractable Cu of soils of Bajada plains. In Terrace plains negative correlation was found between pH (r* -0.776**), O.M.
MUHAMMAD RAMZAN CHAUDHRY** . (1986) Use of Different Extractants for Determination of Cu Status of Bajada & terrace Plain Soils of Turkey, The Journal Soil & Environment , Volume 1, Issue 4.
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