首页   按字顺浏览 期刊浏览 卷期浏览 Available and total forms of copper and zinc in basaltic soils of the Nigerian Savanna
Available and total forms of copper and zinc in basaltic soils of the Nigerian Savanna

 

作者: T. Kparmwang,   I. E. Esu,   V. O. Chude,  

 

期刊: Communications in Soil Science and Plant Analysis  (Taylor Available online 1998)
卷期: Volume 29, issue 15-16  

页码: 2235-2245

 

ISSN:0010-3624

 

年代: 1998

 

DOI:10.1080/00103629809370107

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

The available (0.1M HCl‐ and DTPA‐extractable) and total forms of copper (Cu) and zinc (Zn) were determined in soils developed on various groups of basalts, namely, the Newer, Older, Lateritized‐Older, and Biu (undifferentiated) basalts. The HCl‐, DTPA‐extractable, and total Cu in the soils ranged from 0.40 to 5.60, 0.15 to 2.64, and 15 to 65 mg Cu kg‐1, respectively, with corresponding means values of 2.06, 0.89, and 41 mg Cu kg‐1. Similarly, HCl‐, DTPA‐extractable, and total Zn varied from 3.00 to 6.20, 0.14 to 2.15, and 25 to 265 mg Zn kg‐1with respective mean values of 4.65, 0.52, and 89 mg Zn kg‐1. The soils were high in the total forms of Cu and Zn, generally sufficient in available Cu, but deficient in available Zn. Both the total and available forms of Cu and Zn were little correlated with soil properties in soils of the Lateritized‐Older and Biu basalts, while only the available forms were related mainly to silt, clay, pH, and organic carbon in soils of the Newer and Older basalts. Furthermore, the available forms were correlated with each other, but not with the total forms.

 

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