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Table 12 DTPA-extractable Fe, Zn, Cu, and Mn for deficient, marginal, and sufficient soils

From: Characterizing soils and the enduring nature of land uses around the Lake Chamo Basin in South-West Ethiopia

Category

Fe

Zn

Mn

Cu

mg/kg soil

Low (deficient)

0–2.5

0–0.5

< 1

0–0.4

Marginal

2.6–4.5

0.6–1

–

0.4–0.6

High (sufficient)

> 4.5

> 1

> 1

> 0.6

Toxic level

    
  1. Source: Harrera, (2005); Havlin et al. (1999)
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Journal of Ecology and Environment

ISSN: 2288-1220

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