Available micronutrients in agricultural soils of Tenerife (Canary Islands). II; Iron and manganese
Available Fe and Mn contents and the influence of some soil properties on the availability of these micronutrients for crops were studied in most of the agricultural zones of the island of Tenerife (Canary Islands). The mean Fe content was 110.4 mg L $ (AAAC-EDTA extractable Fe), about a third lower than that reported by FAO for other regions. 10.64% of the soils presented Fe values below the considered critical level (30 mg L$). The mean Mn content was 67.1 mg L$ (DTPA extractable Mn), almost twice that reported at international level by FAO. Only 0.28% of the soils showed values below 2 mg L ' and 2.52% of these were in the range of 2-5 mg L $., respectively considered as deficient and marginal levels. The study by zones (morth and south) shows that the northern soils presented men Fe and Mn contents sensibly higher than the southern ones. Different correlations between some soil parameters and the studied micronutrients were observed.
| Main Authors: | , , |
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| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Università di Pisa
1994
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| Online Access: | http://hdl.handle.net/10261/21354 |
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