Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 355771
Title Assessing soil fertility decline in the tropics using soil chemical data
Author(s) Hartemink, A.E.
Source Advances in Agronomy 89 (2006). - ISSN 0065-2113 - p. 179 - 225.
Department(s) ISRIC - World Soil Information
International Soil Reference and Information Centre
ICSU World Data Centre for Soils
Publication type Refereed Article in a scientific journal
Publication year 2006
Keyword(s) papua-new-guinea - sustainable land management - nutrient balances - organic-matter - sugar-cane - precision agriculture - physical-properties - inorganic nitrogen - brazilian amazon - forest ecosystem
Abstract Soil fertility decline is perceived to be widespread in the upland soils of the tropics, particularly in sub-Saharan Africa. Most studies have used nutrient balances to assess the degree and extent of nutrient depletion; these have created awareness but suffer methodological problems as several of the nutrient flows and stocks are not measured. This chapter focuses on the assessment of soil fertility decline using soil chemical data (pH, organic C, total N, available P, cation exchange capacity (CEC), and exchangeable cations) that are routinely collected in soil surveys or for the assessment of fertilizer recommendations. Soil fertility decline can be assessed using a set of properties from different periods at the same site or from different land-use systems with the same soils. The former is easier to interpret; the latter can be rapidly collected but differences may be due to inherent differences and not have resulted from soil management. This study provides an analytical framework for the assessment of soil fertility decline and shows pitfalls and how they should be handled. Boundary conditions are presented that could be used in future studies on soil fertility management and crop productivity in the tropics.
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