Soil properties of Imperata grasslands and prospects for tree-based farming systems in Northeast Luzon, the Philippines

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Ambiguity in the potential of soils under Imperata cylindrica grass contributes to the slow pace of grassland development in Northeast Luzon. The aim of this study is to investigate the soil properties of Imperata grassland and the prospects for tree-based farming systems in northeastern Luzon. Soils are developed over Miocene-Pliocene sedimentary rock and Plio-Pleistocene volcanic and fluvial deposits. There is a clear distinction between relatively well-developed fertile soils (Cambisols, Luvisols) along hill slopes, clayey soils in lowlands (Vertisols) and inferior leached soils (Planosols) restricted to palaeo terraces and elevated surfaces. Low soil organic matter content is a regional constraint to grassland development. Other constraints mainly occur on a local level and are associated with soil physical, rather than soil chemical, properties such as low infiltration, surface crusting, gully formation, limited soil depth, and stony surfaces. It is argued that variable soil conditions and topography are inadequately considered in regional attempts to develop and rehabilitate grasslands. Fertile, low-angle foot slopes are most suitable to permanent cultivation with crop rotation and husbandry practices such as mulching of crop residues, efficient use of animal manure and inclusion of nitrogen-fixing plants. Enrichment of natural forest patches is proposed, together with mixed tree plantations on rocky and steep terrain, field boundaries and stream banks in cultivated areas. Less fertile palaeo terraces, watersheds and upper slopes are most suitable to silvipastoral systems.

Original languageEnglish
Pages (from-to)27-40
Number of pages14
JournalAgroforestry Systems
Volume52
Issue number1
DOIs
Publication statusPublished - 15 Jun 2001

Fingerprint

Imperata
farming system
Philippines
soil properties
soil property
farming systems
grasslands
grassland
terraces
soil
Imperata cylindrica
sedimentary rocks
terrace
silvopastoral systems
topographic slope
crop husbandry
Vertisols
Planosol
mulching
soil chemical properties

Keywords

  • Cogon
  • Humid tropics
  • Land use
  • Sedimentary rock

Cite this

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abstract = "Ambiguity in the potential of soils under Imperata cylindrica grass contributes to the slow pace of grassland development in Northeast Luzon. The aim of this study is to investigate the soil properties of Imperata grassland and the prospects for tree-based farming systems in northeastern Luzon. Soils are developed over Miocene-Pliocene sedimentary rock and Plio-Pleistocene volcanic and fluvial deposits. There is a clear distinction between relatively well-developed fertile soils (Cambisols, Luvisols) along hill slopes, clayey soils in lowlands (Vertisols) and inferior leached soils (Planosols) restricted to palaeo terraces and elevated surfaces. Low soil organic matter content is a regional constraint to grassland development. Other constraints mainly occur on a local level and are associated with soil physical, rather than soil chemical, properties such as low infiltration, surface crusting, gully formation, limited soil depth, and stony surfaces. It is argued that variable soil conditions and topography are inadequately considered in regional attempts to develop and rehabilitate grasslands. Fertile, low-angle foot slopes are most suitable to permanent cultivation with crop rotation and husbandry practices such as mulching of crop residues, efficient use of animal manure and inclusion of nitrogen-fixing plants. Enrichment of natural forest patches is proposed, together with mixed tree plantations on rocky and steep terrain, field boundaries and stream banks in cultivated areas. Less fertile palaeo terraces, watersheds and upper slopes are most suitable to silvipastoral systems.",
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Soil properties of Imperata grasslands and prospects for tree-based farming systems in Northeast Luzon, the Philippines. / Snelder, D. J.

In: Agroforestry Systems, Vol. 52, No. 1, 15.06.2001, p. 27-40.

Research output: Contribution to JournalArticleAcademicpeer-review

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