Grazing effects of the bulk density in a Natraquoll of the flooding pampa of Argentina

The influence of grazing by cattle on soil bulk density was studied in a typic Natraquoll of the Flooding Pampa of Argentina for a period of 33 months, by comparing a grazed situation to an enclosure deferred from grazing for 7 years. Floods took place in this period as usual. Bulk density (BD) at -...

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Bibliographic Details
Published in:Journal of range management 1988-11, Vol.41 (6), p.500-503
Main Authors: Taboada, M.A, Lavado, R.S
Format: Article
Language:English
Subjects:
Agricultural soils
ARGENTINA
ARGENTINE
BOVIN
CATTLE
COMPACTACION DEL SUELO
COMPACTAGE DU SOL
CONDICIONES AMBIENTALES
CONDITION DE MILIEU
CONTENIDO DE AGUA EN EL SUELO
DENSIDAD
DENSIDAD DEL SUELO
DENSITE
DENSITE DU SOL
DENSITY
ENVIRONMENTAL CONDITIONS
FLOODED LAND
Flooded soils
Floods
Forest soils
GANADO BOVINO
Grassland soils
GRAZING
GRAZING INTENSITY
INTENSIDAD DE PASTOREO
INTENSITE DE PATURAGE
Organic soils
PAMPA
PAMPAS
PASTOREO
PATURAGE
PIETINEMENT
PISOTEO
Plant-Animal Interaction
PROPIEDADES FISICO-QUIMICAS (SUELO)
PROPRIETE PHYSICO-CHIMIQUE DU SOL
Rangeland soils
SOIL CHEMICOPHYSICAL PROPERTIES
SOIL COMPACTION
SOIL DENSITY
Soil water
SOIL WATER CONTENT
TENEUR EN EAU DU SOL
TERRE INONDEE
TIERRAS INUNDADAS
TRAMPLING
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Summary:The influence of grazing by cattle on soil bulk density was studied in a typic Natraquoll of the Flooding Pampa of Argentina for a period of 33 months, by comparing a grazed situation to an enclosure deferred from grazing for 7 years. Floods took place in this period as usual. Bulk density (BD) at -33.3 kPa of water retention varied from 1.00 to 1.11 Mg m-3in the ungrazed soil and in the grazed soil from 1.04 to 1.16 Mg m-3. Environmental factors were the primary agent controlling BD; only in some periods were there significant differences between treatments. Slight increases in BD occurred under grazing after the recession of the flood water, and significant decreases occurred in the ungrazed soil during the large and sudden falls in water content. In this case the effect of trampling, therefore, would consist mainly of impeding the decrease in BD. No compaction was observed in periods when no flood occurred or while soil remained submerged in water. The results indicated that the variations of bulk density caused by cattle trampling were superimposed on those produced by floods and showed an interaction between the effects of land-use and the particular environmental conditions of the region.
ISSN:0022-409X
2162-2728
DOI:10.2307/3899526