Funciones de transferencia edafológica adaptadas a suelos de La Plata, Argentina
Available data for agricultural soils are texture, organic matter content and bulk density. Determining other variables such as saturated hydraulic conductivity and the relationship between water content and soil-water potential can be expensive and time consuming. Pedotransfer functions (PTF)...
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| Publicado en: | Revista de la Facultad de Ciencias Agrarias |
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| Autores principales: | , , , , |
| Materias: | |
| Acceso en línea: | https://bdigital.uncu.edu.ar/fichas.php?idobjeto=6477 |
| Sumario: | Available data for agricultural soils are
texture, organic matter content and bulk density.
Determining other variables such as saturated
hydraulic conductivity and the relationship
between water content and soil-water potential
can be expensive and time consuming. Pedotransfer
functions (PTF) translates available
data into results we need. The objectives of
this work were to evaluate the applicability of
PTF available in the literature to soils of the
area of La Plata (Argentina) and generate
new PTF for these soils. Results obtained
experimentally from the water characteristic
function of soils of La Plata surroundings were
used. The PTF selected to evaluate were
two: a parametric PTF (PTF of Saxton et al.,
1986), and a point estimation PTF ( PTF of
Rawls et al., 1982). For the PTF of Saxton
et al. (7), there were significant differences
between measured and estimated values for
two water potentials. The PTF of Rawls et
al. (6) estimated values significantly different
from those measured for all water potentials
tested. A point estimation PTF was generated
for La Plata soils which was effective for 33,
100 and 1500 kPa. |
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