Metodología para la determinación de la evapotranspiración integrada y la capacidad de canales en una zona de riego
Capacity of irrigation networks needs to satisfy peak crop water demands. The methods to size canal capacity require the estimation of an agronomic variable: crop evapotranspiration. There is not an integrated procedure to estimate crop evapotranspiration for large irrigation zones with a dive...
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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=4320 |
| Sumario: | Capacity of irrigation networks needs
to satisfy peak crop water demands. The
methods to size canal capacity require the
estimation of an agronomic variable: crop
evapotranspiration. There is not an integrated
procedure to estimate crop evapotranspiration
for large irrigation zones with a diversified crop
pattern, different planting dates, and several
crop seasons. Not having this procedure
generates uncertainty in methods for canal
capacity estimations. This paper presents
a methodological proposal to estimate the
ET variable for large irrigation zones. The
procedure starts with calculating the ET for
each planting date per crop and season. Next,
it integrates a general ET curve for the water
year that finds the evapotranspiration for the
irrigation zone (ETzr). The methodology was
applied to size the main canal that supplies
the “Santa Rosa” Water Irrigation Association
in the 075 Irrigation District located in the state
of Sinaloa, Mexico. A value of 4.1 mm d-1 was
estimated for ETzr. The results indicate the
proposed method’s accuracy to estimate the
ET variable to size irrigation canals. |
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