Resumo

ANDRANGO QIMBIAMBA, Pablo Miguel; ORTIZ CALLE, Randon Stalin  e  CUASPA ORTEGA, Yessenia Gissella. Distribución de caudales de riego para las comunidades de la UCICMA - Imbabura. Siembra [online]. 2019, vol.6, n.2, pp.37-45. ISSN 2477-8850.  https://doi.org/10.29166/siembra.v6i2.1562.

The distribution of irrigation water according to the cultivated area and the crop water requirements is important in the processes of equitable distribution of water among the indigenous communities of Ecuador among socialization and debate within the population. The present research consisted of determining the maximum area of irrigation according to the crop water requirements and the discharge delivered. With this data the research presents an alternative for water distribution for irrigation among the 12 communities of Unión de Comunidades Indígenas y Campesinos of Mariano Acosta (UCICMA). To calculate the crop water requirements, the following methodology was used: potential evapotranspiration (Penman Monteith), effective precipitation (SCS), crop coefficient (FAO 56), cultivation areas, planting dates and vegetative cycle (by surveys) and soil information (from studies conducted in the area). The main results of the study are: i) the continuous fictitious flow rate was about 0.58 l s-1 ha-1; ii) to irrigate the total area of the 12 communities a discharge of 950.55 l s-1 is required; iii) considering the discharge assigned of 360 l s-1, the maximum area that can be technically irrigated is about 619.96 ha. The main conclusion of the study is that the assigned discharge of 360 l s-1 will cover an irrigation area of 619.96 ha, corresponding to 37% of the potential irrigable area of the UCICMA.

Palavras-chave : Ecuador; water balance; crop water requirements; potential irrigation area; continuous discharge.

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