(1923 - 1998)
Geógrafo, espeleólogo y arqueólogo. Primer Presidente de la Academia de Ciencias de Cuba, Presidente fundador de la Federación Espeleológica de América Latina y el Caribe y de diversas sociedades científicas nacionales e internacionales.
Agrarian and Fishery Sciences
2004 | Application of the agrohydrological model to predict the use of water and cultivation yield
Main executives entity: Agrarian University of Havana (UAH) (1)
Other entities: Irrigación and Drainage Institute (2), Instituto Nacional de Investigaciones de la Caña de Azúcar (INICA) (3)
Main author: María Elena Ruiz (1).
Coauthors: From (1) Hanoi Medina, Jorge García; from (2) Teresa López, Gilberto López,  del (3) Joaquín Ruiz (3), Mayra Ferrer

The computerized simulation models constitute an important element for decision-making in agriculture. There have been developed models, for three decades, to quantify, interpret and predict their hydric cultivation needs, their yields and affectations by this concept. These have been applied in temperate climates.

This is the first research work carried out in the country to determine the parameters and entry functions that allow the application of five agro-hydrological models, under our conditions, in order to: estimate yields and optimize the use of water (SWAPCROP, SWAP) and the movement of water in the soil (MACRO, STICK), and the design of drainage systems (DRAINMOD).

One of the contributions of this work is the modification of SWAPCROP model by means of the water extraction function through the roots and its validation in cultivated potato's variety in ferralitic soils. DRAINMOD model was simultaneously applied in this cultivation, in order to evaluate the optimum option of a drainage system.

SWAP model was gauged and validated in sugar cane to estimate the yield in view of the changes of climate variables, soil and sowing time in Héctor Molina CAI. For the first time, there were described the parameters to characterize Cuban soils’ hydraulic properties, and the pedotransference functions for red ferralitic soils were compared. These results have been used in Mexico, Venezuela and Jamaica, through international projects.

MACRO and STICK models were adapted to study the hydric needs in bean and papaya, being demonstrated the need to modify the irrigation methodologies established for implying water supply losses from 15 to 55%.

These results were published in 18 articles, 3 of these in impact magazines, 1 contribution in a scientist work published abroad and 2 monographs.

There are enclosed references from 6 Cuban institutions and foreign personalities (USA, Belgium, Holland and Spain).