FARIAS, S. A. R.; http://lattes.cnpq.br/7714562044464927; FARIAS, Soahd Arruda Rached.
Resumen:
It is considcred, in the present work, an evaluation of costs of energy and water. inside o;
the agricultural irrigated planning, getting at first the raw demands from water and energy
for the cultures of the dwarfed coconut (Cocos nucifera L.), papaya (Carica papaya) and
pacovã banana (Musa spp) in 14 cities from northeast Brazil and if used two pressured
systems, through a simulation of agronomic project of irrigation. The lesser foresecn
annual water consumption for irrigation was in the locality of Mamanguape, PB, needing
itself only 37.4%; 35.5% and 41.4% respectively, for the cultures of dwarfed coconut,
papaya and pacovã Banana, based on the consumption gotten in the locality of bigger
consumption (Petrolina, PE). Areas with good chance for irrigation had gotten the same
using electropumps (7.5 CV and 22 outflow of m3 h"1) for the cultures of dwarfed coconut,
papaya and pacovã banana, respectively, of 13.65 ha (located) and 4.54 ha (aspersion);
9,45 ha (located) and 5,18 ha (aspersion) and 6.25 ha (located) and 3.63 ha (Aspersion).
The increasing demand of water and energy practically occurred combined by the scale of
climatic classification of Hargreaves (1974b), whcre the city of Mamanguape PB (Dry-Wet
climate), covered the lesser needs for complementation, following with Pacatuba, SE,
Maceió, AE, Aracaju, SE, Natal, RN, Campina Grande, PB, later the cities Acaraú, CE,
Aracati, CE and Touros, RN of Semi-Arid climate, Canindé do São Francisco, SE, Sousa,
PB and Jaguaribe, CE, with Arid climate and Açu, RN and Petrolina, PE classified as of
Very Arid climate. The culture of the dwarfed coconut would be punished economically by
the water taxes, because of the lesser cost of maintenance related to the others two cultures in analysis. The values gotten through this study could be used as parameters for irrigated agricultural planning, with bigger trustworthiness, when the gotten averagcs, will be grouped by climate and the coefficients of variation will present low values (lesser than
10%), since they have similar sizing characteristics to the ones of this work. It is important
to observe the behavior of irrigation demand as a way of evaluating attributions of raw
water taxes, avoiding possible economic distortions due to differentiated climates in one
same hidrografic basin.