出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：The objective of this study was to perform a comparative analysis of the behavior of soil water infiltration in a watermelon (Citrullus lanatus (Thunb.) MatsumandNakai) plantation. The study area is located in the Ipiranga Settlement Project in southeastern Pará. In the infiltration analysis the experimental design was completely randomized, with the use of two cylindrical rings (25 and 50 cm in diameter and 30 cm in height). The data of basic velocity and infiltration of water were obtained in situ and compared to two empirical mathematical models. The mean real infiltration results obtained were 14,1582 cm h-1; 5,4623 cm h-1; 13,3038 cm h-1 e 5,2538 cm h-1, respectively. The application of the empirical models elaborated by Kostiakov and Kostiakov-Lewis did not represent values close to the real, but Kostiakov-Lewis demonstrated better performance, especially in relation to the Basic Infiltration Speed. It was concluded that there is a need to review the application of empirical models of Kostiakov and Kostiakov-Lewis to the tests of water infiltration in the soil with a very long time duration, since they have unsatisfactory deviations when compared to the real value and it is suggested the application of other empirical mathematical models, however the phenomenon observed compared to the watermelon crop showed acceptable accumulated slides within a production average suitable for the southeast region of Pará.
