Avaliação da infiltração de água no solo com enfoque na piscicultura

Abstract

With increased activity aimed at Aquaculture, where there is the cultivation of animals with at least one stage of their development in water, the forms of cultivation arouse a demand for applied knowledge, in the case of fish production, fish farming still has a vast horizon to be explored, as indicated by studies of the areas. Fish farming began in excavated tanks, or nurseries, systems that have many variables according to current studies. The objective of the present work was to determine the granulometry of the soil of three properties in the city of Dourados-MS and to verify the infiltration of water in the soil in the natural state of these places and to relate its importance to fish farming for the execution of the work. information in three different locations the three locations located in Dourados-MS which contained active fish farms. With a total of three areas with three repetitions each. The implantation of the rings was done manually, burying them 10 cm below the ground and 20 cm above. The rings consist of two metallic cylinders, one with a diameter of 25 cm and the other larger with a diameter of 50 cm, both with a height of 30 cm. After inserting the rings to the ground, a measuring unit was implanted in the inner ring. To start collecting information, the space between the inner and outer ring was always filled with water, and was filled when necessary. The measurement was counted in the following time intervals 0, 1, 2, 5, 10, 15 minutes. After collecting the information, a portion of soil was collected for laboratory evaluation. The results of granulometry and basic infiltration velocity (VIB) were submitted to analysis of variance (ANOVA). When verifying statistical differences, they were submitted to the Tukey test at 5% probability. The textural classifications found differ between silt and clay particles for all properties analyzed, but with results of the same texture for Aquaforte Alevinos and Fazenda Cabeceira Alta, where clayey soils were obtained and the soil of the Dourados Rural Union property was classified as very clayey, with a content above 60% for clay particles. The results obtained from VIB mean that the property Fazenda Cabeceira Alta is defined as having a high VIB, and the properties Aquaforte Alevinos and Sindicato Rural de Dourados, with a very high VIB. The importance of VIB is in the amount of water volume that will be allocated to the implementation of fish farming.