Efecto de tres productos microbianos sobre la degradación de materia orgánica en suelos de estanques de cultivo de camarón.

Abstract

In aquaculture, soil quality directly affects the growth and survival of shrimp due to the multiple biochemical reactions that occur in the pond environment. Therefore, ideal concentrations of organic matter must be maintained throughout the culture. The process of bioremediation has been achieved through the implementation of microorganisms destined to improve the quality of the soil and water. The application of commercial products for the degradation of organic matter in aquaculture soils has shown great interest due to their effectiveness and the type of organism. The present study aimed to determine the effect of three commercial products (PA-PB-PC) on the biodegradation of organic matter in soils over a period of 48 hours. A Completely Randomized Design experiment was used to evaluate organic matter degradation and the flux of nutrients dissolved in the water. During the experiment, variables such as organic matter concentration, nutrient flux. (Ammonium, nitrite, nitrates and hosphates) and physical-chemical parameters (oxygen, pH and temperature) were recorded. The results obtained in the present study showed that the three products significantly decreased the concentration of organic matter in the soil. The higher reduction efficiency was obtained in the PA treatment with 67.25%. Regarding nutrient flux, after 48 hours a reduction of ammonium was observed in all samples. The nitrite and nitrate concentration were reduced in PB, PA and PC. An increase in phosphate concentration was observed, exceeding the initial value. The dissolved oxygen and pH decreased during the experiment. In conclusion, the use of beneficial bacteria was effective to reduce organic matter in the soil and enhance the flux of nutrients in the water.