Avaliação de bioporos em diferentes manejos em solo subtropical

Abstract

This research objective was to evaluate the biopores determination methodology (Bs) in subtropical conditions in different managements and depths. Furthermore, qualitatively evaluate physical, chemical, and biological attributes by this method. The work was carried out in the experimental farm of Unioeste located in Entre Rios do Oeste - PR and consisted of evaluating the Bs through a 5x3 factorial scheme where the factor A consisted of different crops (T1= organic soy, T2= organic maize, T3 conventional soy preceded by rye, T4 = conventional soybean preceded by radish + black oat and T5 = conventional soybean preceded by fallow) and factor B the different depths evaluated (P1 = 10 cm, P2 = 20 cm and P3 = 40 cm ), with 4 repetitions, totaling 15 treatments and 60 experimental units. Trenches of 0.25 m2 were opened and photographs were collected for further digital analysis, recognition and counting of Bs. The production systems and the depth of evaluation influenced the number of biopores in the soil. The organic corn cultivation system showed lower biopore density values. The methodology proved to be an efficient tool to assess the density of biopores, being able to complement existing methodologies. However, there is a need for more studies in order to adapt equipment and software to the proposed method, achieving greater efficiency in image evaluation.