Chemical and microbiological properties in soil cultivated with sugarcane (Saccharum officinarum)

Authors : Rosana Faria VİEİRA, Nilza Patrícia RAMOS

Pages : 109-114

Doi:10.18393/ejss.342511

View : 45 | Download : 10

Publication Date : 2018-04-01

Article Type : Research Paper

Abstract :The aim of this study was to evaluate the response of chemical parameters and microbiological processes related to the nitrogen insert ignore into journalissuearticles values(N); cycling in an area cultivated with sugarcane insert ignore into journalissuearticles values(SC);, as compared to the native forest area insert ignore into journalissuearticles values(NF);, considered as the reference. The pH value, the total C insert ignore into journalissuearticles values(C tot );, N insert ignore into journalissuearticles values(N tot ); contents, the P, K, Ca, Mg, Zn, Mn, B and Cu contents, the labile carbon insert ignore into journalissuearticles values(LC); content, cation exchange capacity insert ignore into journalissuearticles values(CEC);, microbial biomass N insert ignore into journalissuearticles values(N mic );, potentially mineralizable nitrogen insert ignore into journalissuearticles values(PMN); and the urease activity insert ignore into journalissuearticles values(UA); were determined in soil samples taken at depths of 0-10 and 10-20 cm. Most of the chemical properties were higher in the NF soil at both depths, except for C tot , N tot and the total K content, which did not present significant differences between the areas at the deeper level. All microbiological processes were higher in the NF soil and showed positive correlations with the total Cu and B contents, demonstrating the importance of these nutrients in the biological N cycling.  The higher values obtained for almost all parameters in the NF soil attest to the need for constant monitoring of areas cultivated with sugarcane in order to avoid the adverse effects of soil degradation. The results obtained between the areas, in relation to N cycling processes also demonstrated the suitability of using them as reliable indicators of soil quality.
Keywords : N cycling, urease activity, N immobilization, mineralizable nitrogen

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