Cromatografia de pfeiffer aplicada na avaliação da fertilidade do solo sob diferentes sistemas de produção

Abstract

The Pfeiffer chromatography (PCC) is a method of analysis that allows rapid interpretation of soil quality, but the application of this technique requires studies that present correlation of the results obtained by this methodology with soil fertility results obtained by conventional methods. Thus, the work aimed to evaluate CCP as a tool for a complementary analysis of soil fertility under different production systems. We evaluated the chromatographic characteristics of the central, inner, intermediate and outer zones and the size ratio between these chromatographic regions, which were categorized using a scale of notes proposed by Soiltech and corroborated with the variables pH, available phosphorus (P), microbial activity, electrical conductivity, total organic matter, labile carbon and potassium (K) concentration in soil samples from different production systems (pasture, vegetables under conventional and agroecological cultivation, and native vegetation of the cerrado biome). The chromatographic characteristics that better adjusted to the model were observed for the soils under agroecological cultivation and pasture, presenting correlation with most of the soil fertility variables. It is concluded with the research that the chromatographic characteristics allowed applying the Pfeiffer chromatography as a complementary analytical tool to conventional methods of soil fertility evaluation in the cerrado biome under different use systems.