Establishing environmental soil phosphorus thresholds to decrease the risk of losses to water in soils from Rio Grande do Sul, Brazil
Luciano Colpo Gatiboni, Rodrigo da Silveira Nicoloso, Gilmar Luiz Mumbach, Abelino Anacleto de Souza, Daniel João Dall’Orsoletta, Djalma Eugênio Schmitt, T. J. Smyth
Abstract
The overloading of soil with manure or mineral fertilizers enhances phosphorus (P) availability, promoting its loss to water bodies and increasing the risk of eutrophication. In this sense, the establishment of an environmental P threshold is a simple and useful tool to classify soils regards its risk of P losses. Here we propose a P-threshold for soils from the state of Rio Grande do Sul (RS) in Brazil, with the soil clay content as the principal variable of the [...]
Topics & Concepts
Soil waterEutrophicationEnvironmental scienceManurePhosphorusSoil scienceNutrientEnvironmental engineeringHydrology (agriculture)Environmental protectionAgronomyEcologyGeologyChemistryBiologyGeotechnical engineeringOrganic chemistrySoil and Water Nutrient DynamicsPhosphorus and nutrient managementSoil erosion and sediment transport