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objetivou-se avaliar o retorno de macronutrientes (N, P, K) produzido em duas fisionomias do dominio Cerrado, sendo, uma fisionomia de cerrado sensu stricto ( s.s ) e outra de mata ciliar, ambas as areas localizadas na Fazenda Experimental da Universidade Federal do Tocantins, Campus de Gurupi - TO. As amostras foram submetidas a analise de rotina para os macronutrientes N, P e K. Os maiores valores de precipitacao foram registrados no periodo de novembro de 2012 a abril de 2013. Os maiores teores de nutrientes na fisionomia cerrado sensu stricto foram depositadas no final da estacao seca.  Os menores teores de nutrientes foram encontrados no inicio da estacao chuvosa. Na fisionomia de mata ciliar os teores de nutrientes nitrogenio e fosforo ocorreram de forma variavel. A folha foi a fracao que apresentou maior teor de nutrientes devido a grande deposicao de serapilheira que ela apresentou durante o periodo de estudo. N P K nutrientes time variation of leaflitter from two cerrado biome physiognomies in Gurupi - TO Abstract : this study aimed to evaluate the return of macronutrients (N, P, K) produced in two Cerrado biome physiognomies, being one cerrado stricto sensu (ss) and the other Riparian forest, both areas located at the Experimental Farm of the Tocantins Federal University, Campus of Gurupi - TO. Samples were sent to the UFT Gurupi Campus Soils Laboratory - TO, where routine analysis for macronutrients N, P and K took place. The highest precipitation amounts were recorded in the period from November 2012 to April 2013. The highest nutrient levels in the cerrado stricto sensu were deposited at the end of the dry season. The lower levels of nutrients were found in beginning of the rainy season. In the riparian physiognomy the contents of phosphorus and nitrogen nutrients occurred in varying degrees. The leaf fraction showed the highest nutrient content due to the large deposition of litter it presented during the study period.

Variação temporal de nutrientes N P K na serapilheira de duas fisionomias do domínio cerrado, Gurupi - TO