Influence of litter removal in the content of phosphorus and potassium in Eastern Amazon
DOI:
https://doi.org/10.5039/agraria.v12i3a5458Palavras-chave:
brazilian Amazon, nutrient cycling, secondary forestResumo
The aim of this study was to evaluate the effect of removing and seasonality of precipitation on litter deposition and content of nutrients P and K in a forest successional stage in the city of Castanhal-PA. Two systems were established: 1) removal: removal of soil and litter: 2) Control or witness, without the removal of litter. With this, 12 collectors of 1 m² were installed in each system for monthly quantification of the dry mass and obtain the contents of P and K. The total litter deposition was 6.65 and 6.24 Mg ha-1 yr-1 for control systems and removal respectively, did not differ from each other (p < 0.05). The removal of litter did not change the content of P and K, however, there was change over the months, with higher P values in the period of increased rainfall, with the K featuring reverse pattern. Therefore, litter production has performed seasonal during the year and the removal of litter caused no change in P and K content, and the rainfall was the climate variable that influenced the content of these elements.
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Este trabalho é licenciado sob uma licença Creative Commons Attribution-NonCommercial 3.0 Unported License.