Litterfall and Nutrient Return in Eucalyptus dunnii Maiden in the Pampa Biome, Brazil

Dione Richer Momolli, Mauro Valdir Schumacher, Márcio Viera, Aline Aparecida Ludvichak, Claudiney do Couto Guimarães and Huan Pablo de Souza

Journal of Agricultural Science, 2024, vol. 11, issue 5, 362

Abstract: The objective of this study was to evaluate litterfall and nutrient return in a Eucalyptus dunnii Maiden stand in the Pampa Biome. Four plots were established and four litter collectors per plot were distributed systematically with an area of 0.5 m² and four subplots used to collect large branches of > 0.5 cm diameter. The collections were carried out biweekly with monthly chemical analyzes over 12 months. The annual litterfall was 8.48 Mg ha-1, of which 59% was composed of leaves. In general, the leaves had the highest macronutrient contents except for Mg. The total macronutrient return was 215 kg ha-1, in the following order- Ca > N > K > Mg > S > P, with the leaves responsible for the return of 73% of the total. The litter represented an important source of organic matter and nutrients, and temperature is the climatic variable that best explains the pattern of production.

Date: 2024
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