Nutrients Concentration and Retranslocation in the Leaves and Branches of Acacia mearnsii de Wild. (Acacia-negra) Stand
Keywords:
Nutrients cycling, Biochemical cycling, Retranslocation, Black Wattle BrazilAbstract
The senescence and fall of the leaves and branches are mechanisms where thetrees can recycle the nutrients by biochemical cycling and by biogeochemical cycling. The objective of this paper was to evaluate the nutrients retranslocation in the non-deciduous leaves and branches and also in the deciduous leaves and branches. The leaves and branches for analysis were collected in the subplots of Acacia mearnsii stand at the age of three years old.The stand is located in the Rio Grande do Sul State - Brazil - in low fertility soil. The nutrients analysis results showed that the N was the element which had highest concentration for both, leaves and branches. The most retranslocated nutrients were P, K and Mg respectively. The elements N and Ca showed the lowest retranslocation in the leaves and branches.
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