English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Determination sampling point for micronutrients quantification in Acacia mearnsii De Wild. The objective of this study was to quantify the biomass and to determine the optimal sampling point for nutrients quantification in Acacia mearnsii trees. The work was conducted in black wattle stand, whit four years old, located in Arroio dos Ratos city in a farm belonging to Agroseta S.A., having as coordinates 30°07’12” of south latitude and 51°57’45” of longitude west, with 90 m of average altitude. After the forest inventory 21 trees were felled, distributed in 7 diametric classes, to cover the stand heterogeneity. The biomass and the micronutrients amount in the leaves, live branches, dead branches, roots, wood and bark were determined. Samples of wood and bark were taken along the stem in the positions of: 1, 3, 10, 20, 30, 40, 50, 60, 70, 80 and 90% of the total height. The micronutrients levels for B, Cu, Fe, Mn and Zn didn’t show significant difference along the stem to wood and bark, indicating that there isn’t an exact point for sampling along the stem to nutrients quantification. It’s possible to estimate the stock of micronutrients by samples collected at DBH to 4 years of age. For this it’s recommended to use the borer, for not to fell the sampled trees.

DETERMINAÇÃO DO PONTO DE AMOSTRAGEM PARA A QUANTIFICAÇÃO DE MICRONUTRIENTES EM ACÁCIA-NEGRA (Acacia mearnsii De Wild.)