SEASONALITY OF THE BARK TANNINS CONTENT OF FIVE-YEAR-OLD Acacia mangium TREES GROWN IN NORTHEAST BRAZIL

IF 0.6 4区农林科学 Q4 FORESTRY

Revista Arvore Pub Date : 2021-07-26 DOI:10.1590/1806-908820210000023

Jaltiery Bezerra de Souza, Tatiane Kelly Barbosa de Azevêdo, A. S. Pimenta, J. Gomes, João Gilberto Ucella Meza Filho, Bruna Rafaella Ferreira da Silva

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引用次数: 4

Abstract

ABSTRACT This study aimed to assess the influence of the seasonality on the bark tannins content of Acacia mangium trees grown in the Northeastern Brazilian Region and the effect of soil preparation on the results. Two experimental plots of 1.0 ha each were submitted to different soil preparation methods, with two different intensities. The experimental design consisted of four treatments, two types of soil preparation and, two different bark collection seasons (end of the rainy and dry seasons). The bark of the trees was collected in each treatment and the contents of condensed tannins were determined. For each experimental treatment, 15 trees were harvested and debarked. Bark material was submitted to extraction with hot water, obtaining the total solids content (TSC), Stiasny index (I), and the condensed tannins content (CTC). There was no influence of the soil preparation method on the TSC, I, and CTC. However, there was a significant difference in these parameters for tree bark collected in the rainy season, with higher values. The less intensive soil preparation method is recommended due to its lower cost, and bark should be collected at the end of the rainy season for the best yield of condensed tannins.

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生长在巴西东北部的五年树龄芒果Acacia树BARK TANNINS含量的季节性

摘要本研究旨在评估季节性对生长在巴西东北部地区的芒果Acacia树树皮单宁含量的影响，以及土壤处理对结果的影响。将两个1.0公顷的试验地块分别采用两种不同强度的不同土壤处理方法。实验设计包括四种处理、两种类型的土壤处理和两个不同的树皮采集季节（雨季和旱季结束）。在每次处理中收集树皮，并测定缩合单宁的含量。对于每个实验处理，收获15棵树并进行剥皮。用热水提取树皮材料，获得总固体含量（TSC）、Stiasny指数（I）和缩合单宁含量（CTC）。土壤处理方法对TSC、I和CTC没有影响。然而，雨季采集的树皮的这些参数存在显著差异，数值更高。由于成本较低，建议采用强度较小的土壤处理方法，并且应在雨季结束时收集树皮，以获得最佳的浓缩单宁产量。

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来源期刊

Revista Arvore FORESTRY-

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： A Revista Árvore é um veículo de comunicação científica da Sociedade de Investigações Florestais – SIF. O jornal é de acesso gratuito, revisado por pares, que publica bimestralmente trabalhos científicos originais no campo da Ciência Florestal. As áreas temáticas para publicação são: Ambiência e Conservação da Natureza, Manejo Florestal, Silvicultura e Tecnologia da Madeira e Utilização de Produtos Florestais. A política editorial visa manter alta conduta ética em relação à publicação e aos seus funcionários, rigor na qualidade dos artigos científicos, seleção de revisores qualificados, respeito profissional aos autores e processo de tomada de decisão imparcial. A Revista Árvore publica artigos apenas em inglês. Artigos de revisão podem ser publicados se houver uma discussão relevante resumindo o estado da arte sobre o assunto. A revisão estrita da literatura não é aceita.