Effect of soil type on mean annual increment, wood anatomy and properties of 33-year-old Corymbia citriodora (Hook.), K. D. Hill, &amp; L. A. S. Johnson

Willyam De Lima Vieira,Iraê Amaral Guerrini,Adriano Wagner Ballarin,Erick Phelipe Amorim,Márcio Rossi,Caio Corsato Correa,Mário Tomazello-Filho,Eduardo Luiz Longui,Fabio Minoru Yamaji,Miguel Luiz Menezes Freitas

doi:10.33448/rsd-v10i10.19004

Abstract

This study aimed to determine the effects of physical, chemical and water-holding capacity of Quartzarenic Neosol, Red Latosol and Red Nitosol on tree growth, physicomechanical properties and anatomical features of wood from 33-year-old C. citriodora plantations. More clayey soils with higher water availability, such as Red Latosol and Red Nitosol, increased the mean annual increment and heartwood percentage. In more sandy soils, such as Quartzarenic Neosol, density increased, but the size and diameter of fibers and vessels decreased, and both fiber cell wall thickness and frequency of vessels and rays increased. Wood shrinkage and mechanical properties did not differ between soils. We observed a gradual increase in the anatomical, physical and mechanical characteristics in the pith-bark direction. The uniformity index showed that Quartzarenic Neosol and Red Latosol soils produced more homogeneous woods. We concluded that soil texture and water availability influenced tree growth, anatomical properties and wood density.

Highlights

Eucalyptus and Corymbia species have been planted for decades in Brazil, especially as raw material for paper and pulp, and for use as material for energy and lumber
The planting was established with the same design - spacing 3 × 2 m with one external border row of the same species without fertilization - in three different soil types: Quartzarenic Neosol (RQ), Red Latosol (LV), and Red Nitosol (NV) (Embrapa, 2019b)
3.1 Soils We found differences in soil texture according to granulometry analyses in the three soil types

Summary

Introduction

Eucalyptus and Corymbia species have been planted for decades in Brazil, especially as raw material for paper and pulp, and for use as material for energy and lumber. Eucalyptus and Corymbia plantations occupy 6,97 million hectares of planted tree area in Brazil, and the largest planted areas are located in the states of Minas Gerais (28%), São Paulo (17%) and. In Brazil, C. citriodora plantations were started with a view to physiological adaptation, growth and wood utilization for charcoal production. Objectives of plantations were expanded in order to produce sawmill wood, energy and exploration of leaves for essential oil extraction (Vitti & Brito, 1999). Knowledge of plantation site characteristics, such as temperature and precipitation, as well as texture, chemical and soil water-holding capacity, is essential to understand how these characteristics can influence productivity and wood quality.

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Methods

Conclusion