Effect of growth rate on wood quality of teak (Tectona grandis L. f.): a comparative study of teak grown under differing site quality conditions

Abstract

The present study was carried out to analyse the effect of rate of growth on the wood quality of teak from samples collected from trees which were grown within India as well as from outside. Teak samples (basal discs) from 14 different locations viz. Nilambur, Malayattoor, Konni, Ranni, Vadavar (TN) and Betul (MP) within India and Myanmar, Thailand, Ghana, Benin, Cameroon, Sudan, Tanzania and Trinidad outside India were included in the study. To study the effect of growth rate on wood quality, the collected samples were classified as fast grown and slow grown based on their average ring width. Those samples having an average ring width C5 mm and those having an average ring width \5 mm were categorised into fast grown and slow grown respectively. The analysis on variation in wood physical, anatomical and biochemical properties between the two categories revealed that, fast grown samples were characterized with higher specific gravity, moisture content (air dry) and shrinkage compared to the slow grown, but properties like vessel diameter, vessel area, ray height, ray width and extractive content (%) was found to be significantly higher for slow grown samples. However, fast and slow grown teak showed similarity with respect to other properties such as heartwood content (%), heartwood colour and bark thickness.

Heartwood formation and prediction of heartwood parameters in Tectona grandis L.f. trees growing in forest plantations in Costa Rica

“…This result was to be expected, for as the tree ages, the height at which heartwood can be found increases (Yang et al, 1994). Anish et al (2015) agree with the results of this study, indicating that heartwood growth increases with increasing age until reaching a maximum point in the tree height in fast-growth T. grandis plantations.…”

“…For this reason, many studies have investigated heartwood formation during the growth of the tree (Moya et al, 2014). For example, Miranda et al (2011), Kumar and Dhillon (2015), Anish et al (2015), and Galeano et al (2015) observed a decrease in the diameter and proportion of heartwood as the total tree height increases. García et al (2011a and2011b) developed a prediction model that relates the variation of heartwood diameter to total tree height and to the diameter at breast height (DBH) for 2-to 14-year-old plantations of T. grandis.…”

Equations for Predicting Heartwood Merchantable Volume and Tradable Sawlog in Tectona Grandis

“…Moreover, the presence of heartwood in relatively high proportions in teak makes this species suitable for the wood industry as it gives higher added value (Hegde et al 2014). Due to these desirable features, for many years, research has been focused on the study of the formation, variation and measurements of heartwood in trees growing under fast-growth conditions (Moya et al 2014, Anish et al 2015.…”

Anatomical characteristics of <i>Tectona grandis</i> L.f from different sites in Mato Grosso state

“…The plants are affected by all of these factors acting whether jointly or independently. Studies show that the sites influence the quality of the wood, modifying its coloration, physical and mechanical properties, as well as its anatomical properties (MOYA et al, 2009;ANISH et al, 2015;RODRIGUEZ-ANDA et al, 2017).…”