Effect of fertilization on cell size in wood of Eucalyptus grandis Hill ex Maiden

Abstract

ABSTRACT:The use of fertilization in forest stands results in yield gains, yet little attention has been directed to its potential effects on the quality of wood produced. Information is scarce about the effect of fertilization on anatomical structures of older Eucalyptus wood. This work aims to study the effect of fertilization on tissue cell size of wood from a Eucalyptus grandis stand at age 21 years, the management system of which is based on selective thinning and fertilizer application at the start of the thinning season. Factors to consider include: presence or absence of fertilizers, two log positions and five radial (pith to bark) positions. Results led to the conclusion that fertilization significantly influenced only vessel frequency. Vessel element length was influenced by tree height. Fiber length, fiber diameter, fiber wall thickness, vessel element length, vessel diameter and vessel frequency were influenced by the radial position of the sample in relation to the log. A positive correlation was observed between fiber length, fiber diameter, fiber wall thickness, vessel element length, vessel diameter, ray width and radial position, while a negative correlation was observed between ray frequency and radial position.Key words: Forest management, wood anatomy, wood quality. EFEITO DA FERTILIZAÇÃO NAS DIMENSÕES CELULARES DA MADEIRA DE Eucalyptus grandis Hill Ex Maiden RESUMO: A fertilização no plantio de floresta resulta em ganhos de produtividade, porém pouca atenção tem sido dada aos possíveis efeitos que ela possa ter sobre a qualidade da madeira produzida. São poucas as informações a respeito do efeito da fertilização nas características anatômicas das madeiras de Eucalyptus em idade mais avançada. Neste trabalho, objetivou-se estudar o efeito da fertilização nas dimensões celulares da madeira em uma população de Eucalyptus grandis, de 21 anos de idade, manejada pelo sistema de desbastes seletivos com aplicação de fertilizantes na época do início dos desbastes. Os fatores utilizados foram: presença ou ausência de fertilizantes, duas posições das toras e cinco posições radiais. De acordo com os resultados obtidos

The Effects of Nitrogen Fertilisation on the Anatomical Properties of the Populus alba L. Clone ‘Villafranca’ Juvenile Wood

“…According to the results, the change in CVA could be controlled by the complex interaction of the parameters included in its calculation. In Eucalyptus grandis fertilised wood, significant differences have been determined in fibre length, fibre diameter, fibre wall thickness, and vessel diameter following the radial position [ 48 ].…”

Comparative wood anatomy of Ficus cestrifolia (Moraceae) in two distinct soil conditions

“…Both populations present similar vessel diameter means, but MAQ population has a higher vessel frequency. Studies show that an increase in soil fertilization results in vessel frequency raise (Lima et al 2010). There is an interaction between water and nutrient uptake affecting tree physiology in processes such as photosynthesis, thus increasing transpiration and affecting wood hydraulics (Phillips et al 2001).…”

Influence of soil physicochemical properties on biometrical and physical features of persian oak wood

“…The density of wood is generally lower on more fertile soils, which are conductive to faster tree growth. This lead to an increase in the percentage of wood vessels with thinner fiber walls on fertile soils (Lima et al 2010, Mevanarivo et al 2020.…”