FERTILIZACIÓN CON BORO EN PLANTACIONES DE Eucalyptus urophylla S. T. Blake en TABASCO

Abstract

RESUMENE l presente trabajo se realizó en plantaciones comerciales de Eucalyptus urophylla de la empresa Forestaciones Operativas de México, S. A. de C. V. (FOMEX) en Huimanguillo, Tabasco, Méxi-co, con la finalidad de conocer el efecto de la adición de boro (B) sobre el crecimiento de dicha especie. Se dio seguimiento a 199 árboles de E. urophylla que recibieron diferentes dosis de B (0, 6 y 12 g·árbol -1 ) durante el establecimiento. El diámetro y la altura de los árboles se midieron a las edades de 1.5, 4.5 y 11 años. Se realizó un muestreo destructivo separando fuste, ramas, ramillas + hojas, para la cuantificación de biomasa y su distribución. El contenido total de nutrimentos en el follaje se evaluó y la respuesta a la aplicación de B se midió a través de un diagnóstico gráfico de vectores. Los resultados mostraron que el B favoreció el crecimiento en altura y volumen, pero este efecto no se observó en la acumulación de biomasa aérea. El análisis de vectores mostró incremento en el contenido de P, K y Ca en el follaje cuando el B se aplicó en dosis de 6 g·árbol -1 . En dosis mayores (12 g·árbol -1 ), la biomasa foliar se redujo presentando contenidos netos y concentraciones similares en las hojas más pequeñas. ABSTRACTT his study was carried out in commercial Eucalyptus urophylla plantations owned by the Forestaciones Operativas de México, S.A. de C.V. (FOMEX) company in Huimanguillo, Tabasco, Mexico, to determine the effect of boron (B) fertilization on the growth of this species. Follow-up was given to 199 E. urophylla trees that received different B doses (0, 6 and 12 g·tree -1 ) during establishment. Tree diameter and height were measured at 1.5, 4.5 and 11 years of age. Destructive sampling was performed by separating the bole, branches, twigs + leaves to quantify biomass and its distribution. In addition, total leaf nutrient content was evaluated and the response to B application was measured using vector analysis. Results showed that B fertilization favored growth in height and wood volume, but this effect was not observed in aerial biomass accumulation. Vector analysis showed increased leaf P, K and Ca content when B was applied at a dose of 6 g·tree -1 . At the higher dose (12 g·tree -1 ), foliar biomass was lower, presenting similar net nutrient contents and concentrations to those of the smallest leaves.

Effect of planting density and tree species selection on forest bioenergy systems: tree growth, nutrient storage and wood chemical properties

“…Comparing the results with critical values indicated by Bennet, 27 the absorption of macronutrients showed similar concentrations as those reported by Bonomelli and Suarez 28 . The concentration of microelements, such as boron (B), should also be considered, for example, research has shown the critical role of B in the plant cell walls as a meeting microelement in forest plantations, which can result in poor growth 29 . As described in Guo et al ., 24 in litterfall and nutrient return, a 3‐year rotation for three Eucalyptus species, was highly dependent on the degree of biomass production and nutrient uptake.…”

“…28 The concentration of microelements, such as boron (B), should also be considered, for example, research has shown the critical role of B in the plant cell walls as a meeting microelement in forest plantations, which can result in poor growth. 29 As described in Guo et al, 24 in litterfall and nutrient return, a 3-year rotation for three Eucalyptus species, was highly dependent on the degree of biomass production and nutrient uptake. Over this period, 20% of the total above-ground biomass produced was in the form of litter, and via the litterfall, up to 24% of the total N uptake was returned to the soil surface.…”

Nutrición inicial en una reforestación de Juniperus deppeana Steud. y su capacidad de rebrote posincendio

“…Análisis de varianza para el incremento del diámetro a la base en el experimento de fertilización en brinzales de Juniperus deppeana Steud. -Juárez, et. al, 2014).…”