Increased carbon dioxide concentration in the air reduces the severity of Ceratocystis wilt in Eucalyptus clonal plantlets

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Population Dynamics of Lepidoptera Pests in Eucalyptus urophylla Plantations in the Brazilian Amazonia

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Alpha and beta diversity of lepidoptera in eucalyptus plantations in the amazonian region of Brazil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Comprehensive two-dimensional gas chromatography combined to multivariate data analysis for detection of disease-resistant clones of Eucalyptus

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Variação, herdabilidade e ganhos genéticos em progênies de Eucalyptus tereticornis aos 25 anos de idade em Batatais-SP

The wood of Eucalyptus tereticornis is intensively used for timber, structures, buildings, poles, posts and coal. The aim of this study was to estimate genetic parameters and genetic and phenotypic correlations in growth and stem form traits of 52 open-pollinated progenies of E. tereticornis sampled from three Australian populations (20 progenies from Helenvale, 19 from Ravenshoe and 13 from Mt. Garnet). The progenies were compared with three commercial control also from Australian. The experimental design used was the compact family block, with the effect of provenance allocated in the plots and progenies within provenances in the subplots. Ten repetitions of the 52 treatments, sub-plots with six plants and the spacing of 3 x 2 m was used. At 25 years of age it was measured the diameter at breast height (DBH), total height, true volume and the stem form. We found genetic variation amon and within the three provenances and the possibility of obtaining high gains from mass selection and individual among and within progenies. The provenance Helenvale showed the best development for DBH, height and volume. The traits DBH, height and volume showed high genetic correlations (> 0.9), indicating the possibility to use the indirect selection. The coefficient of heritability on a progeny mean for the traits DBH and height was median, being 0.31 and 0.30, respectively. The expected genetic gain with the selection were estimated at 12.4% for DBH and 8.5 % for plant height. These results will subsidize the transformation of the provenance and progeny test in a seedling seed orchard and a clonal seed orchard.

Dynamics of soil exploration by fine roots down to a depth of 10 m throughout the entire rotation in Eucalyptus grandis plantations

Although highly weathered soils cover considerable areas in tropical regions, little is known about exploration by roots in deep soil layers. Intensively managed Eucalyptus plantations are simple forest ecosystems that can provide an insight into the belowground growth strategy of fast-growing tropical trees. Fast exploration of deep soil layers by eucalypt fine roots may contribute to achieving a gross primary production that is among the highest in the world for forests. Soil exploration by fine roots down to a depth of 10 m was studied throughout the complete cycle in Eucalyptus grandis plantations managed in short rotation. Intersects of fine roots, less than 1 mm in diameter, and medium-sized roots, 1-3 mm in diameter, were counted on trench walls in a chronosequence of 1-, 2-, 3.5-, and 6-year-old plantations on a sandy soil, as well as in an adjacent 6-year-old stand growing in a clayey soil. Two soil profiles were studied down to a depth of 10 m in each stand (down to 6 m at ages 1 and 2 years) and 4 soil profiles down to 1.5-3.0 m deep. The root intersects were counted on 224 m(2) of trench walls in 15 pits. Monitoring the soil water content showed that, after clear cutting, almost all the available water stored down to a depth of 7 m was taken up by tree roots within 1.1 year of planting. The soil space was explored intensively by fine roots down to a depth of 3 m from 1 year after planting, with an increase in anisotropy in the upper layers throughout the rotation. About 60% of fine root intersects were found at a depth of more than 1 m, irrespective of stand age. The root distribution was isotropic in deep soil layers and kriged maps showed fine root clumping. A considerable volume of soil was explored by fine roots in eucalypt plantations on deep tropical soils, which might prevent water and nutrient losses by deep drainage after canopy closure and contribute to maximizing resource uses.

Effects of potassium and sodium supply on drought-adaptive mechanisms in Eucalyptus grandis plantations

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Atlantic rainforest remnant harbors greater biotic diversity but reduced lepidopteran populations compared to a eucalyptus plantation

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Biodegradation of eucalyptus urograndis wood by fungi

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Qualidade da madeira e da celulose de clones de Eucalyptus spp. de diferentes densidades

Pós-graduação em Ciência Florestal - FCA

Caracterização física de painéis aglomerados de Eucalyptus grandis com adição de resíduos industriais madeireiros

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Deterioração da madeira de Eucalyptus spp. por fungos xilófagos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Substrates and controlled-release fertilizations on the quality of eucalyptus cuttings

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Genetic variability in progenies of Eucalyptus dunnii Maiden for resistance to Puccinia psidii

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Physiological changes in eucalyptus hybrids under different irrigation regimes

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)