Nutrient Cycling in Corymbia citriodora in the State of Rio de Janeiro, Brazil

Cunha, Gláucio Mello; Gama-Rodrigues, Antônio Carlos; Gama-Rodrigues, Emanuela Forestieri; Moreira, Gisele Rodrigues

doi:10.1590/2179-8087.020417

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…At 24 months, no response to potassium fertilization was observed, suggesting a higher nutrient requirement in the initial growth phase. According to Cunha et al (2019), the cycling of nutrients N, P, K Ca, and Mg in long rotation C. citriodora planting is important in maintaining forest productivity. Smith et al (2009) compared the effects of Ca 2+ fertilization on calcium concentration in Picea rubens wood at two sites with different initial levels of Ca 2+ in the soil.…”

Section: Mean Annual Incrementmentioning

confidence: 99%

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

Vieira

Amorim

Correa

et al. 2021

RSD

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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.

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Section: Mean Annual Incrementmentioning

confidence: 99%

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

Vieira

Amorim

Correa

et al. 2021

RSD

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“…Originating in Australia, C. citriodora stands out for its economic value in the production of wood for various purposes, such as in the manufacture of furniture, firewood and charcoal. It is highly sought-after in light and heavy civil construction, in addition to presenting medicinal properties (CUNHA et al, 2019). The tree species is cultivated in more than 90 countries (CABI, 2015).…”

Section: ________________________________________________________________________________ Introductionmentioning

confidence: 99%

Germination of Corymbia citriodora on different substracts

Hartmann¹,

Colleges²,

Marques³

2021

Rev Agr Acad

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The objective of the present work was to evaluate the germination of lemon-scented gum (Corymbia citriodora) on different substrates. The following were tested: 1) commercial substrate, 2) sand, 3) sand + coconut fiber (2: 1), 4) coconut fiber, 5) substrate + coconut fiber (2: 1), 6) sand + substrate (2: 1) and the control treatment (germitest paper). Based on the experiment, it was observed that germination varied between 57 and 74%, although there was no significant difference between treatments. The treatments that led to a higher germination speed were the control (germitest paper), followed by the commercial substrate, coconut fiber, sand + substrate and substrate + fiber, with no significant difference, indicating that they are the best for the germination of C. citriodora seeds. The substrate based on coconut fiber is promising, as it can be considered an alternative and low-cost substrate.

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“…Originating in Australia, C. citriodora stands out for its economic value in the production of wood for various purposes, such as furniture, firewood and charcoal. It is highly sought-after in light and heavy civil construction, in addition to presenting medicinal properties (Cunha et al 2019).…”

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confidence: 99%

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Fonseca¹,

Marques²

2021

J. Res. Weed Sci.

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Weeds have developed skills to compete with cultivated plants, making the former a major problem in agricultural areas. Morning glory (Ipomoea purpurea) is an important invasive plant that, in addition to competing for nutrients, makes harvesting difficult and presents seed dormancy mechanisms in soil banks. Some plants in this group have already been reported to be tolerant or resistant to herbicides. Therefore, it is necessary to seek alternative methods of management for these plants. The present study aimed to evaluate the influence of four extracts of lemon-scented gum (Corymbia citriodora) on the germination of morning glory seeds. Extracts were obtained from infusion, crushing, boiling and the alcoholic extract of the leaves. The experiment was carried out in gerboxes, containing three sheets of paper, with four repetitions of fifty seeds in each and in a completely randomized design. The germinated seeds were examined daily, until they all emitted the radicle. At the end of the experiment, it was understood that the alcoholic extract was the one that stood out the most, as it led to the delay and reduction in the germination rate of morning glory seeds by up to 2.22 days and 38.5% fewer seeds germinated, respectively. Extracts obtained by infusion and aqueous extracts also delayed germination with a significant difference. None of the extracts advanced germination. The results are promising in the sense that the allelopathy exerted by lemon-scented gum extracts can help to manage banks of morning glory seeds in the soil, delaying and reducing their germination.

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Nutrient Cycling in Corymbia citriodora in the State of Rio de Janeiro, Brazil

Cited by 7 publications

References 19 publications

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

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

Germination of Corymbia citriodora on different substracts

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