Productivity gains from weed control and fertilization of short-rotation Eucalyptus plantations in the Venezuelan Western Llanos

Carrero, Omar; Stape, José Luiz; Allen, L. D.; Arrevillaga, María Cecilia; Ladeira, Mario

doi:10.1016/j.foreco.2018.07.050

Cited by 13 publications

(12 citation statements)

References 21 publications

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“…The second reason was strongly correlated to the age of the stand. In general, weed control in the eucalyptus plantation was implemented to minimize the competition between weed vegetation and young eucalyptus seedlings (George & Brennan, 2002;Little & Rolando, 2008;Carrero et al, 2018;Little et al, 2018). Therefore, the young plants could absorb water and light optimally for supporting their growth and development.…”

Section: Resultsmentioning

confidence: 99%

“…In order to answer this challenge, most of the forest managers in eucalyptus plantation provide the best strategies to increase stand productivity by implementing the practice of intensive silviculture in their concession forest area, including fertilization, weed control, soil tillage, and tree improvement (Gonçalves et al, 2013). Among those efforts, the practice of fertilization and weed control are common silvicultural prescriptions regularly conducted in every eucalyptus plantation since they have a strong relationship with plant physiology, mainly related to nutrient and water absorption (Carrero et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…an observation unit consisted of a homogenous stand of eucalyptus hybrid. Meanwhile, the previous studies focus on other kinds of eucalyptus stands such as Carrero et al (2018) in E. grandis, E. urophylla, E. hybrid (E. grandis × E. urophylla); Pillai et al (2013) in E. grandis and E. tereticornis; as well as Stone & Birk (2001) in E. dunni. The study site has soil conditions with dominant ultisols.…”

Section: Introductionmentioning

confidence: 99%

“…This soil type has a high clay content of more than 50% (Inail et al, 2019). It is relatively different from other studies about fertilization and weed control in eucalyptus plantation, commonly conducted in sandy soil like Brazil, India, and Australia (Stone & Birk, 2001;Pillai et al, 2013;Carrero et al, 2018). Moreover, we use simple factors to facilitate the forest managers for better understanding the importance of both silvicultural prescriptions with contrast comparison for each treatment.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Interaction of Fertilization and Weed Control Influences on Growth, Biomass, and Carbon in Eucalyptus Hybrid (E. pellita × E. brassiana)

Wirabuana

Sadono

Juniarso³

et al. 2020

jtfm

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Fertilization and weed control are regularly conducted as the main silvicultural prescriptions in the eucalyptus plantation. However, the both treatment's interaction effects on eucalyptus performance are still not deeply understood, even though these treatments require high investment. This circumstance may potentially inhibit the managers in formulating a more efficient maintenance strategy for increasing stand productivity. This study examined the interaction effects of fertilization and weed control on growth, biomass, and carbon storage in eucalyptus hybrid (E. pellita E. brassiana). Results demonstrated that without both treatments, the average stand 3-1-1 volume only reached 37.9 m ha with the mean biomass and carbon storage approached 25.4 and 12.7 Mg ha , 3-1 respectively. In contrast, the use of both treatments simultaneously improved the mean volume around 60.4 m ha-1 with the average biomass and carbon storage closed to 37.6 and 18.8 Mg ha. The development of eucalyptus hybrid 3-1 using fertilization without weed control only gained the mean wood production approximately 58.7 m ha. In 3-1 contrast, weed control application without fertilization only resulted in an average volume of nearly 43.7 m ha. These facts indicated fertilization exhibited more substantial influence than weed control on the performance of eucalyptus hybrid.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Interaction of Fertilization and Weed Control Influences on Growth, Biomass, and Carbon in Eucalyptus Hybrid (E. pellita × E. brassiana)

Wirabuana

Sadono

Juniarso³

et al. 2020

jtfm

View full text Add to dashboard Cite

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“…Forest plantations provide edaphic and microclimatic conditions that benefit the development of weeds in the understory (Vasic et al, 2012). Competition for site resources (water, light, and nutrients) resulting from the presence of understory in early stages of the forest, causes forest productivity loss (Carrero et al, 2018;Rubilar et al, 2018). In late stages, the understory presence results in problems for silviculture treatments, monitoring activities (i.e.…”

Section: Introductionmentioning

confidence: 99%

Monitoring the understory in eucalyptus plantations using airborne laser scanning

Melo

Reis

Martins³

et al. 2021

Sci. agric. (Piracicaba, Braz.)

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In eucalyptus plantations, the presence of understory increases the risk of fires, acts as an obstacle to forest operations, and leads to yield losses due to competition. The objective of this study was to develop an approach to discriminate the presence or absence of understory in eucalyptus plantations based on airborne laser scanning surveys. The bimodal canopy height profile was modeled by two Weibull density functions: one to model the canopy, and other to model the understory. The parameters used as predictor in the logistic model successfully discriminated the presence or absence of understory. The logistic model composed by g canopy , g understory , and g understory showed higher values of accuracy (0.96) and kappa (0.92), which means an adequate classification of presence of understory and absence of understory. Weibull parameters could be used as input in the logistic regression to effectively identify the presence and absence of understory in eucalyptus plantation.

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Effects of weeding and fertilization on soil biology and biochemical processes and tree growth in a mixed stand of Dalbergia odorifera and Santalum album

Zhang

Xue

et al. 2021

J. For. Res.

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In southern China, the eucalyptus plantation industry has been severely restricted by government policy over concerns on negative environmental impacts. In its place, large-scale plantations of high-value tropical tree species such as nitrogen-fixing Dalbergia odorifera and hemiparasite Santalum album have been widely cultivated including in mixed-species plantations. However, despite their poor growth, little information is available on suitable silvicultural practices of these plantations. Therefore, we subjected an 8-year-old mixed stand of D. odorifera and S. album to weeding, fertilization, weeding + fertilization, or no (CK) treatments and measured soil microbial biomass, respiration, nutrients, nitrogen mineralization and leaching and tree growth and litter production. Weeding and fertilization decreased microbial biomass but increased soil respiration, inhibited mineralization, had not effect on leaching of soil nitrogen, and improved the nutrient status of plantation soil. All practices improved the growth of D. odorifera. In the mixed plantation, fertilization increased litter production and nutrient content, but weeding and weeding + fertilization decreased growth of S. album and litter production in mixed plantation because weeding decreased the number of S. album haustoria in underground plant roots. In conclusion, fertilization is recommended; however, weeding-related practices are inappropriate for D. odorifera and S. album mixed plantations. These conclusions have important implications for managing other parasite or mixed-species plantations.

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Productivity gains from weed control and fertilization of short-rotation Eucalyptus plantations in the Venezuelan Western Llanos

Cited by 13 publications

References 21 publications

Interaction of Fertilization and Weed Control Influences on Growth, Biomass, and Carbon in Eucalyptus Hybrid (E. pellita × E. brassiana)

Interaction of Fertilization and Weed Control Influences on Growth, Biomass, and Carbon in Eucalyptus Hybrid (E. pellita × E. brassiana)

Monitoring the understory in eucalyptus plantations using airborne laser scanning

Effects of weeding and fertilization on soil biology and biochemical processes and tree growth in a mixed stand of Dalbergia odorifera and Santalum album

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