The influence of tree improvement and cultural practices on the productivity of<i>Eucalyptus</i>plantations in temperate South Africa

Boreham, GR; Pallett, RN

doi:10.2989/sf.2009.71.2.1.816

Cited by 15 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The benefits of improved genetic material are well known (Midgley 2006), but the management of improved material to obtain maximum gains has not been fully elucidated in tropical acacias. Boreham and Pallett (2009) also found a lack of interaction between plantation management and eucalypt planting material, and concluded that the effects were mainly additive across five sites in South Africa. In contrast, Roth et al (2007) found a significantly different response between two contrasting Pinus taeda provenances in southern USA to nutrient treatment after 13 years of sustained nutrient addition, but the differences were minor compared to the highly significant main effects of nutrition and family.…”

Section: Discussionmentioning

confidence: 96%

Nutrient management of contrasting Acacia mangium genotypes and weed management strategies in South Sumatra, Indonesia

Mendham

Hardiyanto

Wicaksono

et al. 2017

Australian Forestry

View full text Add to dashboard Cite

Tropical plantations are an important source of forest products both to meet the growing demand for wood, and to facilitate the transition from native forests to more sustainably produced forest resources. Management of these plantations for optimal productivity and resource-use efficiency is vitally important, and nutrient management is a critical component of sustainable plantation production. In this study, we explored the response of Acacia mangium plantations in South Sumatra, Indonesia, to fertiliser and their requirement for fertiliser, focusing on phosphorus (P) at establishment. Almost all plantations across a series of 11 sites were highly responsive to P fertiliser, with nine of the 11 sites having more than double the productivity in P-fertilised treatments at age 1 year compared with control treatments. However, the quantity of P required for 90% of maximum growth was generally low by age 2 or 3 years, and 10 kg P ha -1 at establishment was sufficient to ensure that at least 90% of maximum growth was captured across all the experimental sites. At a 12 th site, we explored the interactions between genotype and weed control, and found that both effects were additive in the response of the plantations to P, and thus there was no substitutability between management types: weed control, genotype and P needed to be managed in combination to achieve maximum productivity. ARTICLE HISTORY

show abstract

Section: Discussionmentioning

confidence: 96%

Nutrient management of contrasting Acacia mangium genotypes and weed management strategies in South Sumatra, Indonesia

Mendham

Hardiyanto

Wicaksono

et al. 2017

Australian Forestry

View full text Add to dashboard Cite

show abstract

“…An operational gain trial series was established across five sites within the temperate areas of KwaZulu Natal in South Africa to increase the level of understanding of the interaction of these cultural practices together with genetically improved material on a range of sites for species other than E. grandis (Boreham and Pallett, 2007). A 2 4 factorial design (randomised complete block) with two replications was established at each of the five trial sites, where the main factors tested at each site were species selection, genetic improvement, silvicultural intensity and planting density.…”

Section: The Additive Nature Of Genetic Tree Improvement and Several mentioning

confidence: 99%

“…Reproduced from Southern Forests 2009, 71(2):91 and used with permission of NISC (Pty) Ltd.Fig.9. Changes in relative influence to productivity gains over time for all the main factors in a Eucalyptus operational gain trail series (afterBoreham and Pallett, 2007).…”

mentioning

confidence: 99%

Intensive, site-specific silviculture: Manipulating resource availability at establishment for improved stand productivity. A review of South African research

Toit

Smith

Little

et al. 2010

Forest Ecology and Management

View full text Add to dashboard Cite

“…According to , plant growth is a function of resource supply and the efficient use of resources to produce specific plant components, such as wood. Relative growth responses, matched with appropriate genotype selection and a suitable site, potentially enable increased eucalyptus productivity and facilitate high stocking at full rotation (Boreham and Pallett 2009). A key driver of forest growth rates is leaf area, and its interaction with environmental conditions largely determines stem growth (Du Toit and Dovey 2005;Laclau et al 2008;Smethurst et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Differences in early seasonal growth efficiency and productivity of eucalyptus genotypes

et al. 2021

View full text Add to dashboard Cite

Understanding the changes in early growth efficiency (GE, growth/leaf area) may improve forest production through the selection of appropriate genotypes at early stages. We investigated different early growth responses of genotypes of Eucalyptus globulus (7), E. nitens (3), and E. nitens × E globulus (E. gloni) (7) in south-central Chile. To evaluate seasonal growth, plants of each genotype were established in a completely randomized block design in coarse sandy soil (i.e., low water holding capacity), with spring and summer irrigation. The current monthly increment (CMI) in wood volume (cm 3 tree −1 month −1 ), and leaf area index (LAI, m 2 m −2 ) were used to calculate GE at 4.1, 7.5, 10.4, 13.4, and 15.4 months of age, corresponding to five growing seasons (first summer, fall, winter, spring, and second summer). The interaction between genotype and season had a significant effect (p < 0.001) on LAI and GE, but not on CMI. In general, CMI values declined in winter, but increased greatly in the second summer. LAI values were stable during the first three seasons, increased in spring, and peaked in the second summer. During all seasons, a significant (p < 0.001) relationship between growth and LAI was observed, with differences in model coefficients among taxa. The highest GEs were observed mainly for E. globulus, which grew with small changes in the LAI. In general, our findings showed that eucalyptus genotypes with higher annual GEs presented higher seasonal GEs, except for some E. globulus genotypes. Changes in seasonal GEs among genotypes suggest that the same environment drives a significant response in the early growth stage as a consequence of climate influences on carbon allocation among different eucalyptus genotypes.

show abstract

The influence of tree improvement and cultural practices on the productivity ofEucalyptusplantations in temperate South Africa

Cited by 15 publications

References 19 publications

Nutrient management of contrasting Acacia mangium genotypes and weed management strategies in South Sumatra, Indonesia

Nutrient management of contrasting Acacia mangium genotypes and weed management strategies in South Sumatra, Indonesia

Intensive, site-specific silviculture: Manipulating resource availability at establishment for improved stand productivity. A review of South African research

Differences in early seasonal growth efficiency and productivity of eucalyptus genotypes

Contact Info

Product

Resources

About