Cut-and-carry for Sustaining Productivity and Carbon Sequestration in Agroforestry Systems: Coffee-Leucaena Example

Youkhana, Adel; Idol, Travis

doi:10.1007/978-981-10-7650-3_22

Cited by 2 publications

(2 citation statements)

References 84 publications

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“…While Giant leucaena variety KX2 had high biomass production (Mullen and Gutteridge 2002), it had one of the highest mimosine concentrations of all varieties tested in this study. In a field experiment conducted in Hawaii by Youkhana and Idol (2016), KX2 plants were pollarded every 6 months and total production was 65 t mulch DM/ha over 3 years. Currently, there are no other data available long-term sustainable production of KX2 harvested regularly for use as forage for stock.…”

Section: Discussionmentioning

confidence: 99%

“…It is resistant to many diseases and pests and can grow in a wide range of environmental conditions, which include drought, eroded slopes and acidic and alkaline soils (Brewbaker 2008(Brewbaker , 2016Honda et al 2018). Although it normally grows as a medium-sized tree, Giant leucaena can be maintained as a bushy shrub for use as an animal fodder by repeated harvesting of its foliage during the year (Figure 1) or by pollarding through a cut-and-carry system (Youkhana and Idol 2018). Giant leucaena produces relatively fewer pods and seeds, but is still able to maintain high yielding properties.…”

Section: Introductionmentioning

confidence: 99%

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A maceration treatment of leucaena foliage improves its nutritional value by reducing mimosine concentration

Honda

Youkhana

Idol

et al. 2022

Trop. grassl.-Forrajes trop.

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Giant leucaena produces high dry matter yields but the foliage contains mimosine, a non-protein amino acid that is toxic to animals, especially non-ruminants. Reducing mimosine concentration in foliage following harvesting may allow for greater use of Giant leucaena and mitigate the negative aspects of higher mimosine concentration in some varieties. We evaluated two methods for post-harvest treatment of foliage of a highly productive interspecific hybrid variety ‘KX2’ for reducing mimosine concentration: (i) maceration treatment; and (ii) extraction with 0.1 N HCl. Mimosine as a percentage of leaf dry matter ranged from less than 1% DM to around 3% DM. Although both methods reduced mimosine concentration, extraction by 0.1 N HCl also reduced gross energy, protein and carbohydrate concentrations of leucaena foliage. The maceration treatment, on the other hand, caused little reduction in crude protein and crude fat concentrations but markedly increased the carbohydrate concentration. ADF and NDF concentrations were also reduced as a result of maceration treatment. The estimated gross energy concentration in macerated foliage was not significantly lower than in unprocessed foliage. A suitable mechanical method for post-harvest maceration of leucaena foliage, e.g. a wood-chipping machine, could be used to reduce mimosine concentration in the foliage, making it safer for feeding to livestock and enhancing the feed value, especially for non-ruminants. These methods should be tested by conducting feeding studies to determine the possible benefits in animal performance from feeding macerated foliage.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A maceration treatment of leucaena foliage improves its nutritional value by reducing mimosine concentration

Honda

Youkhana

Idol

et al. 2022

Trop. grassl.-Forrajes trop.

View full text Add to dashboard Cite

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Leucaena interspecific hybrid ‘KX4-Hawaii’ as a source of agricultural biomass in a water-scarce small island developing state

Belgrave,

Alleyne,

Chandler

et al. 2024

PeerJ

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Background Leucaena leucocephala is a useful multipurpose tree species for agroforestry systems, but traditional seeded cultivars often become weedy and invasive. A seedless hybrid cultivar, ‘KX4-Hawaii’, offers a potential solution to this problem. However, relevant agronomic information and information on the performance of ‘KX4-Hawaii’ under varying growth conditions is required. The goal of this research was to evaluate ‘KX4-Hawaii’ as a source of agricultural biomass in Barbados, a small island developing state with limited arable land. Methods ‘KX4-Hawaii’ air layers were imported into Barbados to create stock trees. Air layering was used to create propagation material and a field study was established with a ‘KX4-Hawaii’ hedgerow planted as a field border. Three plant spacings (50, 75, and 100 cm) were evaluated and data on the growth and biomass yields of the trees were collected at 4-month intervals. Precipitation data were used to investigate climatic effects on ‘KX4-Hawaii’ productivity. Results ‘KX4-Hawaii’ was successfully propagated via air layers and could be planted directly in the field with irrigation. All recorded growth and biomass yields were correlated with precipitation. However, the woody (lignified stems and branches) biomass was more responsive to precipitation than the green (leaves and green tender stems) biomass and made up a large fraction of the total biomass produced. ‘KX4-Hawaii’ was productive even under drought conditions and biomass yields per meter of hedgerow increased with closer spacings. Of the tested spacing treatments, 75 cm was optimum for a 4-month pruning interval under the conditions seen in Barbados as it produced similar yields to the 50 cm spacing treatment but would require less propagation material.

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Cut-and-carry for Sustaining Productivity and Carbon Sequestration in Agroforestry Systems: Coffee-Leucaena Example

Cited by 2 publications

References 84 publications

A maceration treatment of leucaena foliage improves its nutritional value by reducing mimosine concentration

A maceration treatment of leucaena foliage improves its nutritional value by reducing mimosine concentration

Leucaena interspecific hybrid ‘KX4-Hawaii’ as a source of agricultural biomass in a water-scarce small island developing state

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