SMALLHOLDER TIMBER PRODUCTION AND MARKETING: THE CASE OF<i>GMELINA ARBOREA</i>IN CLAVERIA, NORTHERN MINDANAO, PHILIPPINES

Magcale-Macandog, Damasa B.; Menz, Kenneth M.; Rocamora, P.M.; Predo, Canesio D.

doi:10.1080/01435698.1999.9752992

Cited by 11 publications

(6 citation statements)

References 2 publications

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“…Our benefit–cost ratios shown in Figure 3 were at the lower end of reported values in the literature of 1.45–2.66 for G. arborea (Bertomeu, 2006; Coomes et al., 2008; Magcale‐Macandog et al., 1999; Mali et al., 2017) but similar to the only reported benefit–cost ratio for S. parahyba that we found in the literature (Schwartz et al., 2017). The main reason for the comparatively low benefit–cost ratios of our plantation, particularly if the subsidy was subtracted, might be the short growth time of only 51 mo, whereas the comparison values from the literature originated from plantations were at least 8 yr old.…”

Section: Resultssupporting

confidence: 84%

“…Magcale‐Macandog et al. (1999) found a benefit–cost ratio of 2.66 when G. arborea was harvested after 8 yr on small‐holder farms, either planted as blocks or hedgerows. A recent study in India reported a benefit–cost ratio of 1.6 for the harvest of a G. arborea in an agroforestry system after 12 yr of growth (Mali et al., 2017), and another study in Panama reported a benefit–cost ratio of 1.72 after 10 yr of growth (Coomes et al., 2008).…”

Section: Resultsmentioning

confidence: 99%

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Biochar amendment did not influence the growth of two tree plantations on nutrient‐depleted Ultisols in the south Ecuadorian Amazon region

Sarango

Manosalvas

Mora

et al. 2021

Soil Science Soc of Amer J

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The literature suggests that biochar increases the fertility of degraded, nutrient-poor tropical soils. We hypothesized that the addition of biochar (a) increases tree growth in two plantations on Ultisols in the south Ecuadorian Amazon region, (b) reduces litterfall during the dry season because the soil remains moister, and (c) improves the benefit-cost ratio of the plantation. We grew two tree species-the native leguminous Schizolobium parahyba var. amazonicum (Ducke) Barneby and the exotic Gmelina arborea Roxb-and used a full factorial split-split-plot design of all treatments for both tree species at each of two sites. The treatments included the amendment of mineral fertilizer plus lime, 3 and 6 t ha -1 biochar, and a control. The plots were replicated three or four times. Tree height (TH), basal diameter (BD), and diameter at breast height (DBH) were measured several times during 51 mo after planting in September 2009 and litterfall during 12 mo (March 2012-February 2013. The site and the mineral fertilizer plus lime treatment had significant effects on TH, BD, and DBH. The amendment of mineral fertilizer plus lime increased TH, BD, and DBH by 47, 43, and 58%, respectively, relative to the control. The litterfall of G. arborea was on average 84% higher than that of S. parahyba. The amendment of biochar did not significantly influence TH, BD, DBH, or litterfall. The benefit-cost ratio of wood production was >1 in the mineral fertilizer plus lime treatment and controls but <1 in the biochar treatments and decreased with increasing addition of biochar. Our results demonstrate that the assumption that biochar can be used to improve the fertility of degraded Amazon soils cannot be generalized.

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Section: Resultssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Biochar amendment did not influence the growth of two tree plantations on nutrient‐depleted Ultisols in the south Ecuadorian Amazon region

Sarango

Manosalvas

Mora

et al. 2021

Soil Science Soc of Amer J

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“…The trees (mostly Gmelina arborea) can be harvested 8-12 years after planting, and farmers then resume annual cropping and begin the next cycle. This system earns more than the traditional practice of monocultural cropping (Magcale-Macandog et al 1997 …”

Section: Conservation Farming Technologies Adopted By Landcare Membersmentioning

confidence: 99%

The Landcare experience in the Philippines: Technical and institutional innovations for conservation farming

Mercado¹,

Patindol²,

Garrity³

2001

Development in Practice

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Sustainable land use is critical for the development of the Philippines uplands, where about 18 million people live. This paper relates our experiences using a participatory approach to develop agroforestry practices and institutions for conservation farming that ensure food security, alleviate poverty, and protect the environment in Claveria, Northern Mindanao, Philippines. We found that natural vegetative strips provide a simple solution to the technical constraints of soil conservation on slopes. These are buffer strips, laid out on the contour, in which natural vegetation is allowed to re-grow into a thick, protective cover. The strips also provide a foundation for developing more complex agroforestry systems including fodder, fruit, and timber trees. The tremendous surge in adoption of these systems has been enhanced by the Landcare approach. Landcare is a movement of farmer-led organisations that share knowledge about sustainable and profitable agriculture on the sloping lands while conserving the natural resources. The Landcare movement is spreading rapidly to many municipalities in Mindanao and Visayan islands.

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“…A shortage of local forest resources is often the catalyst of spontaneous expansion of smallholder agroforestry systems. This type of farmer-led spontaneous smallholder agroforestry development has occurred in many countries including Bangladesh (Byron 1984), Sri Lanka (Gunasena 1999), Philippines (FAO 1998;Magcale-Macandog et al 1999), Kenya (Scherr 1995;Place et al 2002) and Indonesia (Michon and Bompard 1987). With the expansion of areas under forest protection, bans on logging and restriction of access to natural forests in countries like Indonesia, Philippines and Thailand, smallholders have found alternative sources of tree products and ways of integrating trees into their farming systems through on-farm tree growing and forestry plantations (Snelder and Lasco 2008).…”

Section: Introductionmentioning

confidence: 99%

An Assessment of Farm Timber Value Chains in Mount Kenya area: The Application of the “Filiere” Approach to Small and Medium Scale Farm Timber Businesses

Anyonge¹,

Franzel²,

Njuguna³

et al. 2011

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SMALLHOLDER TIMBER PRODUCTION AND MARKETING: THE CASE OFGMELINA ARBOREAIN CLAVERIA, NORTHERN MINDANAO, PHILIPPINES

Cited by 11 publications

References 2 publications

Biochar amendment did not influence the growth of two tree plantations on nutrient‐depleted Ultisols in the south Ecuadorian Amazon region

Biochar amendment did not influence the growth of two tree plantations on nutrient‐depleted Ultisols in the south Ecuadorian Amazon region

The Landcare experience in the Philippines: Technical and institutional innovations for conservation farming

An Assessment of Farm Timber Value Chains in Mount Kenya area: The Application of the “Filiere” Approach to Small and Medium Scale Farm Timber Businesses

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