GROWTH, YIELD, CARBON FIXATION AND ECONOMICS OF RUBBER CULTIVATION IN SRi LANKA

Munasinghe, E. S.

doi:10.31357/fapsphd.2009.00575

Cited by 3 publications

(3 citation statements)

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“…The annual rate of CO 2 sequestered in the genotype RRIC 121 was 116 MTha -1 and 160% greater than that of RRIC 100. (Munasinghe, 2009); with that and also assuming no significant change in leaf area in mature rubber plant, CO 2 sequestered by one hectare of rubber lands during 24 year mature phase could be estimated as 1,296 MT. Obviously, total amount of carbon sequestered by rubber in the country should be greater than this amount if the contribution of immature rubber plantations is taken into consideration.…”

Section: Carbon Sequestration Of Rubbermentioning

confidence: 99%

Carbon sequestration in mature rubber (Hevea brasiliensis Muell. Arg.) plantations with genotypic comparison

Munasinghe

Rodrigo

Karunathilake

2011

J Rubber Res Inst Sri Lanka

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Forests play a vital role in regulating the greenhouse gases, particularly the level of atmospheric CO 2 ; hence planting forests has been identified as one of the main options available to mitigate the effects of climate change. Rubber (Hevea brasiliensis), being a multipurpose tree which provides an economically viable (in terms of both latex and timber production) and socially acceptable system, can be effectively used in participatory tree planting programmes. Although the availability of carbon in rubber trees has been assessed before, the potential capacity of sequestering atmospheric CO 2 in mature rubber trees has not been quantified. Therefore the present study was geared towards this whilst characterizing the genotypic differences in CO 2 sequestration. Two promising genotypes viz. RRIC121 and RRIC100, were selected for the study. CO 2 assimilation rates of rubber leaves in three canopy strata under varying light levels were measured and parameters of photosynthetic light response curves (LRC) were estimated. Leaf area distribution and light attenuation within the canopy were also measured. With previous weather records on incident light, its availability at different canopy levels was estimated using existing ecophysiological models and then the photosynthetic rates at canopy level were estimated. Maximum rate of photosynthesis and quantum yield (photosynthetic efficiency) decreased with the increase in depth of the canopy whilst it was vice versa for the convexity of light response curve. In general, parameters of LRC were superior in RRIC 121 to RRIC 100. Irrespective of the clone, a greater proportion of leaves was found in the top than in the lowest stratum. Leaf area index in RRIC 121 was greater than RRIC 100 with values of 5.88 and 3.47, respectively. Light extinction coefficient was less in RRIC 121 allowing more light to penetrate through the canopy than in RRIC 100. The capability of sequestering atmospheric CO 2 was greater in RRIC 121 than that in RRIC 100 with annual rates of 117 and 45 MTha-1 , respectively. On average, mature rubber is capable of sequestering 81 MT of CO 2 per hectare annually and, within the 24 years of mature phase, 1,296 MT of CO 2 would be sequestered in a hectare of rubber.

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Section: Carbon Sequestration Of Rubbermentioning

confidence: 99%

Carbon sequestration in mature rubber (Hevea brasiliensis Muell. Arg.) plantations with genotypic comparison

Munasinghe

Rodrigo

Karunathilake

2011

J Rubber Res Inst Sri Lanka

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“…There have been many significant changes in the structure of the Sri Lankan economy since the Western colonial powers ruled the country [ 48 ]. According to Munasinghe (2015) [ 74 ], this industrial booming in the colonial period is mainly due to the British change in social structure [ 74 ]. People from villages who were farmers have migrated to the Colombo to work in the harbor, railway, and other factories.…”

Section: Discussionmentioning

confidence: 99%

“…With the entry of women into the economic employment sector, the breastfeeding of toddlers has declined. Reduced lactation periods are associated with poorer nutritional status and increased susceptibility to diseases, including diarrhea and measles in infants and children [ 72 , 73 , 74 , 75 , 76 , 77 , 78 ]. The consequences of the urbanization of Sri Lanka has led to a move away from high-fiber, home-cooked foods towards the consumption of a ready-made, prepared, packaged, and processed foods.…”

Section: Discussionmentioning

confidence: 99%

Nutrition Transition and Traditional Food Cultural Changes in Sri Lanka during Colonization and Post-Colonization

Weerasekara

Withanachchi

Ginigaddara

et al. 2018

Foods

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Sri Lanka was a colony of the Portuguese, Dutch, and British. The simplification of Sri Lankan food culture can be seen most clearly today, including how the diet has been changed in the last 400 years since the colonial occupation began. Therefore, greater efforts must be made to uncover the colonial forces that have undermined food security and health in Sri Lanka. Also traditional eating habits, which are associated with countless health benefits, have been gradually replaced by the globalized food system of multinational corporations and hidden hunger, a system inherent in the emergence of non-communicable diseases, such as cancer, diabetes, cholesterol, and kidney disease epidemics, in Sri Lanka. This article discusses factors that have underpinned the dietary change in Sri Lanka from its early colonization to the post-colonization period. The research followed the integrated concept in ethnological and sociological study approaches. The study examined literature and conducted several interviews with field experts and senior people in marginal areas in Sri Lanka. This study examines the Sri Lankan traditional food system and how it changed after the colonial period, including the main changes and their impact on current micronutrient deficiencies and non-communicable diseases.

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Organic carbon stocks in rubber (Hevea brasiliensis) growing soils of Sri Lanka and strategies to increase: A Review

Dharmakeerthi

2013

J Rubber Res Inst Sri Lanka

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Soil plays a pivotal role in global carbon stocks and climate change due to green house gasses. Atmospheric CO 2 could be sequestered in soils by converting degraded lands into rubber plantations and by adopting better agro-management practices in existing rubber plantations. This study reviews the information available on soil organic carbon (SOC) stocks in rubber growing soils of Sri Lanka and strategies to increase carbon sequestration in rubber plantations. To date, data generated under the SRICANSOL project were the only available information to estimate SOC stocks down to 1 m depth in rubber growing areas in Sri Lanka. Calculations made using that data set revealed that the mean SOC stocks in rubber growing soils of Wet, Intermediate and Dry Zone were 105, 85 and 78 Mg ha -1 , respectively. In mature rubber plantations, SOC stocks had ranged from 40 to 133 Mg ha -1 and this as a proportion of ecosystem C stock could be varied from 25 to 65% depending on the soil depth, type, and agro-management practices. Establishment of rubber based agro-forestry systems using perennial crops that incorporate large quantities of organic matter into soil (e.g. cocoa, banana) is the best land use option to sequester atmospheric CO 2 in rubber growing soils. Erosion control by establishing a good Mucuna bracteata ground cover since land preparation, establishment of deep rooted vetivar grass or gliricidia as hedgerows and mulching with their loppings, return part of the fuelwood back into rubber field as biochar, adopting favourable agricultural practices that increase growth of the rubber plants were among the key strategies to increase SOC stocks in rubber plantations. The information generated here could be useful when drafting a project design document when tapping into carbon markets.

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GROWTH, YIELD, CARBON FIXATION AND ECONOMICS OF RUBBER CULTIVATION IN SRi LANKA

Cited by 3 publications

References 0 publications

Carbon sequestration in mature rubber (<i>Hevea brasiliensis</i> Muell. Arg.) plantations with genotypic comparison

Carbon sequestration in mature rubber (<i>Hevea brasiliensis</i> Muell. Arg.) plantations with genotypic comparison

Nutrition Transition and Traditional Food Cultural Changes in Sri Lanka during Colonization and Post-Colonization

Organic carbon stocks in rubber (<em>Hevea brasiliensis</em>) growing soils of Sri Lanka and strategies to increase: A Review

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