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    Science is answer to debate on
    jatropha as biofuels feedstock
     

    The prospects of supply depletion, irreversible price increase on fossil fuels and the threats of harmful gasoline additives or oxygenates compelled the Philippines to embark on a policy decision through the Biofuels Act 2006.

    The biofuels law is paving the way for the search for feedstocks to support the biofuels industry.

    Identified as potential sources of feedstocks are coconut and jatropha for biodiesel, while sugar cane, cassava and sweet sorghum are the prospective crops for bioethanol. Considering that these crops are embedded in the agricultural food-production systems, any arable land displacement to give way to feedstock production triggers an issue on priority: food or energy security.

    The Philippine government is giving high priority on jatropha as feedstock for biodiesel compared with other locally produced biodiesel sources.

    Jatropha (Jatropha curcas L.), locally known as tubang bakod, was found to exhibit more potential as an alternative to high-valued products. Hence, a subprogram under the National Biofuels Program (NBP) on jatropha for biodiesel production was initiated by the Philippine Council for Agriculture, Forestry and Natural Resources Research an Development (Pcarrd).

    The subprogram on jatropha, which focused on the agriculture component of feedstock production, has project components, namely, 1) germplasm management, varietal improvement and seed technology; 2) development of component technologies in various production systems; 3) development of farming-system models integrating it in various production systems; 4) development of postproduction machinery; and 5) process and equipment development for the production of esterified jatropha oil.

    With full financial support from the Department of Science and Technology (DOST) and the Philippine National Oil Co.-Alternative Fuels Corp. (PNOC-AFC), the subprogram started its implementation in July 2007.

    The University of the Philippines Los Baños (UPLB), DOST, PNOC-AFC and Pcarrd Research, Development and Extension (RDE) Team hopes to deliver the culture and management of jatropha as feedstock for biodiesel production under the Philippine setting within the next three years.

    The research and development (R&D)-based integrated jatropha program is envisioned to provide a package of appropriate field-tested production and management technology that considers the Philippine environmental and social milieu to support and sustain an emerging biofuels industry in the country.

    At present, R&D data are still being generated, thus, the viability of jatropha production under local conditions cannot be compared.

    While there were many reported plantation developments undertaken by the private sector, still the science-based information and technologies need to be completed and firmed up before jatropha can safely be recommended for massive domestication preferably in areas where food crops are not cultivated.

    However, as a tropical country, researchers are confident that yield per hectare (under same level of management) will be higher than the countries from South Asia.

    Likewise, the viability of existing commercial plantations linked with small-hold farms will be assessed and improved for viable feedstock production. Moreover, appropriate pest-and-disease-management schemes must be ensured in the likelihood of pest and disease incidence as an offshoot of massive plantation development.

    To date, 25 jatropha genotypes, from the germplasm collection nationwide, were initially selected and established at the UPLB Central Experiment Station for the program’s varietal improvement activities.

    Earlier in 2006 the Commission on Higher Education has already tapped 17 state colleges and universities to engage in nursery and plantation development of jatropha. The activity aimed to produce good-quality planting materials and maintain a collection of local germplasm in the plantation.

    Pcarrd stand

    While Pcarrd has already supported initiatives toward the production of possible biofuels feedstock since 2005, it remains firm on its stand that “neither food nor energy will be compromised.”

    Together with the science and technology (S&T) community, Pcarrd continuously strives to strike a balance between food and energy security. As such, in the Pcarrd-coordinated crafting of the NBP by key stakeholders from the agriculture, forestry and environment sectors, it was emphasized that the areas targeted in the NBP implementation are those that are not used for the cultivation of food crops.

    Incidentally, NBP’s R&D component is composed of two subprograms: the utilization of jatropha for biodiesel production and R&D program on sweet sorghum for bioethanol production.

    Priority areas targeted for jatropha planting are the marginal areas where food crops (including sweet sorghum) are not cultivated or cannot be cultivated. This includes degraded grasslands, denuded uplands, lahar-affected areas and mined waste areas.

    The program’s R&D components hope to provide the appropriate technology mix for jatropha’s improved growth and yield performance on these areas. Production systems that integrate jatropha in agroforestry and agricultural systems, such as in coconut and hilly lands, are also being explored.

    For sweet sorghum, areas considered are those where rice, corn and sugar cannot be productive because of limited irrigation water. Sweet sorghum is, likewise, a potential dry-season crop in rain-fed rice areas, thus, it can be planted in these areas after the wet-season rice crop.

    The NBP hopes to provide S&T interventions that are consistent with the Philippines’ Energy Plan, as well as science-based production and postproduction information and technologies supportive to the S&T Agenda.

    The food-for-fuel issue should, after all, be viewed from the perspective of science.

    While the pursuit for food security is a foremost and legitimate concern, which can be achieved by maintaining the cultivation frontiers for food crops and allocating resources to meet the country’s food requirements, Pcarrd will not also discount efforts to address the country’s increasing energy demands.

    Toward this goal, the council adheres to its stand that biofuel crops should be developed or concentrated in agroecosystems where they can best perform, without compromising the country’s food requirements.

    Pcarrd, likewise, recognizes the need to address the plight of marginalized farmers through benefits from alternative employment and income opportunities emanating from the biofuel revolution.  (Faustina C. Baradas and Carina P. Virtucio/DOST S&T Media Service)

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