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projects involving a feasibility study on a rice straw combustion plant using organic
rankine cycle technology (2013–2014) and rice straw bioenergy (2013–2016).
Based on this initial work, a BMZ-funded project was implemented during
2016–2018 on Scalable straw management options for improved farmer livelihoods, sustainability, and low environmental footprint in rice-based production systems. Its objectives were to (1) identify, develop, and verify technologies and
business models for sustainable rice straw management; (2) conduct market studies
on existing and potential rice straw product markets; (3) establish data on GHG
emissions from different rice straw management and processing practices; (4) determine environmental footprints using life cycle assessment (LCA); and (5) formulate
policy recommendations for communicating to policy makers.
This book summarizes, in part, the outputs of the above-mentioned projects by
IRRI and its national agricultural research and extension partners in Vietnam and
the Philippines. It also includes complementary contributions from other experts on
selected topics that were not covered by the IRRI projects. The book is aimed at
engineers and researchers interested in current good practices and the gaps and constraints that require further research and innovation.
By no means an end in itself, this book provides an overview of research activities on straw management in the two countries. It basically provides a snapshot of
what we know and have learned through to the completion of the workshops and
projects during 2012–2018. This accumulated information can be used to help farmers and extension workers decide on the best alternative straw management options
by presenting technological options, as well as the value chains and business models
required to make them work. Finally, the book provides research-based evidence
that may guide policy makers in South and Southeast Asia—required by the public
to reduce GHG emissions and air pollution—to develop and implement appropriate
policies. See the table of contents for the list of topics in the 11 chapters. More
research is needed on (1) the long-term effects on soil fertility, (2) the effects on the
environment and health caused by changed on-field rice straw management, (3)
more complex rice straw products with more value-adding potential, (4) secondgeneration bio fuels and bio refineries, (5) and the sustainability of the various
options. In addition, research studies that focus on the trade-offs and synergies of
different straw management options remain pertinent.
Los Baños, Laguna, Philippines
Martin Gummert
Los Baños, Laguna, Philippines
Nguyen Van Hung
Los Baños, Laguna, Philippines
Pauline Chivenge
Westport, Mayo, Ireland
Boru Douthwaite
Preface
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