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Economic and Environmental Impact of Rice Blast Pathogen (Magnaporthe oryzae) Alleviation in the United States

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  • Lawton Nalley
  • Francis Tsiboe
  • Alvaro Durand-Morat
  • Aaron Shew
  • Greg Thoma
Abstract
Rice blast (Magnaporthe oryzae) is a key concern in combating global food insecurity given the disease is responsible for approximately 30% of rice production losses globally—the equivalent of feeding 60 million people. These losses increase the global rice price and reduce consumer welfare and food security. Rice is the staple crop for more than half the world’s population so any reduction in rice blast would have substantial beneficial effects on consumer livelihoods. In 2012, researchers in the US began analyzing the feasibility of creating blast-resistant rice through cisgenic breeding. Correspondingly, our study evaluates the changes in producer, consumer, and environmental welfare, if all the rice produced in the Mid-South of the US were blast resistant through a process like cisgenics, using both international trade and environmental assessment modeling. Our results show that US rice producers would gain 69.34 million dollars annually and increase the rice supply to feed an additional one million consumers globally by eliminating blast from production in the Mid-South. These results suggest that blast alleviation could be even more significant in increasing global food security given that the US is a small rice producer by global standards and likely experiences lower losses from blast than other rice-producing countries because of its ongoing investment in production technology and management. Furthermore, results from our detailed life cycle assessment (LCA) show that producing blast-resistant rice has lower environmental (fossil fuel depletion, ecotoxicity, carcinogenics, eutrophication, acidification, global warming potential, and ozone depletion) impacts per unit of rice than non-blast resistant rice production. Our findings suggest that any reduction in blast via breeding will have significantly positive impacts on reducing global food insecurity through increased supply, as well as decreased price and environmental impacts in production.

Suggested Citation

  • Lawton Nalley & Francis Tsiboe & Alvaro Durand-Morat & Aaron Shew & Greg Thoma, 2016. "Economic and Environmental Impact of Rice Blast Pathogen (Magnaporthe oryzae) Alleviation in the United States," PLOS ONE, Public Library of Science, vol. 11(12), pages 1-15, December.
    • Handle: RePEc:plo:pone00:0167295
    DOI: 10.1371/journal.pone.0167295
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    References listed on IDEAS

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    Cited by:

    1. Nalley, Lawton & Tsiboe, Francis & Durand-Morat, Alvaro & Thoma, Greg & Shew, Aaron, 2017. "The Economic Impact of Rice Sheath Blight Alleviation in the Mid‐South," 2017 Annual Meeting, February 4-7, 2017, Mobile, Alabama 251955, Southern Agricultural Economics Association.
    2. Nalley, Lawton Lanier & Massey, Joseph & Durand-Morat, Alvaro & Shew, Aaron & Parajuli, Ranjan & Tsiboe, Francis, 2022. "Comparative economic and environmental assessments of furrow- and flood-irrigated rice production systems," Agricultural Water Management, Elsevier, vol. 274(C).
    3. Shew, Aaron M. & Nalley, Lawton L. & Durand-Morat, Alvaro & Meredith, Kylie & Parajuli, Ranjan & Thoma, Greg & Henry, Christopher G., 2021. "Holistically valuing public investments in agricultural water conservation," Agricultural Water Management, Elsevier, vol. 252(C).
    4. Kenneth R. Szulczyk, 2023. "Estimating the economic costs and mitigation of rice blast infecting the Malaysian paddy fields," SN Business & Economics, Springer, vol. 3(1), pages 1-21, January.
    5. Ni Luh Suriani & Dewa Ngurah Suprapta & Novizar Nazir & Ni Made Susun Parwanayoni & Anak Agung Ketut Darmadi & Desy Andya Dewi & Ni Wayan Sudatri & Ahmad Fudholi & R. Z. Sayyed & Asad Syed & Abdallah , 2020. "A Mixture of Piper Leaves Extracts and Rhizobacteria for Sustainable Plant Growth Promotion and Bio-Control of Blast Pathogen of Organic Bali Rice," Sustainability, MDPI, vol. 12(20), pages 1-18, October.
    6. Aaron M Shew & Alvaro Durand-Morat & Lawton L Nalley & Xin-Gen Zhou & Clemencia Rojas & Greg Thoma, 2019. "Warming increases Bacterial Panicle Blight (Burkholderia glumae) occurrences and impacts on USA rice production," PLOS ONE, Public Library of Science, vol. 14(7), pages 1-18, July.
    7. Linda Ferrari, 2022. "Farmers' attitude toward CRISPR/Cas9: The case of blast resistant rice," Agribusiness, John Wiley & Sons, Ltd., vol. 38(1), pages 175-194, January.
    8. Tsiboe, Francis & Nalley, Lawton Lanier & Durand, Alvaro & Thoma, Greg & Shew, Aaron, 2017. "The Economic and Environmental Benefits of Sheath Blight Resistance in Rice," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 42(2), May.

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