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ARS Home » Southeast Area » Stuttgart, Arkansas » Dale Bumpers National Rice Research Center » Research » Publications at this Location » Publication #418768
Research Project: Broadening and Strengthening the Genetic Base of Rice for Adaptation to a Changing Climate, Crop Production Systems, and Markets

Location: Dale Bumpers National Rice Research Center

Title: Impacts of multiple dry downs on rice yield, processing grain quality traits and greenhouse gases

Author
item JIA, YULIN
item Reba, Michele
item PINSON, SHANNON
item ROHILA, JAI
item Rivers, Adam
item Adviento-Borbe, Arlene
item YAMAGUCHI, NORIKO - National Agriculture And Food Research Organization (NARO), Agricultrual Research Center
item ITO, KOJI - National Agriculture And Food Research Organization (NARO), Agricultrual Research Center
item KURAMATA, MASATO - National Agriculture And Food Research Organization (NARO), Agricultrual Research Center
item SUDA, AOMI - National Agriculture And Food Research Organization (NARO), Agricultrual Research Center
item BABA, KOJI - National Agriculture And Food Research Organization (NARO), Agricultrual Research Center
item TOKIDA, TAKESHI - National Agriculture And Food Research Organization (NARO), Agricultrual Research Center
item HOMMA, TOSHIMITSU - Niigata University
item NAKADA, HITOSHI - Toyama University
item MINAMIKAWA, KAZUNORI - Japan International Cooperation Agency (JICA)

Submitted to: Meeting Abstract
Publication Type: Proceedings
Publication Acceptance Date: 10/1/2024
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Achieving the Paris Agreement target of limiting average temperature increase to 1.5°C compared to pre-industrial times is considered necessary to achieve carbon neutrality by 2050. The Global Methane Pledge also aims to reduce global methane emissions by 30% from 2020 levels by 2030. The cropping systems in agricultural sector, therefore, need to significantly reduce methane emissions from rice paddies, one of its largest sources. On the other hand, reduction of arsenic, a toxic metal found in rice, the staple food of half the world's population, is important for human health. These reduction measures have been studied and developed separately, but simultaneous reduction of both the issues has not been fully explored. In the present study, technologies to simultaneously reduce paddy methane and brown rice inorganic arsenic concentrations while maintaining productivity under different growing environments in Japan, the US, and Vietnam are being developed. Analysis of two-year data from the US show that multiple short drains might be helpful and comparative impacts of multiple dry downs (AWD), single dry down (MSD) and no dry down (FLD) on rice yield, milling and grain qualities is also being evaluated. Additional analysis revealed that the AWD did not increase grain Cd levels when compared with FLD management in brown rice. The results show the importance of water management practices in keeping heavy metals such as As and Cd under check for improved grain qualities in rice. Impact of AWD and MSD on greenhouse gas emissions have been analyzed and results will be presented.