1. Cooperation, Public Relations
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  3. 2023

研究成果

P-dipping Rice Fertilizer Application Technique is Effective in Avoiding Flood Damage
― Contributes to stable and sustainable rice production in Sub-Saharan Africa―

Related Research Program
Food
Related Research Project
SATREPS Madagascar
press202307.pdf875.35 KB

 

P-dipping Rice Fertilizer Application Technique is Effective in Avoiding Flood Damage
― Contributes to stable and sustainable rice production in Sub-Saharan Africa ―

Main Points

  • The effectiveness of P-dipping, in which mud mixed with a small amount of phosphorus fertilizer is adhered to the seedling roots before transplanting, has been demonstrated for lowland rice production in a number of farmers' fields in Madagascar.
  • P-dipping not only increases rice yields with less fertilizer, but also prevents damage from flooding in the early stages of growth.
  • P-dipping contributes to rice production in sub-Saharan Africa, which is affected by a recent fertilizer price surge and weather extremes caused by climate change.

Overview

　

The effect of P-dipping, a localized fertilzier application technique for lowland rice production, was tested in farmers' fields under different climatic and topographical conditions in Madagascar, in collaboration with the National Center for Applied Research on Rural Development (FOFIFA) of Madagascar and the Radio-isotope Laboratory of the University of Antananarivo. The results showed that the technology not only significantly improved fertilizer use efficiency, but was also effective in avoiding damage due to flooding that occurs in the early stages of growth.

Rising international fertilizer prices and more frequent extreme weather events associated with climate change are making agricultural production more difficult for poor farmers with low purchasing power and weak production infrastructure, including those in Madagascar.

The results of this study show that P-dipping has the potential to improve fertilizer use efficiency and help farmers cope with frequent flooding. The technology is expected to contribute to stable and sustainable rice production in sub-Saharan Africa as its use expands.

These research results were published in the online edition of the European Journal of Agronomy, an international scientific journal, on July 20, 2023 (Japan time).

 

 

P-dipping is a simple technique in which mud mixed with a small amount of phosphorus fertilizer is adhered to the seedling roots before transplanting.

Publication

Authors
Aung Zaw Oo, Yasuhiro Tsujimoto, Njato Mickaël Rakotoarisoa, Bruce Haja Andrianary 
Title
Localized phosphorus application via P-dipping doubles applied P use efficiency and avoids weather-induced stresses for rice production on P-deficient lowlands
Journal
European Journal of Agronomy
DOI : https://doi.org/10.1016/j.eja.2023.126901

For Inquiries

JIRCAS President　KOYAMA Osamu

Program Director：
NAKASHIMA Kazuo (Food Program)
Principal Investigators：
TSUJIMOTO Yasuhiro (Crop, Livestock and Environment Division),
Aung Zaw OO (Crop, Livestock and Environment Division)
Press Coordinator：
OMORI Keisuke (Head, Information and Public Relations Office)
E-mail：koho-jircas@ml.affrc.go.jp

Japan Science and Technology Agency (JST)

Business Coordinator：
Department of International Affairs
E-mail：global@jst.go.jp
Press Coordinator：
Public Relations Office
E-mail：jstkoho@jst.go.jp

Japan International Cooperation Agency (JICA)

Coordinator：
Agriculture and Rural Development Group II
Economic Development Department
E-mail：edga2@jica.go.jp

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