"Africa rice farming system"
Development of sustainable rice cultivation and food production system in Africa
Sub-Saharan Africa is the world's most food insecure region, with one in four people chronically hungry. In order to secure a stable supply of food for the region and achieve the eradication of hunger set forth in the SDGs, food production technology that can adapt to the increasingly unstable growing environment and effectively utilize limited resources such as water and nutrients is required. To this end, we will create new technologies and knowledge that will lead to increased production of rice, a key crop in the region, and improved nutrition for the people, with the aim of building a sustainable food production system centered on rice cultivation.
Develop new technologies and knowledge that will lead to a sustainable and nutrition-sensitive food production system centered on rice by integrating water management technologies, breeding materials and cultivation technologies, and to provide them to the target countries.
- Elucidation of the potential of paddy rice cultivation in Africa and development of technology to maximize output
- Development of breeding materials for rice and vegetables that contribute to increased food production and improved nutrition in Africa
- Development and impact assessment of cultivation technologies and production systems with excellent resource utilization that lead to improved nutrition and higher income
Madagascar, Tanzania, Guinea
Research institutes in target countries, extension organizations (members), research institutes in other countries, international research institutes, international development projects
TSUJIMOTO Yasuhiro (Crop, Livestock and Environment Division)
The research results of JIRCAS were exhibited at the "Agribusiness Creation Fair 2023" organized by the Ministry of Agriculture, Forestry and Fisheries (MAFF) and held at Tokyo Big Sight, South Hall 2 from November 20 to 22, 2023.
On November 9, 2023, a group of ten first-year students of the Master of Science program and one professor from the Department of Global Agricultural Sciences, Graduate School of Agricultural and Life Sciences of the University of Tokyo visited JIRCAS.
Dr. TSUJIMOTO Yasuhiro, Project Leader of the “Africa rice farming system” project, and colleagues from the Crop, Livestock and Environment Division received the 20th Japanese Society of Crop Science Best Paper Award for the paper titled "AZ-97 (Oryza sativa ssp. Indica) exhibits superior biomass production by maintaining the tiller numbers, leaf width, and leaf elongation rate under phosphorus deficiency".
Vision Center Hibiya (Room 301 – Up to 40) + Webex(Hibiya Marine Building 3rd floor, 1-5-1 Yurakucho, Chiyoda-ku, Tokyo 100-0006)
Phosphorus, one of the three main plant nutrients, is closely linked to plant growth and yield. It is therefore essential to provide plants with sufficient phosphorus. However, many agricultural areas around the world are deficient in phosphorus, and in developing regions such as Africa, economic constraints make it difficult to purchase enough fertilizer. As a result, crops often suffer from chronic phosphorus deficiency. Through genetic analysis of two rice varieties with contrasting root shapes, JIRCAS has discovered genetic loci that control lateral root development and the number of crown roots in rice, and has shown that these genes play a role in increasing phosphorus uptake by plants in phosphorus-deficient fields. The results of this research are expected to lead to improved rice yields in developing regions where phosphorus deficiency is widespread, and to reduced fertilizer application as a result of improved phosphorus use efficiency in rice.
Pick UpSoils have a unique property called "phosphorus (P) retention capacity," which refers to their ability to bind with phosphates. When soil has a high P retention capacity, the P fertilizer applied in a cropland may bind to the soil before being absorbed by crops. This reduces the efficiency of fertilization. Therefore, P retention capacity is used for fertilization management. Recent studies have shown a close relationship between P retention capacity and soil moisture content. A research team from JIRCAS and the University of Antananarivo in Madagascar used this relationship to develop a method that accurately and easily estimates P retention capacity from soil moisture content, including a clever use of table salt (sodium chloride).
One component of food security is stability, and seasonality is a major factor affecting food security, especially for smallholder farmers in developing regions. Even if food is available immediately after harvest, it may not be available before the harvest season.