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Governments of West African countries try to enhance rice production to cope with the increasing demand. Inland valley lowlands constitute a huge potential for rice production. Based on large-scale field surveys around two big inland markets in C\u00f4te d\u2019Ivoire (Bouak\u00e9) and Ghana (Kumasi), this paper explores factors affecting the expansion, intensification and sustainability of lowland rice production. We randomly selected villages that have one or more lowlands within the village territory. The number of villages selected was 157 around Bouak\u00e9 and 60 around Kumasi. We identified 317 lowlands in the Bouak\u00e9 sample villages and 188 lowlands in the Kumasi sample villages. About 83% of Bouak\u00e9 lowlands were used at least once for rice cultivation, and 37% of total lowlands were under rice cultivation at the time of study. Corresponding figures for Kumasi were 85% and 57%. Multiple regression analyses revealed that market accessibility and population pressure increased the probability of lowland utilization in the Bouak\u00e9 area, whereas they had no significant effect in the Kumasi area. In the Kumasi area, on the other hand, immigrant population positively influenced the use of lowlands. Water control is an important technology for intensification of lowland rice production. In the Kumasi area rice cultivation is purely rainfed, but lowlands located closer to Bouak\u00e9 tend to be equipped with bunds and canals. Bund and canal construction was found to be influenced positively by market accessibility and number of immigrants. The adoption of water control technologies enhanced the sustainability of lowland rice cultivation. Dominant ethnic groups are Baoul\u00e9 in Bouak\u00e9 and Ashanti in Kumasi, both of which belong to the Akan language group that shares similar cultural heritage. For them rice is not a traditional crop. Usually, migrants from the Savanna zone are cultivating rice in lowlands because they are familiar with lowland rice production and they are sometimes not allowed to use upland fields. Hence we would attribute the differences in rice cultivation methods to the higher relative price of land in the Bouak\u00e9 area as well as past governmental and/or foreign intervention. Particularly modern irrigation projects around Bouak\u00e9 (which are excluded from our analyses) may have had spill-over effects of technologies. In addition, we hypothesize that the land tenure systems in the Kumasi area are discouraging migrant tenant cultivators to make a long-term investment in lowlands.", "subitem_description_type": "Abstract"}]}, "item_9_description_5": {"attribute_name": "\u5185\u5bb9\u8a18\u8ff0", "attribute_value_mlt": [{"subitem_description": "The proceedings included herein are the papers presented in the Seventh ICCAE Open Forum held in October 20th, 2006 at Nagoya University, Japan.", "subitem_description_type": "Other"}]}, "item_9_identifier_60": {"attribute_name": "URI", "attribute_value_mlt": [{"subitem_identifier_type": "URI", "subitem_identifier_uri": "http://iccae.agr.nagoya-u.ac.jp/publication/bulletin/bulletin1.html"}, {"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/2237/17621"}]}, "item_9_identifier_registration": {"attribute_name": "ID\u767b\u9332", "attribute_value_mlt": [{"subitem_identifier_reg_text": "10.18999/jouica.8.201", 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