{"title":"太多,太快?将早熟玉米品种作为马拉维的抗旱战略","authors":"Uwe Grewer , Dong-Hyuk Kim , Katharina Waha","doi":"10.1016/j.foodpol.2024.102766","DOIUrl":null,"url":null,"abstract":"<div><div>Adopting early-maturing maize varieties can substantially increase yield and yield stability in suitable environments. Actionable recommendations that specify where early-maturing varieties can be suitably applied are lacking across low-income countries. We found for maize in Malawi that varieties with longer maturity duration provide on average the highest yield. However, if water stress occurs, we found that its timing determines which seed variety performs best. If water stress conditions are confined to the late season, early-maturing varieties escape drought and perform better than medium- and late-maturing varieties. Instead, if water stress conditions start already from mid-season, early-maturing varieties perform worst. Our results demonstrate that the typical seasonal timing of water stress can serve as a suitable criterion for recommending where to adopt early-maturing varieties. Finally, we propose an integrated research framework that complements our econometric analysis and allows to derive actionable variety suitability recommendations at the country level.</div></div>","PeriodicalId":321,"journal":{"name":"Food Policy","volume":"129 ","pages":"Article 102766"},"PeriodicalIF":6.8000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Too much, too soon? Early-maturing maize varieties as drought escape strategy in Malawi\",\"authors\":\"Uwe Grewer , Dong-Hyuk Kim , Katharina Waha\",\"doi\":\"10.1016/j.foodpol.2024.102766\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Adopting early-maturing maize varieties can substantially increase yield and yield stability in suitable environments. Actionable recommendations that specify where early-maturing varieties can be suitably applied are lacking across low-income countries. We found for maize in Malawi that varieties with longer maturity duration provide on average the highest yield. However, if water stress occurs, we found that its timing determines which seed variety performs best. If water stress conditions are confined to the late season, early-maturing varieties escape drought and perform better than medium- and late-maturing varieties. Instead, if water stress conditions start already from mid-season, early-maturing varieties perform worst. Our results demonstrate that the typical seasonal timing of water stress can serve as a suitable criterion for recommending where to adopt early-maturing varieties. Finally, we propose an integrated research framework that complements our econometric analysis and allows to derive actionable variety suitability recommendations at the country level.</div></div>\",\"PeriodicalId\":321,\"journal\":{\"name\":\"Food Policy\",\"volume\":\"129 \",\"pages\":\"Article 102766\"},\"PeriodicalIF\":6.8000,\"publicationDate\":\"2024-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Food Policy\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0306919224001775\",\"RegionNum\":1,\"RegionCategory\":\"经济学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"AGRICULTURAL ECONOMICS & POLICY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Food Policy","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0306919224001775","RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURAL ECONOMICS & POLICY","Score":null,"Total":0}
Too much, too soon? Early-maturing maize varieties as drought escape strategy in Malawi
Adopting early-maturing maize varieties can substantially increase yield and yield stability in suitable environments. Actionable recommendations that specify where early-maturing varieties can be suitably applied are lacking across low-income countries. We found for maize in Malawi that varieties with longer maturity duration provide on average the highest yield. However, if water stress occurs, we found that its timing determines which seed variety performs best. If water stress conditions are confined to the late season, early-maturing varieties escape drought and perform better than medium- and late-maturing varieties. Instead, if water stress conditions start already from mid-season, early-maturing varieties perform worst. Our results demonstrate that the typical seasonal timing of water stress can serve as a suitable criterion for recommending where to adopt early-maturing varieties. Finally, we propose an integrated research framework that complements our econometric analysis and allows to derive actionable variety suitability recommendations at the country level.
期刊介绍:
Food Policy is a multidisciplinary journal publishing original research and novel evidence on issues in the formulation, implementation, and evaluation of policies for the food sector in developing, transition, and advanced economies.
Our main focus is on the economic and social aspect of food policy, and we prioritize empirical studies informing international food policy debates. Provided that articles make a clear and explicit contribution to food policy debates of international interest, we consider papers from any of the social sciences. Papers from other disciplines (e.g., law) will be considered only if they provide a key policy contribution, and are written in a style which is accessible to a social science readership.