2021-12-162021-12-16K. Harmsen. (1/12/1984). Nitrogen fertilizer use in rainfed agriculture. Fertilizer research, 5, pp. 371-382.https://hdl.handle.net/20.500.11766/66604Agronomic efficiency (AE) is defined as the increase in economic yield of a crop per unit fertilizer applied. Components of AE are physiological efficiency and apparent recovery fraction. The latter can be further separated into uptake efficiency and availability index. Ways to increase the nitrogen fertilizer use efficiency in rainfed agriculture through fertilizer management are discussed.fertilizer managementdry areasapparent recovery fractionNitrogen fertilizer use in rainfed agricultureJournal ArticleTimeless limited access