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Nitrogen efficiency in wheat under rainfed Mediterranean conditions as affected by split nitrogen application.[J].Luis López-Bellido;Rafael J. López-Bellido;Ramón Redondo.Field Crops Research.2004, 1
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Grain yield; nitrogen-use efficiency and baking quality of old and modern Italian bread-wheat cultivars grown at different nitrogen levels.[J].Giovanni Guarda;Silvano Padovan;Giovanni Delogu.European Journal of Agronomy.2003, 2

