Genetic Gain in Wheat Grain Yield and Nitrogen Use Efficiency at Different Nitrogen Levels in an Irrigated Hot Environment

<div>Relationship of harvest index (%) of 11 bread wheat cultivars released between 1960 and 2006 and grown at four N levels with the time elapsed since their year of release.</div>

International Journal of Agronomy

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Figure 3

Figure 3: Genetic Gain in Wheat Grain Yield and Nitrogen Use Efficiency at Different Nitrogen Levels in an Irrigated Hot Environment 