Effect of Preplant Irrigation, Nitrogen Fertilizer Application Timing, and Phosphorus and Potassium Fertilization on Winter Wheat Grain Yield and Water Use Efficiency

<table>Average weekly air temperature and fractional water index for Altus, Oklahoma, from the average time of preplant irrigation to the average time of grain harvest for years analyzed. Data obtained from the Oklahoma Mesonet climate monitoring station [<a href="/journals/ija/2014/312416/#B19">31</a>].</table>

International Journal of Agronomy

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Figure 2

Figure 2: Effect of Preplant Irrigation, Nitrogen Fertilizer Application Timing, and Phosphorus and Potassium Fertilization on Winter Wheat Grain Yield and Water Use Efficiency 

Figure 2 | Effect of Preplant Irrigation, Nitrogen Fertilizer Application Timing, and Phosphorus and Potassium Fertilization on Winter Wheat Grain Yield and Water Use Efficiency 