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Corn Fertility Study
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Soil samples were taken before fertilizer application and planting. For phosphorus, soil samples were analyzed after extraction with water, Mehlich 3, TAMU, and a new extractant, which is under development at our lab. TAMU and Mehlich 3 indicated that no P fertilizer was necessary; however, the new extractant indicated that corn would respond to a P addition. Due to the lack of rain, the yields are down from last year's harvest. The following are the results:

Corn Yields

yield 52 bu/ac Increasing nitrogen rate:

Increasing phosphorus rate:

Please send comments and/or questions to:
Rick L. Haney
Soil Scientist
Grassland Soil & Water Res. Lab808 E. Blackland RoadTemple, TX 76502