110-6 Managing Phosphorous for Corn Production in On Farm Studies.

Poster Number 1009

See more from this Division: S04 Soil Fertility & Plant Nutrition
See more from this Session: Phosphorus and Potassium Management: I
Monday, November 1, 2010
Long Beach Convention Center, Exhibit Hall BC, Lower Level
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Dennis Coker, Texas Agrilife Extension Service, College Station, TX, Mark McFarland, Texas AgriLife Extension Service, College Station, TX, Tony Provin, Soil and Crop Sciences, Texas AgriLife Extension Service, College Station, TX, Dennis Pietsch, Texas AgriLife Research, College Station, TX and Juerg Blumenthal, 351C Heep Center, Texas A&M University - Soil & Crop Sciences, College Station, TX
Yield response of corn to phosphorous (P) application depends on a number of factors including residual soil P level, availability of soil moisture, soil chemical and physical properties, and variety planted.  These factors also influence the accuracy of P recommendations for corn production based on soil test results.  Corn is commonly used as a rotational crop with cotton in Texas.  Updated information is needed on corn response to P recommendations across multiple growing environments and seasons.  First, second and third-year field studies were initiated in the Blacklands and Coastal Bend regions of Texas to evaluate the response of corn to P fertility management.  Supplemental P was applied where suggested to achieve soil test recommendations based on residual soil P to a 15-cm depth.  Yields at most locations were limited by a relatively dry mid season in year one and two.  Management of P applications for corn production based on current soil test recommendations appears to be optimal across seasons and locations.
See more from this Division: S04 Soil Fertility & Plant Nutrition
See more from this Session: Phosphorus and Potassium Management: I