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May 10, 2012 – Phosphorus is needed for photosynthesis, respiration, energy storage and transfer, cell division and enlargement, and many other processes in plants. A ton of bermudagrass forage will take up approximately 12 lb P2O5. So, a 7-ton yield requires 84 lb P2O5/acre/year. Following soil test-based recommendations is the best way to ensure that P fertility levels are adequate for bermudagrass production. Many soils in the southeast test high in P; however, continued nutrient removal without replacement can be costly. Maintaining adequate soil-test P levels and balanced fertility are critical for high quality bermudagrass forage production.

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Steve Phillips      
Director

Bio/Contact Information

Agricultural production in the Southeast U.S. is diverse with over 50 M acres of cropland and another 54 M acres of established southern pine plantations. Widely produced throughout the region are soybean, hay, corn, wheat, and cotton (~45 M acres). Other crops such as rice, peanut, and sugarcane are limited to a few states in the region (~4.5 M acres). Citrus fruits are grown on approximately 1 M acres in FL and nearly ½ M acres of vegetables are grown annually in FL, GA, and NC. Fertilizer consumption typically runs around 2.2 M tons N, 1 M tons P2O5, and 1.5 M tons K2O. The soils in the production areas are largely sandy to sandy loam Coastal Plain types; however, silt loam and clay soils are also commonly farmed. Weather challenges occur frequently including drought, late freezes, and excessive rainfall and flooding.




Regional Update - Winter 2012






Following a significant increase in acreage from 2010 to 2011, the 2012 wheat crop in the Southeast is up another 8% to 4.7 million acres.

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Make plans now to join us at the 2012 International Conference on Precision Agriculture. The 11th ICPA will be held at the Hyatt Regency in Indianapolis, Indiana, USA from July 15th to July 18th, 2012.

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IPNI Video Resources

“The Right Way to Grow Wheat…4R Nutrient Stewardship” is an 8 minute video that addresses the economic, environmental, and social goals of sustainable agricultural systems needed to meet global demand for wheat.

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A Petiole Testing Program for Southern Cotton

Petiole testing is used to monitor plant nutrient status during the growing season and is a great way to enhance and fine-tune a nutrient management program.

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Precise Mid-Season Nitrogen Rate Determination for Use Efficiency and Yield Optimization of Rice in Mississippi

Nitrogen fertilizer is one of the major agricultural inputs in rice production and development of a more profitable and environmentally-sound production system is essential to maintain a competitive rice industry in the Mid-South.

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IPNI Awards Available to Graduate Students and Scientists

Each year, the International Plant Nutrition Institute (IPNI) offers the Scholar Award to honor and encourage deserving graduate students, and also the IPNI Science Award to recognize and promote distinguished contributions by scientists.

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