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Summer 2009 Crop production in the Southeast USA is often limited, not by the amount of fertilizer applied, but rather by the distribution of nutrients within the field. Spatial variability in soil nutrient supply, soil moisture and physical characteristics, and crop yield potential >more
Past Updates |
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Plant Food Uptake for Southern Crops
Nutrient uptake and removal for southern crops at typical yields are illustrated in table format >more
 Fertilization Guidelines for Profit Opportunities in Southern Pine Forest Management
Forest fertilization can be a wise investment opportunity for many landowners. This article provides a link to a recent Better Crops artilce on forest fertilization, forest feertilization websites at the Univeristy of Georgia and North Carolina State University, and a News and Views article on the topic . >more
P and K Needs for Corn
Low crop prices have led many farmers to look for ways to optimize corn and soybean fertilization for high and profitable yields. Maintaining high soil test phosphorus(P) and potassium (K) levels is an excellent strategy to manage risks during low crop prices. An understanding of the relative crop yield at different soil test P and K levels is fundamental to making wise fertilization decisions, and to minimizing the risk of lost profits. Knowledge of these management considerations will lead to efficient fertilization. >more
 Soybean Yields Increase with High Soil Test Potassium
High soybean yields require high soil test potassium levels. Soil test potassium can be increased over a period od 4 to 8 years and soybean yield potential can be increased. >more
 High Soil Test Phosphorus Increases Soybean Yields
Soil test P levels across the Midsouth region are below optimum for many crops. Yield potential is not being reached on many fields. Increased phosphorus fertilization can raise soil test P levels, increase yields, and decrease the risk of yield loss associated with weather extremes. >more
 Bermudagrass Needs N P and K
Bermudagrass stand survival, hay yield, and digestibility by animals were improved by nitrogen (N), phophorus (P), and potassium (K) fertilization. Fertilizer application following the first spring and before the last fall harvest was believed optimum for high yield, quality forage, and efficient use of nutrients by bermudagrass. >more
 Potassium Deficiency in Cotton
Potassium (K) deficiency in cotton can be season long or it can develop in association with a rapid development in the number and size of bolls. The developing bolls place a large sink demand for K on adjacent leaves. In recent years, K deficiency has occurred frequently after blooming. If K has not been stored adequately in the roots, stems, leaves, and petioles, deficiency can occur, and yield and quality will suffer. >more
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 Preventing P Deficiency Following Flooding or Soil Saturation
Soil flooding and drying conditions affect soil phosphorus availability. Upland crops like corn, soybeans, grain sorghum and wheat may suffer if phosphorus fertilizer is not properly managed. >more
 Using the Most Profitable Nitrogen Rate in Your Cotton Production System
Farmers, their fertilizer dealers, and crop advisers are considering ways to maintain or improve yields while managing the N rate, source, and timing optimally. Some are trying to determine if cutting back on the N rate will affect economic returns. Research results from across the Cotton Belt consistently show that the optimum N rate is not as affected by N price and cotton price as one might think. >more
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