Abstract
The effect of broiler litter application rate on bermudagrass [Cynodon dactylon (L.) Pers.] yield and nutrient uptake, and on phosphorus (P) level of two associated soils was studied over three years. Five litter rates (0,4.48, 8.96,17.92, and 35.84 Mg ha−1; on as-is basis) were applied each year to two geographically associated soils: a Ruston fine sandy loam with no history of litter application and a Savannah fine sandy loam with high soil P due to thirty years of application. Annual forage yield and nutrient uptake increased quadratically in response to application rate. Apparent P recovery averaged 12% on the Ruston soil and 4% on the Savannah soil. Within three years, P levels of both soils were equivalent, indicating that without consideration of litter application rate, P level of even low-P soils can rapidly reach excessive levels.
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