Title: SOIL CHEMISTRY AFTER FIFTEEN YEARS INTENSIVE APPLICATIONS OF SWINE LAGOON EFFLUENT Authors
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: March 1, 2006
Publication Date: July 9, 2006
Citation: Adeli, A., Rowe, D.E., Sistani, K.R. 2006. Soil chemistry after fifteen years intensive applications of swine lagoon effluent [abstract]. In: Proceedings of World Congress of Soil Science, Frontiers of Soil Science, July 9-15, 2006, Philadelphia, Pennsylvania. p. 458. Technical Abstract: Confined swine-feeding operations generate large quantities of waste on individual farms and in warmer climates it is typically flushed into anaerobic lagoons to facilitate digestion. To prevent lagoon overflow, swine effluent is applied to pastures and hayfields in close proximity to the lagoon from March 1 through October 31 each year at the rate of 4-5 inches per acre, threatening water quality and creating potential nutrient imbalance in soil fertility. The effects of swine (Sus scrofa domesticus) lagoon effluent on soil chemical characteristics were determined after 15 years of applications. Three soils receiving swine effluent are representative of the Blackland Prairie major land resource area and initially tested very low (Vaiden) to low (Okolona and Brooksville) in phosphorus (P). Our results indicated long-term effects of swine effluent applications on the potential build up of chemicals and salt accumulation in the slightly acidic soils were much greater than in the slightly alkaline soils having free calcium carbonate. Monitoring of site-specific soil and appropriate management are needed to mitigate the possible negative effects of salt accumulations and soil nutrient imbalances.