Submitted to: World Cotton Research Conference Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 5/1/2007
Publication Date: 9/10/2007
Citation: Bauer, P.J., Szogi, A.A., Vanotti, M.B. 2007. Fertilizing cotton with P recovered from swine wastewater [abstract]. Proceedings of World Cotton Research Conference-4, September 10-14, 2007, Lubbock, Texas. 2007 CDROM.
Technical Abstract: A new treatment technology has been developed to recover soluble P from waste on swine (Sus scrofa domesticus) farms. Our objective was to compare this recovered P to triple superphosphate and broiler litter for soil availability, leaching, and cotton (Gossypium hirsutum L.) plant P concentration. A column (15-cm X 76-cm) study was conducted in a greenhouse with Uchee sand (loamy, siliceous, thermic, Arenic Paleudult) soil. Fertilizing cotton with recovered P resulted in the same plant P concentration as plants fertilized with broiler litter and with TSP. Available P concentration in the soil in the surface 22.5 cm of the columns was lower for broiler litter than the other two treatments. Movement of P below the surface 15 cm (where the fertilizer materials were placed) occurred only for triple superphosphate. Available P concentrations in the soil did not differ among treatments below 22.5 cm. The data suggest the recovered P from swine waste water is less prone to leaching than triple superphosphate and can be used as a readily available P source.