Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/8/2000
Publication Date: 11/1/2000
Citation: POTE, D.H., REED, B.A., DANIEL, T.C., NICHOLS, D.J., MOORE JR, P.A., EDWARDS, D.R., FORMICA, S. 2000. WATER-QUALITY EFFECTS OF INFILTRATION RATE AND MANURE APPLICATION RATE FOR SOILS RECEIVING SWINE MANURE. MEETING ABSTRACT. p. 387.
Technical Abstract: We investigated effects of rain infiltration rate and manure application rate on quality of leachate and runoff from four soils receiving applications of swine (Sus scrofa L.) manure slurry. Tall fescue (Festuca arundinacea Schreber) plots received 1 or 2 Mg (dry weight) of swine manure slurry per ha to provide 78.4 or 156.8 kg N per ha. Simulated rain (75 mm/h), applied 24 h after slurry application, produced 30 min of runoff from each plot. Mean infiltration rates ranged from 7.7 to 60.6 mm/h. Concentrations and mass losses of total Kjeldahl N (TKN), ammonia-N, dissolved reactive P (DRP), and total P in runoff increased significantly (P<0.05) following slurry applications, and doubled when slurry application doubled. High infiltration rates reduced runoff volumes and runoff concentrations of soluble nutrients: C1, total dissolved solids, DRP, TKN, and ammonia N. Concentrations of nitrate N and ammonia N in leachate water, collected at 0.4-m depth by suction cup lysimeters, did not increase following slurry applications.