Premium
Interaction between Manure and Tillage System on Phosphorus Uptake and Runoff Losses
Author(s) -
Ginting D.,
Moncrief J. F.,
Gupta S. C.,
Evans S. D.
Publication year - 1998
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.2134/jeq1998.00472425002700060017x
Subject(s) - manure , plough , eutrophication , tillage , manure management , snowmelt , phosphorus , zoology , surface runoff , agronomy , chemistry , soil water , environmental science , nutrient , soil science , ecology , biology , organic chemistry
Application of manure on soils having high P test has raised concerns over the eutrophication of lakes and rivers. The objective of this study was to evaluate the effects of one time application of 164 kg P ha −1 from solid beef ( Bos taurus L.) manure on soil Olsen P dynamics, P uptake by corn ( Zea mays L.) grain, and P losses as total P (TP), particulate P (PP), and dissolved molybdate reactive P (DMRP) in both snowmelt and rainfall runoff under ridge tillage (RT) and moldboard plow (MP) systems from 1992 to 1994. Soil P was consistently higher in the manure than no manure treated plots (17.9 vs. 12.3 mg kg −1 in 1993 and 23.7 vs. 13.8 mg kg −1 in 1994). Phosphorus uptake was greater from the manure than no manure treated plots (24.5 vs. 19.8 kg ha −1 and 23.5 vs. 18.8 kg ha −1 ). Annual PP and TP losses were either similar or lower from manure than no manure treated plots. Particulate P losses by rainfall runoff were lower from the RT vs. MP systems (0.25 vs. 1.95 kg ha −1 in 1993 and 0.06 vs. 0.65 kg ha −1 and 1994). The opposite was apparent for DMRP losses in snowmelt, which were higher from the RT than MP system (0.11 vs. 0.01 kg ha −1 and 0.14 vs. 0.03 kg ha −1 ). The RT system is an environmentally better system than the MP system due to its substantial reduction in annual PP and TP losses.