Compositional and functional features of humic acids from organic amendments and amended soils in Minnesota, USA
January 1, 2007
The use of organic amendments requires an adequate control of the chemical quality of their humic acid (HA)-like fractions and of the effects that these materials may have on the status, quality,...
Influence of slope position and hog manure injection on fall soil P and N distribution in an undulating landscape
January 1, 2007By Sumith K. R. Priyashantha
Investigation of how soil nutrients are distributed over the landscape in the fall is a prerequisite to identify critical source areas (CSA), which contribute soil nutrients to surface waters through...
Nitrification monitoring in a biofilter treating pig manure
January 1, 2007
BACKGROUND: Nitrogen removal by organic biofilters treating pig manure is incomplete and has to be optimized. This could be achieved by promoting the activity of denitrifiers, this being the limiting...
Dissolved organic carbon in runoff and tile-drain water under corn and forage fertilized with hog manure
January 1, 2007By Crops Research and Development Centre|I. Royer Soils
Dissolved organic carbon (DOC) export from soils can play a significant role in soil C cycling and in nutrient and pollutant transport. However, information about DOC losses from agricultural soils...
Impacts of waste from concentrated animal feeding operations on water quality
January 1, 2007By P.S. Thorne
Waste from agricultural livestock operations has been a long-standing concern with respect to contamination of water resources, particularly in terms of nutrient pollution. However, the recent growth...
Nutrient losses from manure and fertilizer applications as impacted by time to first runoff event
January 1, 2007By D.R. Smith USDA-ARS
Nutrient losses to surface waters following fertilization contribute to eutrophication. This study was conducted to compare the impacts of fertilization with inorganic fertilizer, swine (Sus scrofa...
Tile water quality following liquid swine manure application into standing corn
January 1, 2007By B. R. Ball
The quality of water draining fields fertilized with liquid swine (Sus scrofa) manure (LSM) sidedressed into standing corn (Zea mays L.) at rates ranging from 0 to 94 m(3) ha(-1), either topdressed...
Slurry-application implement tine modification of soil hydraulic properties under different soil water content conditions for silt-clay loam soils
January 1, 2007By K.M. Turpin Eastern Cereal|Oilseed Research Centre
Tillage action associated with liquid slurry application systems/management practices can modify soil infiltration properties. The degree or nature of such modification will depend largely on the...
The effect of feeding low-phytate barley-soybean meal diets differing in protein content to growing pigs on the excretion of phosphorus and nitrogen
January 1, 2007By J. K. Htoo
An experiment was conducted with growing pigs to determine the excretion of P and N in 4 barley-based diets formulated to contain 18 or 15% CP by using a normal barley (NB) or a low-phytate barley...
Development of environmentally superior treatment system to replace anaerobic swine lagoons in the USA
January 1, 2007
A full-scale treatment system for swine manure was developed to eliminate discharge to surface and ground waters and contamination of soil and groundwater by nutrients and heavy metals, along with...
