The primary design ofthis project isto determine the impact of appropriate rates of swine manure applications to corn and soybeans based on nitrogen and phosphorus requirements, crop yields, soil phosphorus accumulation, and nitrate and phosphorus leaching to groundwater. Another purpose of this design is to develop and recommend appropriate manure and nutrient management practices to producers to minimize the water contamination potential and enhance the use of swine manure as an organic fertilizer. A third component is to determine the potential effects of rye as a cover crop to reduce nitrate loss to shallow ground water
Swine production facilities are becoming more concentrated in Iowa, and public is concerned about th...
Long-term applications of organic or inorganic sources of N to croplands can increase the leaching p...
Proper methods and rates for applying livestock manure to crop land are critical to preserve water q...
The primary objective of this project was to determine the impact of appropriate rates of swine manu...
The primary objective of this project was to determine the impact of appropriate rates of swine manu...
The primary objective of this project was to determine the impact of appropriate rates of swine manu...
Nonpoint source nutrient pollution related to land application of manures is recognized as an import...
Nonpoint source nutrient pollution related to land application of manures is recognized as an import...
In the fourth year of this ongoing project, the effects of nine N-management practices under differe...
Manure is an important resource for meeting the nutrient needs of corn and soybean grown in Iowa. La...
Liquid swine manure is a valuable crop nutrient source in Iowa. Producers may lack confidence in man...
Nitrate from fertilizers and manure application have been detected in the surface and ground water i...
Nutrient losses from row-crop land can cause nonpoint source water quality problems and “impaired wa...
This report documents results from a six-year study (1996-2001) that evaluated effects of liquid swi...
Swine manure and fertilizer can be used to supply the nitrogen (N) and phosphorus (P) needs of crops...
Swine production facilities are becoming more concentrated in Iowa, and public is concerned about th...
Long-term applications of organic or inorganic sources of N to croplands can increase the leaching p...
Proper methods and rates for applying livestock manure to crop land are critical to preserve water q...
The primary objective of this project was to determine the impact of appropriate rates of swine manu...
The primary objective of this project was to determine the impact of appropriate rates of swine manu...
The primary objective of this project was to determine the impact of appropriate rates of swine manu...
Nonpoint source nutrient pollution related to land application of manures is recognized as an import...
Nonpoint source nutrient pollution related to land application of manures is recognized as an import...
In the fourth year of this ongoing project, the effects of nine N-management practices under differe...
Manure is an important resource for meeting the nutrient needs of corn and soybean grown in Iowa. La...
Liquid swine manure is a valuable crop nutrient source in Iowa. Producers may lack confidence in man...
Nitrate from fertilizers and manure application have been detected in the surface and ground water i...
Nutrient losses from row-crop land can cause nonpoint source water quality problems and “impaired wa...
This report documents results from a six-year study (1996-2001) that evaluated effects of liquid swi...
Swine manure and fertilizer can be used to supply the nitrogen (N) and phosphorus (P) needs of crops...
Swine production facilities are becoming more concentrated in Iowa, and public is concerned about th...
Long-term applications of organic or inorganic sources of N to croplands can increase the leaching p...
Proper methods and rates for applying livestock manure to crop land are critical to preserve water q...