In 1971 and 1972, we sampled streams across Kentucky for nitrate-nitrogen (NO3-N) during the high-water flow months of January through June. The results were variable and showed a dominant effect of geology and lesser effects of both time and land use on the results. Since that time, use of fertilizer nitrogen (N) has nearly doubled in Kentucky and, further, there is a high degree of concern among the public that NO3-N from fertilizer use may be contaminating streams. The US Environmental Protection Agency has set a maximum of 10 ppm NO3-N in water as being safe for human consumption
There is a need to evaluate high surface nitrate concentrations across agricultural watersheds, both...
Increased availability and reduced cost of synthetic-nitrogen fertilizers have led to excess nitroge...
Excess nutrients are found in watersheds originating from active farmland often causing poor water q...
This project was designed to determine the effects of nitrogen fertilization on the quality and quan...
Public attention and Federal legislation have focused recently on the contamination of groundwater b...
Agricultural activities often contaminate watersheds with excess nutrients leading to poor water qua...
The U.S. Environmental Protection Agency (EPA) has established a maximum nitrate nitrogen (NO3-N) co...
The quality of water in Kentucky\u27s agricultural watersheds has received considerable attention in...
Agricultural activities often contaminate watersheds with excess nutrients, leading to poor water qu...
Agricultural activities often contaminate watersheds with excess nutrients leading to poor water qua...
The quality of water in Kentucky\u27s agricultural watersheds has received considerable attention in...
Agricultural activities often contaminate watersheds with excess nutrients leading to poor water qua...
Soils from several areas in Kentucky were placed in columns and leached with Ca(NO3)2. Subsoils high...
At the present time there is public concern about the effect which nitrogen (N) fertilizer use by fa...
Nitrate (NO3-) uptake and denitrification in small headwater streams can have significant implicatio...
There is a need to evaluate high surface nitrate concentrations across agricultural watersheds, both...
Increased availability and reduced cost of synthetic-nitrogen fertilizers have led to excess nitroge...
Excess nutrients are found in watersheds originating from active farmland often causing poor water q...
This project was designed to determine the effects of nitrogen fertilization on the quality and quan...
Public attention and Federal legislation have focused recently on the contamination of groundwater b...
Agricultural activities often contaminate watersheds with excess nutrients leading to poor water qua...
The U.S. Environmental Protection Agency (EPA) has established a maximum nitrate nitrogen (NO3-N) co...
The quality of water in Kentucky\u27s agricultural watersheds has received considerable attention in...
Agricultural activities often contaminate watersheds with excess nutrients, leading to poor water qu...
Agricultural activities often contaminate watersheds with excess nutrients leading to poor water qua...
The quality of water in Kentucky\u27s agricultural watersheds has received considerable attention in...
Agricultural activities often contaminate watersheds with excess nutrients leading to poor water qua...
Soils from several areas in Kentucky were placed in columns and leached with Ca(NO3)2. Subsoils high...
At the present time there is public concern about the effect which nitrogen (N) fertilizer use by fa...
Nitrate (NO3-) uptake and denitrification in small headwater streams can have significant implicatio...
There is a need to evaluate high surface nitrate concentrations across agricultural watersheds, both...
Increased availability and reduced cost of synthetic-nitrogen fertilizers have led to excess nitroge...
Excess nutrients are found in watersheds originating from active farmland often causing poor water q...
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