|
|
|
|
To interpret the effects of best management practices on water quality at a regional or large watershed scale, likely response times at various scales must be known. Therefore, four small ( less than or equal to 1 ha [ less than or equal to 2.5 ac]) watersheds, in rotational grazing studies at the North Appalachian Experimental Watershed near Coshocton, Ohio, were used to study management impacts on water quality and response times. Surface runoff was sampled on an event basis; groundwater discharge was sampled monthly from springs developed where a perching clay layer outcropped at the soil surface. In four large watersheds ranging from 18 to 123 ha (44 to 303 ac), base flow was over 50% of annual stream flow and...
|
Evaluations of non-nitrogen nutrient budgets in pasture systems are limited, and there needs to be greater knowledge of these budgets. Although most nutrient budget studies from grasslands have focused solely or primarily on N, maintenance of a proper nutrient balance is important to healthy plant growth and reduction of potential water quality problems. Budgets of non-nitrogen nutrients were studied in a rotational pasture system during two treatment periods, which received different levels of nitrogen (N) fertility. Rotationally grazed grass pastures in Ohio (USA) received 56 kg N ha−1 as NH4NO3 for a 5-year period and then 168 kg N ha−1 for a 10-year period. A topsoil pH of 6.0 and available P and K levels of...
Categories: Publication;
Types: Citation;
Tags: Calcium,
Groundwater,
Northeast CASC,
Nutrient leaching,
Ohio, All tags...
Other Landscapes,
Pasture systems,
Phosphorus,
Potassium,
Surface runoff, Fewer tags
|
|
