Abstract: Nitrate leaching was measured under no‐till and conventional tillage irrigated corn on a sandy loam soil. Ground water was sampled monthly for two years. Soil samples were taken three or four times a year to a depth of 150 ...

Abstract: The movement of atrazine, simazine, cyanazine, and metolachlor was studied for two years under conventional tillage and no‐tillage corn. Ground water and soil samples were analyzed for the herbicides. Atrazine and simazine ...

Abstract: The northeastern and Appalachian states have a diverse array of geology, soils, and climate. Irrigation is concentrated in a few states, with the largest irrigation area in the Coastal Plain soils. Most of these soils are ...

Abstract: The effect of irrigation and nitrogen management on ground‐water quality was evaluated for four years on a Sassafras sandy loam Coastal Plain soil. Applying the greatest portion of the nitrogen by side‐dressing and by ...

Abstract: Soil samples were taken from the surface to a depth of 152 cm on 16 irrigated sites and one forested site in the fall of 1983. All but one of the irrigation sites had corn grown on it in four out of the previous five years. ...

Abstract: Agricultural drainage development in the form of drainage alone and controlled drainage– subirrigation (CD-SI) has created environmental concerns. The primary concern is increased loading of nutrients, pesticides, and ...

Abstract: Drainage has been used in the northeastern United States and Canada since colonial times. It has only been since the 1970s that substantial quantities of subsurface drains have been installed annually in Quebec. Drainage ...