Soil salinity poses challenges for sustainable agriculture and wildlife

by John Letey
Published 2000-03-01

Soil type, crop and irrigation technique affect nitrogen leaching to groundwater

by John Letey, Peter Vaughan
Published 2013-10-01

Irrigation shifts toward sprinklers, drip and microsprinklers

by Susan Edinger-Marshall, John Letey
Published 1997-05-01

A greenhouse experiment finds water-sorbing polymers do not conserve water

by John Letey, Pete R. Clark, Christopher Amrhein
Published 1992-05-01

Polymers check furrow erosion, help river life

by Hal McCutchan, Phil Osterli, John Letey
Published 1993-09-01

Farmers adopt new irrigation and fertilizer techniques: Changes could help growers maintain yields, protect water quality

by Joe Dillon, Susan Edinger-Marshall, John Letey
Published 1999-01-01