Changes in nitrogen distribution, acidity, and salinity of soil under irrigated apple trees as affected by placement of nitrogen fertilizers.
Published: 1971
Language: eng
Number of pages: 60
Subjects: Nitrogen fertilizers.
Notes: Thesis (Ph. D.)--Washington State University.

"Literature cited": leaves 57-60.

WSU:Another copy on microfilm (no. 1436)

WSU:"Department of Agronomy and Soils"