sponsored by Divisions C-3, C-6, A-4, and S-4 of the American Society of Agronomy, Crop Science Society of America and the Soil Science Society of America ; editor-in-chief, Matthias Stelly
organized by Division S-3 (Soil Biology and Biochemistry) ; organizing committee, Peter G. Hartel, Horace D. Skipper, Thomas A. Ruehr ; editorial committee, Peter G. Hartel, Kathryn Paxton George, James Vorst
sponsored by Divisions S-4, S-2, and C-2 of the Soil Science Society of America, Crop Science Society of America, and the American Society of Agronomy in Anaheim, CA, 28 Nov.-3 Dec. 1982 ; editorial committee, S.A. Barber, D.R. Bouldin