Oral SessionS08 Nutrient Management & Soil & Plant Analysis
The history of Soil Fertility in the US during the past 75 years is broken down into three distinct eras and discussed. The three eras discussed are: The first 25 years--Soil Testing/Problem Solving Era; The second 25 years--The Fertilizer Era; and the last 25 years--The Environmental Era.
Soil Fertility & Plant Nutrition
Monday, November 2, 2009: 4:15 PM-6:30 PM
Convention Center, Room 403-404, Fourth Floor
Thomas Thompson and Richard Norman