Soil Fertility: Current US Situation and Challenges
- Amitava Chatterjee
Maintaining soil fertility is a critical component of the crop production system to ensure economic profitability and sustaining productivity. The ongoing plummet in crop prices, shrinking cropland area, increasing fertilizer prices, and environmental concerns associated with fertilizer application are triggering a rethinking of our current principles of crop nutrition and fertilizer management practices. The recent development of the 4-R stewardship program was designed to reduce the adverse impacts of agriculture on the environment. In future systems, soil scientists and agronomists will be asked to consider both goods and services, as well as increased crop diversity. Meeting projected food requirements for 2050 requires the discovery of the connections among soil health, crop productivity, tillage intensity, climatic conditions, and the agronomic requirements for production systems. In this chapter, the current US situations of crop production area, nutrient demand, and nutrient removal are discussed as a foundation to understand the scope for the development of fertilizer management.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
Copyright © 2016. . Copyright © 2016 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc.