Poster References

1. Iowa State University - Department of Agronomy , Ames, IA

2. Gobran, G. R., & Clegg, S. (1996). A conceptual model for nutrient availability in the mineral soil-root. Canadian Journal of Soil Science, 76(2), 125-131.

3. Brookes, P. C., Landman, A., Pruden, G., & Jenkinson, D. S. (1985). Chloroform fumigation and the release of soil nitrogen: a rapid direct extraction method to measure microbial biomass nitrogen in soil. Soil Biology and Biochemistry, 17(6), 837-842.

4. Mehlich, A. 1984. Mehlich 3 soil test extractant: A modification of the Mehlich 2 extractant. Communications in. Soil Science and. Plant Analysis. 15:1409-1416.