Soil Fertility

(515) 294-1923

Nutrient Management/Planning

Nutrient removal when harvesting corn stover (8/6/2007)
Carbon and nitrogen cycling with corn biomass harvest (8/6/2007)
High prices and tight supply make tough fertilization decisions (10/2004)
Crop rotation considerations for 2004 management season (12/2003)
Drought impacts on soil fertility management (10/2003)
Watershed-scale phosphorus management (7/2001)
Dry fall leads to field fires (10/2000)
Estimating losses when cornstalk fields are accidently burnt (4/2000)
Improving soil fertility management (3/1997)

Mallarino, A.P. 2004. On-farm implementation of the phosphorus index: Observed risk ratings and impacts on fertilizer and manure phosphorus management. p. 145-152. In The Integrated Crop Management Conf. Proceedings. Dec. 1-3, Ames, IA. Iowa State Univ. Extension. (pdf)
Mallarino, A.P. 2003. Using the Iowa phosphorus index for agronomic and environmental management of fertilizer and manure phosphorus. p. 121-126. In The Integrated Crop Management Conf. Proceedings. Dec. 3-4, Ames, IA. Iowa State Univ. Extension. (pdf)
Sawyer, J.E. 2004. With high fertilizer prices is it business as usual or should fertilization practices change? p. 163 - 176. In Proc. 16th Annual Integrated Crop Manag. Conf., Ames , IA. 1-2 Dec. 2004. Iowa State Univ., Ames , IA.
Sawyer, J.E. 1999. Making every fertilizer dollar pay. p. 63-78. In Proc. Integrated Crop Manag. Conf., Ames, IA. 1-2 Dec. Iowa State Univ., Ames, IA. (pdf)