| Carbon and nitrogen cycling with corn biomass harvest | IC-498(22) -- August 6, 2007 |
| Carbon and nitrogen cycling with corn biomass harvest | IC-498(22) -- August 6, 2007 |
| Carbon and nitrogen cycling with corn biomass harvest | IC-498(22) -- August 6, 2007 |
| Nutrient removal when harvesting corn stover | IC-498(22) -- August 6, 2007 |
| Nutrient removal when harvesting corn stover | IC-498(22) -- August 6, 2007 |
| Increasing the frequency of corn in crop sequences: Grain yield and response to nitrogen -- a research update | IC-498 (1) -- February 12, 2007 |
| Increasing the frequency of corn in crop sequences: Grain yield and response to nitrogen -- a research update | IC-498 (1) -- February 12, 2007 |
| Increasing the frequency of corn in crop sequences: Grain yield and response to nitrogen -- a research update | IC-498 (1) -- February 12, 2007 |
| Interpreting results of the Mehlich-3 ICP Soil Phosphorus Test | IC-490(24) -- November 17, 2003 |
| Use new potassium soil test and fertilizer recommendations | IC-490(23) -- October 20, 2003 |
| Corn leaf potassium deficiency symptoms | IC-488(15) -- July 1, 2002 |
| Phosphorus - Why the concern about water quality? | IC-486(21) -- August 20, 2001 |
| Soil resources of phosphorus | IC-486 (2) -- February 26, 2001 |
| Phosphorus in aquatic systems | IC-484(25) -- December 18, 2000 |
| Management of phosphorus for crop production | IC-484(23) -- October 23, 2000 |
| Corn and soybean responses to deep-band phosphorus and potassium | IC-484(22) -- September 18, 2000 |
| Corn and soybean responses to deep-band phosphorus and potassium | IC-484(22) -- September 18, 2000 |
| Soil testing and available phosphorus | IC-484(22) -- September 18, 2000 |
| Corn and soybean responses to deep-band phosphorus and potassium | IC-484(22) -- September 18, 2000 |
| Why manage phosphorus? | IC-484 (6) -- April 24, 2000 |
| Effective use of precision agriculture for improved management of phosphorus, potassium, and lime | IC-482 (PrecisAg) -- May 5, 1999 |
| Effective use of precision agriculture for improved management of phosphorus, potassium, and lime | IC-482 (PrecisAg) -- May 5, 1999 |
| Effective use of precision agriculture for improved management of phosphorus, potassium, and lime | IC-482 (PrecisAg) -- May 5, 1999 |
| Interpreting P and K soil test results | IC-482 (1) -- January 18, 1999 |
| Interpreting P and K soil test results | IC-482 (1) -- January 18, 1999 |
