Title: Nutrient Management with Intensive Soil Sampling and Differential Fertilizer Spreading
Principle Investigator: N. Wollenhaupt / UW-Madison, Soil Science
Objective: To evaluate field sampling patterns to determine how many samples are required for creating soil test nutrient maps.
Funding Level: $14,960, $15,700, $14,960
Duration: 3 years
Project: 131-92 a
Title: Calibration of Petiole-P Concentration and Efficacy of Late P Fertilization of Potatoes in Wisconsin
Principle Investigator: K.A. Kelling / UW-Madison, Soil Science
Objective: To evaluate the use of petiole tests for phosphorus to determine if they can accurately assess P needs of potatoes.
Funding Level: $6,837, $6,967, $8,420, $8,940
Duration: 4 years
Title: Preliminary Evaluation of Corn Response to Zinc and NPK Starter Fertilizer Treatments at Low Zinc and Excessively High Phosphorus Soil Test Levels
Principle Investigator: L.G. Bundy / UW-Madison, Soil Science
Objective: To determine corn yield and nutrient uptake response to NPK starter fertilizer and zinc applications at low zinc and excessively high phosphorus soil test levels.