Efficient use of Nutrients Applied as Starter Fertilizer

1. Study the impacts that nutrients applied alone or in combination as starter fertilizer have on early root and shoot growth of corn

2.  To examine any potential interactions between nutrients to assess how the uptake of one nutrient in starter mixes may impact another

3. To determine whether combinations of starter fertilizer have an effect on root pruning by corn rootworm on a non-rootworm Bt hybrid and the impacts on nutrient uptake between two hybrids within a near isoline with and without the Bt rootworm gene.

Nutrient management research for profitable soybean production

1.  Examine how different soils in a landscape may respond to sulfur fertilization.

2. Evaluate how the application of nitrogen and phosphorus fertilizers mixed with sulfur may affect plant growth and the overall uptake and response from sulfur fertilization.

3. Study how sulfur fertilization may affect residue and grain sulfur concentration or uptake at the end of the season.

Examining Sulfur Rates for Wheat and Split Application versus a Single Broadcast

1. study the impacts of sulfur fertilization rates on wheat growth, sulfur uptake, yield, and grain protein content

2. determine if a slow-release fertilizer source is more efficient at supplying sulfur to wheat throughout the growing season as compared to a highly soluble form (ammonium sulfate)

3. compare wheat response to applying sulfur according to current recommendation as a single pre-plant broadcast application versus a split application of half the recommended rate broadcast pre-plant and half applied in-season.

Efficient Management of Nitrogen Fertilizer for Wheat Grown in Minnesota 

1.  Determine adequate N fertilizer needs of hard red spring and winter wheat grown in Minnesota.

2. Establish the efficacy of a split application of nitrogen for hard red winter wheat.

3. Evaluate N uptake and utilization through the growing season of two spring wheat varieties, which vary in grain yield and protein potential, from straight and polycoated urea N sources.

4. Determine the effects on spring wheat grain yield and protein of various combinations of straight and polycoated urea N sources applied in a single pre-plant application.

Impact of phosphorus fertilization strategies on efficiency of nitrogen use by corn rotated with soybean

1. Compare crop response to P management systems based upon SLAN versus BPM concepts

2. Study how soil properties across a landscape may interact with P management strategies.

3. Evaluate how P management systems may affect N fertilizer use by corn rotated with soybean