2018 Projects

Project: 279-15

Title: Validation of Red Clover Cover Crop Nitrogen Credits for Corn

Principle Investigator: Matt Ruark

Objective: 

1) Determine the effect of red clover (as a green manure or silage crop) and tillage on corn yield.
2) Determine the effect of red clover (as a green manure or silage crop) on corn silage yield.
3) Calculate the N credit for red clover as a function of harvest/termination and tillage used.

Publications/Presentations
Ruark et al., 2020. Quantifying the benefits of legume cover crops. 2020 Wisconsin Agribusiness Classic.https://extension.soils.wisc.edu/wcmc/quantifying-the-benefits-of-legume-cover-crops/

Funding Level: $26,372
Duration: 2 year

Project: 291-17

Title: Evaluating Different In-season Nitrogen Diagnostic Approaches for Production of New Potato Cultivars in Wisconsin

Principle Investigator: Yi Wang

Objective:

1) To compare different in-season N diagnostic approaches (petiole N vs whole leaf N vs whole plant N analysis) for identifying the N status of different cultivars subjected to various N application rates.
2) To make recommendations about the optimal N fertilization for each cultivar based on different in-season N diagnostic approaches

Publications/Presentations
Wang, M.R. Naber, T.W. Crosby, and G. Liang. 2021. Evaluating multiple diagnostic tools for monitoring in-season nitrogen status of chipping potatoes. Potato Research. 1-20 – June 2021 https://app.dimensions.ai/details/publication/pub.1138915954?and_facet_source_title=jour.1030476
Wang, Y. 2021. Determining critical petiole nitrate levels for Silverton and Lakeview Russet. The Badger Common’Tater. Vol73 (6): 52-55 https://issuu.com/bctater/docs/621_standard

Funding Level: $63,463
Duration: 3 year

Project:289-17 

Title: Long-term Management, Soil Health, and Optimum N Rates for Corn

Principle Investigator: Matt Ruark

Objective:

1) Evaluate optimum N rats between long-term tilled and no-till fields on similar soil types.
2) Determine the effect of long-term tillage practices on biological measures of soil health.
3) Determine the relationship between soil biological measures of soil health and optimum N rate.
Funding Level: $109,704
Duration: 3 year

Project: 288-17

Title: Developing Long-Term P&K Trials to Evaluate Sustainable Crop Production in Wisconsin

Principle Investigator: Carrie Laboski

Objective:

1) Develop replicated research plots at Arlington, Hancock, Lancaster, and Marshfield ARS that have varied soil test P and K levels that can be used over the next 10 or more years.
2) Use research plots created in objective 1 to begin re-calibration of the Bray-1 soil test for determining P and K needs of corn, soybean, and alfalfa using modern hybrids/varieties and crop production practices.
Funding Level: $90,000
Duration: 3 year

Project: 286-17

Title: Impact of Liquid Manure Application Method to Cover Crops for Increasing Dairy Manure Nutrient Utilization and Reduce Environmental Risk

Principle Investigator: Francisco Arriaga

Objective:

1) Determine if surface applying liquid dairy manure over a cover crop is as effective as injecting liquid manure in reducing phosphorus losses.
2) Compare nitrogen availability to the following crop between injecting versus surface applying liquid dairy manure to a standing cover crop in the fall.
Funding Level: $60,027
Duration: 3 year