Principal Investigator: Daniel Kaiser
Organization: University of Minnesota, Soil, Water and Climate
Sponsor: Clean Water Fund
Award Amount: $224,773
Start Date: 4/15/2015 | End Date: 6/30/2018
Project Manager: Jeppe Kjaersgaard (Jeppe.Kjaersgaard@state.mn.us)
This study will include laboratory, field and greenhouse conducted research to:
The deliverables include a report summarizing the field correlation of the Haney H3A test. This report will also correlate the Haney test to the Bray P1 and Olsen test, two tests currently used for determining P fertilizer requirements. This data can be used by farmers, scientists and others to assess the value of the Haney test for determining fertilizer requirements for corn and soybean. Additionally, the research will summarize the effect of soil type and previous P fertilizer application on the amount of water extractable and bio-available P loss in sediment. Information on the amount of P that could potentially be lost due to leaching following previous P fertilizer application on different soil textures will be provided. Lastly, this project will provide results that help identify whether chelates applied to the soil could potentially increase the availability of P in the soil.