RUSLE2 and Iowa Phosphorus Index Workshops

Kapil Arora, Ag Engineering Field Agronomist-Central; Shawn Shouse, Ag Engineering Field Specialist-Southwest; Mark Licht, Field Agronomist-Northwest; and Angela Rieck-Hinz, Extension Program Specialist, Agronomy Dept.

Problem Statement:

Producers, co-op agronomists, and technical service providers generally are not trained on Revised Universal Soil Loss Equation (RUSLE2) principles and need better understanding of Iowa Phosphorus Index for conservation and nutrient planning.

Programmatic Response:

Two workshops titled “RUSLE2 and Iowa Phosphorus Index” were delivered in 2008.  These workshops, developed in collaboration with USDA Natural Resources Conservation Service (Iowa-NRCS), were held in Carroll and Marshalltown. A total of 41 participants from Iowa, South Dakota, and Illinois attended these workshops with majority of participants being consultants and service providers.  During these workshops, Iowa-NRCS and ISU Extension staff provided hands-on training on Dominant Critical Area Determination, RUSLE2 Operations, Ephemeral & Classical Gully Erosion, Iowa Phosphorus Index Calculations, collecting field information, and Soil Sampling as needed to meet various regulatory requirements.

Outcome Statement:  

A total of 36 workshop evaluations were received.  Those reporting worked with or managed approximately 425 thousand acres and 1,130 clients on an annual basis.  They also reported developing over 850 nutrient management plans annually.  Benefit gained from the workshop was reported as some to quite a lot.  Participants indicated an average gain of $367 per client serviced or $0.74 per acre serviced.  The overall average gain was reported as over $7,600 per participant.

Participants completing evaluations provided a pre- and post-workshop level of knowledge in their evaluations.  All respondents indicated an average pre-workshop level of knowledge at 39 percent on all topics covered in the workshops.  This level of knowledge was raised to over 82 percent based on post-workshop evaluations.  Every participant reported that the information provided in workshop as helpful towards meeting their needs in developing conservation and nutrient management plans.

Several comments received during the workshops included:  “Best one I have been to (in South Dakota, Iowa & Minnesota)!”, “I am looking forward to advanced workshop. Workshop very helpful to have different people presenting specialized information, very organized.”, “Learned a lot of useful information”, “Workshop on different option problem people have. Best workshop-I have been in on the Rusle2 worksheets”, etc.


164  Utilization of nutrient management indices and tools

Page last updated: April 6, 2009
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