IPM etc certification

I would be interested to know of any current programs or studies on
consumer preferences and willingness to pay for reduced 
input/IPM/transitional/ecofriendly (BUT NON ORGANIC) certified and/or 
labelled ag products.

I would love to hear current thought on value to environment, producers, 
and consumers of reduced input but non-organic certification programs
and how these products are positioned with organic products.

Thank you very much.

Elizabeth Skinner
Community Development and Applied Economics
University of Vermont