This report is interesting in that it also looks at unpublished trials (but on corn)
Are Fungicides No Longer Just For Fungi?
An Analysis of Foliar Fungicide Use in Corn
at
http://www.apsnet.org/publicat...
The research I noticed where the strobilurin delayed the leaf senescence (of the flag leaf?) promoted the increase in photosynthesis due to that delay. That might lead one to simply look at the final effect or changes close to it.
