Jim,
'Blacknose' crappie are not a hybrid cross between white and black crappie. They are a black crappie with a gene for the black stripe down their nose and back for which they are named.
Other state Fish & Game agencies have used the blacknose crappie in stocking studies as the fish are easily identified by the natural marker and recruitment/contribution of stocked fish to the population is more easily tracked.
I've seen the reports on the KS CDC board of recent catches of blacknose crappie from a couple of our Kansas reservoirs. KDWPT has not stocked blacknose crappie so the sources of these fish may be coming from the private side (like fishlessDan mentioned his pond seeding the Wakie).