The 36-year-old fumbled a cross from Sascha Riether into the path of Dimitar Berbatov, who fired the Cottagers ahead after just eight minutes of the Boxing Day clash.
And, though Rickie Lambert's late penalty salvaged a point for the visitors, Adkins pulled no punches in his assessment of Davis' performance.
|THE SAINTS ARE GOING
|17/2||Southampton are 17/2 to finish bottom of the Premier League with Paddy Power|
“Kelvin has had a very quiet afternoon when you look at it. He has not really had that many things to go and do.
“The conditions are what they are. We are all accustomed to playing in the wind, rain, snow, bumpy pitches, hard pitches, dry pitches.
“You’ve just got to deal with it. You can’t complain about it.”