Possibly.
The details of this become obscured due to the odd units and the general lack of information. Both Cs137 and Sr90 were released in significant amounts.
However, the amount of fission products released during open air testing was quite large. So large that in 1961 the atmospheric concentration of C14 was twice baseline in the northern hemisphere.
Subsequently it decayed with an apparent half life of 11 years, almost entirely due to carbon entering and leaving the atmosphere.
As a side note, this is the clearest evidence that anthropogenic carbon is a small fraction of the carbon entering the atmosphere.
I suspect that the releases in the 50s and 60s of which about 25% remain, are the main source, especially in the US, as the concentration of CS137 fallout from (for example) Fukashima was mostly within a fairly short distance from the site.
I suppose the details could be ferreted out, but it would be unlikely to change the outcome.
Ionizing radiation is everywhere. In most places it is due to naturally occurring sources. I have a half kilo chunk of pitchblende which came from my wife's grandfather. I verified its composition by Archimedes' method. I am tempted to make a scintillation detector just to show my 14yo how. It should have a reasonable output of beta. I don't keep it under my pillow, of course. But it is likely harmless.
What I find interesting is how it is concentrated in nectar.