It may be tRNA, rRNA and/or other RNAs; treating an aliquot with RNase A or other RNases (RNase III) should give you an idea of what most of the smear and small bands might be.

Yes, I think so too. There is a pattern: where there is not a band, there is a cloudiness-which probably means degraded RNA. If you use RNAse you will get the answer. 

Maybe rRNA, because you can see "like" two bands. I think it is probably degraded in most cases. To solve this you can use RNase. But wacht out! because it also can be degraded DNA. 

Good luck!

The size of 50 bp is too small for complete tRNA, rRNA or especially mRNA. My best guess, the smear and the major low bands are degraded RNA molecules...

the degraded DNA is the best guess

I think its probably degraded RNA. Treating with RNase will sort this out. You can just add say 4 microlitres of 100 mg/ml RNaseA to 100 ul of DNA extract for a few minutes and then stick it the sample through a column clean up then run some more on the gel to see what it looks like. Good luck!

Those are RNA, as CTAB isolation protocols often shows presence of RNA as compared to other extraction protocols (P:C:I or DNA extraction Kits). Else may be low molecular weight fragments of DNA, or degraded DNA.

Treatment for RNA: This can be minimized by treating your product by RNAse 10mg/ml then mix the sample by inverting the tube 2–5 times. Incubate the mixture at 37°C for 15 minutes, and then cool to room temperature.

(Again go for gel electrophoresis, see if the intensity of those bands is minimized or else gone)

Thanks for all the input. I will give the RNAse a try, and see what I get post clean up.