Compound words

Hello, Hunter. Perhaps 'seed dispersal':

http://en.wikipedia.org/wiki/Seed_dispersal is the movement or transport of http://en.wikipedia.org/wiki/Seed away from the parent plant.

Thanks, but seed dispersal is actually a very different process, or set of processes.

I need to choose one of these three:

'seedfall', 'seed fall' or 'seed-fall'

Which is gramatically correct?

None of those is grammatically correct. They are not recognized words. If you are so confident that seed dispersal is a different 'set of processes', then why don't you know the correct word for falling seeds?

In my experience the event of seeds falling from a tree is commonly spoken of as seed fall. I take this as being two words, though since this is spoken I really don't know. Certainly this appears to be the most common usuage based on a google search of the written words, with the single word seedfall appearing less common.

Similarly technical documents on the subject seem to most commo

The various ways of writing it (hyphen, etc) I call incorrect only because I cannot find the word in any on-line dictionaries. Generally, however, such compound words are accepted in two or three forms, not just one.

If as you say, it is used in your field of botany or agricultural technology or whatever, then I would certainly use the form that is most common: seed fall. It is in

Thanks for your help

Hunter