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But would there
have been ditches WITHOUT such bridges in the first place? How did
you get the water out of the ditch and onto the field without the
bridge/pump system?

Of course there would have been. Watering can be moved out of the
ditch by hand very easily using a simple syphon method and that is
common enough even today. See pic on this cite:
http://www.pump-zone.com/piping/pipi...ing-sound.html


only if you turn the whole world on its head. Siphoning from a lower
to a higher point sounds like a perpetual motion machine. Are you
trolling?

Are you really stupid or are you just trying to appear that way?

There you go, as expected. Your picture does not match the picture from
the OP. Height of water intake and outgo matters when siphoning.

The OP asked a) whether there would have been irrigation ditches without
bridges, and b) how did the water get out of the ditch and onto the field
with a pump. My response answered both of those questions. Ask someone
for help if you can't understand that.

Ah, you are changing your story, the mark of a true troll! (Longevity on
a group had no bearing on the determination of a troll).

I haven't changed my story at all. You just can't read competently.

She was asking if there would have been THESE ditches without such
bridges,

No, that was not the question asked. Try rereading what was written.

The question was 'would there have been ditches without these bridges' (the
answer to that is yes, there would have been). The next question was 'how
did you get the water out of the ditch and onto the field without the
bridge/pump system' (the answer to that is the syphon system I mentioned and
that Dean also knows about).

and how would you get water out of THIS ditch without a pump.

No that wasn't the question asked. No mention whatsoever if 'these' ditches
or 'this' ditch.

You answered
neither question, but possibly brought confusion to any reader who might
not understand how siphons work.

You need to get out and look at irrigation ditches and how irrigation is
done. As Dean mentioned, these days pumps are mostly used but that is not
the only way to apply water from an irrigation channel and nor is the
irrigation channel shown by the OP the only way irrigation channels look at
all times or across a whole farm.

If you got out and actually looked at irrigation channels and you might have
some sort of clue about how they could be used without access to a pump.