[Tagging] Is crop=yes tag completely and utterly useless?

Joseph Eisenberg joseph.eisenberg at gmail.com
Sun Aug 18 06:39:01 UTC 2019

"Crop is a produce"

What does that mean?

The word "crop" in British English means " a cultivated plant that is
grown on a large scale commercially, especially a cereal, fruit, or
vegetable. (Oxford); or "a plant such as a grain, fruit, or vegetable
grown in large amounts" (Cambridge).

Plants are not produce, "produce" is the thing that a plant produces,
in OSM: "Describes a feature's agricultural output..." - so the word
"crop" is not appropriate, because "crop" is not the agricultural
output of an area of farmland, but a category.

But I see that there is some desire for a tag for generic cropland, or
farmland used to grow unspecified crops. For this I would suggest the
key "farmland=cropland" or "crop=field_cropland", rather than crop=yes
(less specific) or produce=crop (unclear).


Warin, if you do decide to use any of these tags, please document them
at a Tag: page or in your userspace or a proposal, if you have the


On 8/18/19, Warin <61sundowner at gmail.com> wrote:
> Cannot farm land can be used for crops for some time, and then milk
> cattle for some other period of time?
> IIRC that is what one of my relatives did.
> On 18/08/19 11:20, Leif Rasmussen wrote:
>> But isn't that the definition of farmland in OSM? I would map meadows,
>> farmyards, and orchards with their respective tags, not with
>> landuse=farmland.
>> Leif R
>> On Sat, Aug 17, 2019 at 7:18 PM Joseph Eisenberg
>> <joseph.eisenberg at gmail.com <mailto:joseph.eisenberg at gmail.com>> wrote:
>>     Produce=crop would be worse, because “crop” is not a type of
>>     produce, and produce= is only very rarely used for crop land (
>>     crop= is the established key for types of crops like rice,
>>     sugarcane, wheat, etc)
> The rate of present usage does not limit the use of a tag.
> colour=#93006B <https://taginfo.openstreetmap.org/tags/colour=%2393006B>
> is only used once in the data base ..
> height=16 metres is only used once in the data base...
> Crop is a produce.
> produce=crop has 2 uses .. presently.
> I have been mapping a small area where my family farmed for several
> generations ... tomorrow there will be a lot more produce=crop.
> If the judgement is simply on frequency of use the result may well be
> wrong.
>>     As I mentioned on the Talk:Key:crop page, I suspect that this tag
>>     crop=yes is sometimes used to say “this area of farmland is used
>>     as crop land”, that is, to grow row crops like
>>     grains/sugarcane/other annuals. So at least we know it probably
>>     isn’t a meadow or a farmyard or an orchard?
> Vineyards have their own tag, should the tag crop=grapes be removed?
>>     Joseph
>>     On Sun, Aug 18, 2019 at 7:44 AM Warin <61sundowner at gmail.com
>>     <mailto:61sundowner at gmail.com>> wrote:
>>         Would produce=crop be better?
>>         As produce could be fish, cattle, sheep, wool, or crops.
>>         produce=crop would say that only crops are produced here.
>>         On 18/08/19 01:27, Martin Koppenhoefer wrote:
>>         >
>>         > sent from a phone
>>         >
>>         >> On 17. Aug 2019, at 17:09, Mateusz Konieczny
>>         <matkoniecz at tutanota.com <mailto:matkoniecz at tutanota.com>> wrote:
>>         >>
>>         >> 9326 of 9657 crop=yes is on landuse=farmland - it seems to
>>         me that it is
>>         >> not adding any information whatsoever.
>>         >
>>         > certainly removing them would be even less useful? You could
>>         read it as a way of stating that something is purposefully
>>         grown there. Someone else might refine it later ...
>>         >
>>         > Cheers Martin
>>         > ______________

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