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> On 18. Aug 2019, at 14:10, Paul Allen <pla16...@gmail.com> wrote: > > Land in crop rotation may be left fallow for a year, with no crop. OTOH, > where the land is very uneven then it might be used for nothing but pasture > (sheep or goats are the usual "crop" on land like that). +1, also where the soil is very meager (?) it may not be worth to plant crops and will be only used for extensive pasture > > Maybe we need crop=rotation rather than crop=yes. I suspect we need both. I’d prefer a new property crop_rotation=yes rather than using the crop key for something that isn’t a crop type. > Not > necessarily as the tag crop=yes if everyone thinks there's a better tag, but > we need to > cover "this is used to grow crops in some sort of rotation" and "this is used > to grow > crops but I can't figure out what type from this distance and I don't know if > it's > monoculture or rotation." +1 By the way, maybe fields used for “organic” agriculture could get another new property as well? > > Or maybe we should restrict ourself to mapping it as farmland because, in > general, > we don't know what a farmer is going to do with a given field from year to > year. this is what you can always do, and what you should do if you don’t know the specifics, although from a survey (or even from detailed aerial imagery) even a city dweller would usually be able to distinguish at least pasture from crops (if she passes there at the right time). Cheers Martin _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
