On Sun, 18 Aug 2019 at 14:13, Martin Koppenhoefer <dieterdre...@gmail.com> wrote:
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). > It is often possible to see a random speckle of white blobs and infer those are sheep. The problem is that farmers move sheep from one field to another after they've eaten all the grass in one field. So absence of white blobs does not mean the field is not used for pasture. And, as I already mentioned, that field may be used for pasture only one year in four as part of crop rotation. Thinking about it, maybe we should reactivate landuse=pasture and add landuse=arable. See https://en.wikipedia.org/wiki/Arable_land which makes the distinction between pasture, arable land, and land for permanent woody crops (orchard, vineyards, rubber plantation, nut trees, etc.) We already have tags for many of the woody crops, so adding pasture and arable would fit in well and wouldn't require us to change the crop=* every year because of crop rotation. -- Paul
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