<div dir="ltr"><div dir="ltr">On Sun, 18 Aug 2019 at 07:40, Joseph Eisenberg <<a href="mailto:joseph.eisenberg@gmail.com">joseph.eisenberg@gmail.com</a>> wrote:<br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
But I see that there is some desire for a tag for generic cropland, or<br>
farmland used to grow unspecified crops. For this I would suggest the<br>
key "farmland=cropland" or "crop=field_cropland", rather than crop=yes<br>
(less specific) or produce=crop (unclear).<br></blockquote><div><br></div><div>Before we get to the details of how we're going to tag it, we need to be clear on what</div><div>"it" is.</div><div><br></div><div>Modern agricultural techniques (mainly the use of fertilizers, whether natural or</div><div>artificial) permit monoculture, where a single type of crop is grown in the same</div><div>field, year after year. This we can map with crop=* (or crop=yes or whatever</div><div>replaces it when we know a monoculture crop is grown but we don't know</div><div>what it is, although that seems unlikely).</div><div><br></div><div>However, it is still fairly common to use crop rotation where different crops are grown</div><div>in different years, or even two different crops in the same year.</div><div>See <a href="https://en.wikipedia.org/wiki/Crop_rotation">https://en.wikipedia.org/wiki/Crop_rotation</a> One crop in the rotation may be</div><div>grass, harvested for silage to later be fed to animals. In some cases a field</div><div>in a crop rotation may be used as pasture for a year to directly feed animals.</div><div>Land in crop rotation may be left fallow for a year, with no crop. OTOH,</div><div>where the land is very uneven then it might be used for nothing but pasture</div><div>(sheep or goats are the usual "crop" on land like that).<br></div><div><br></div><div>Maybe we need crop=rotation rather than crop=yes. I suspect we need both. Not</div><div>necessarily as the tag crop=yes if everyone thinks there's a better tag, but we need to</div><div>cover "this is used to grow crops in some sort of rotation" and "this is used to grow</div><div>crops but I can't figure out what type from this distance and I don't know if it's</div><div>monoculture or rotation."</div><div><br></div><div>Or maybe we should restrict ourself to mapping it as farmland because, in general,</div><div> we don't know what a farmer is going to do with a given field from year to year. There</div><div>are specific cases where we're fairly sure a field is used for monoculture and we</div><div>have specific tags for those: orchard, vineyard, etc. But, in general, just because I</div><div>see oilseed rape in a field this year that doesn't mean it's going to be oilseed</div><div>rape next year (it usually isn't, around here).<br></div><div><br></div><div>I should also point out that many farms around here devote some or all of their land</div><div>to tourism. Is that crop=tourist? Where the tourists pitch their tents or park their</div><div>caravans is a camp site, but some of the farmland may be left for tourists to</div><div>use recreationally (aka the farmer having given up on farming completely</div><div>because it's no longer economic).<br></div><div><br></div><div>-- <br></div><div>Paul</div><div><br></div></div></div>