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Something for Everyone to Shoot Holes IN !! Moved From Crop Talk.
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BigNorsk
Posted 10/9/2007 01:20 (#216595 - in reply to #216192)
Subject: RE: Something for Everyone to Shoot Holes IN !! Moved From Crop Talk.



Rolla, ND
There's future and there's now.

The basic thing that drags down the resolution of the data set is he is going to apply the fertilizer either 90 or 60 feet at a time. That's the reality today.

If you were applying, would you want to reduce your fertilizer application on 90 feet every time you cross your center pivot tracks? Why would you want to do that?

As I said before, in the middle of the field the data from yield maps tends to be pretty good. It's the special occassions like stops and the headlands that need attention. Sometimes the easiest thing to do with a headland is just make the headland a zone and apply a set rate across it.

In the middle of the field, the things you clean are those stops, runs where you were taking less than a full cut, like when you finish, and sometimes people lose differential and things just end up in the wrong place. Or something malfunctions for a bit. But normally the middle of fields is pretty good data. Though one can wonder sometimes good for what.

I think it's real good for crop removal. Not so good for anticipating the future. It's real interesting to stack layers of yield data and see which grids are consistent and which aren't. Or simply add them up and see which areas yield the most.

Also very interesting to see how yield relates to growth. It often is related very well. But we had scab years in wheat where yield was almost the inverse of growth. Thin poor growth would give more bushels than a thick healthy stand because the thicker growth got worse scab.

Anyway, that gets kind of into other things. But the basic reason for smoothing and such is because at this time the implements do an awful lot of smoothing whether you want to or not.

Marv
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