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Rolla, ND | Well here, if using just one thing, the conductivity maps work pretty well. I've used satellite shots too and if you can pick your year they seem to work ok too, you just have to know the salt spots and weed spots.
Yield can work okay in some crops, I'm not sure about cotton though.
My concern is, does more growth equal more yield?
If you group an area of excessive growth that results in a lower yield along with areas of lower yield due to lower growth, and then pour the nitrogen to it to increase yield, that would seem to me to be a bad thing, probably screw up maturity and dessication if nothing else.
Now I'm no cotton expert, I've never seen a growing cotton field in my entire life but my understanding is there is a point of too much growth and so your objective is to get good growth and not too much, that there is a penalty for both too much and not enough nitrogen. If I'm wrong in that, yield maps would be easier to work with.
So would yield be basically linearly related to growth or would it go up then max and then drop? I think that's the important question to know for using yield maps.
Marv
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VR NH3 Help...
