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Little River, TX | The more clay your soil has the more nitrogen you can apply. Sometimes more clay requires more nitrogen for results during the current cropping year.
With some heavy clay soils nitrogen applied early becomes a slow release fertilizer. In our case we recover half the nitrogen applied this year and up to half the residual nitrogen from previous years.
If practical try a strip of 85 #s N, one of 127 #s of N and a strip at 42 #'s N using anhydrous. Anhydrous is another cation , considerable nitrogen will be tied to the clay particles, with a high CEC soil, say >30 meq/100g.
If split applications looks advantageous, look at your management requirements and consider applying half again more on one strip and half rate on a different strip and try equalize out the nitrogen with the Spring application.
As you work yourself into Old Age keep up the good work. Still remember a lot will depend on how the micro climates effect your production.
Possibly you can interest a researcher to do the appropriate replications and the measuring with a micrometer, over a number of years to provide a more precise evaluation. Keep in mind you are in the business of production agriculture rather than agricultural research.
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Winter wheat
