A multiyear analysis tested whether management zone maps based on soil conditions, topography or other landscape features can reliably predict which parts of a cornfield will respond best to higher rates of seeding or nitrogen application. The study found that—contrary to common assumptions—crop-plot responses to the same inputs vary significantly from year to year. The most unpredictable factor—the weather—seemed to have the biggest impact on how the crops responded to these inputs.
Click here for original story, Management zone maps of little use to corn growers, study finds
Source: Phys.org