Agronomist Andrew McGuire explains why there is not enough manure or compost available – and can never be enough – to replenish soil fertility at a systems level. Studies that show improved outcomes on single farms are not measuring improvement at a systems level.
Can we produce enough manure to serve as a major source of soil nutrients? Agronomist Andrew McGuire shows the limitations due to entropy make it impossible for manure to make up more than a portion of nutrient replenishment.
Breeding nitrogen-efficient plants could boost crop productivity and dramatically reduce greenhouse gas emissions while reducing fertilizer use.
NutrientStar, which assesses fertilizer management products and tools using field trials and in-depth scientific reviews, was a game changer for farmers. Prior to the launch of the program last year, there was no expert review program to help farmers determine what tools would work as advertised.
The only downside of the program was its limited utility. Farmers had no easy way to extrapolate results from the relatively few number of field trials performed thus far to their own locations. Now, a new geospatial feature called the Technology Extrapolation Domain (TED) framework will make NutrientStar accessible to tens of thousands of additional farmers across the Corn Belt.
I like to think of it as NutrientStar on steroids.