Research project has been getting good results
A Pennsylvania research project has been getting good results using 2986 Avenger coulters from Yetter Farm Equipment to inject liquid dairy manure in corn test plots.
"We're looking for ways to incorporate manure with minimal disturbance to the no-till soil," said Doug Beegle, the extension nutrient management specialist for Penn State. Their research measures the agronomic, economic, and environmental benefits of processes and equipment for manure incorporation in no-till.
Over the past five years, shallow-disc injection has been shown to reduce ammonia loss, phosphorus runoff, soil erosion, and production costs compared to traditional manure incorporation or surface application.
Doug said injection also reduces odor emissions, which can be important for farms in populated areas. "The only downside for commercial farms is that injection, in general, is a slower process than broadcasting on the surface," said Doug.
He added, however, that four commercial operations have tried the process as part of their project and found it is slower than broadcasting, but not as slow as they had expected. The bottom line from the work in Pennsylvania is that shallow-disc injection has been shown to be a sound alternative, with multiple benefits, for manure management in no-till systems.