Setting up for Success: Zone Sampling

September 26, 2019
This week on our Central Valley Ag Agronomy Focus video, Jason Kock, our ACS Mapping Center Specialist, and I discuss why growers would consider doing zone-based sampling of their fields. Most growers will take some soil samples to try to understand the nutrient levels in their fields. Some growers will try to use just one or a few samples to make fertilizer decisions.

With zone-based sampling we break a field up into zones based on soil and field characteristics like texture, elevation, previous yield, and satellite imagery of current and previous crops.  These zones are then sampled separately for fertilizer needs such as lime, phosphorus, potassium, sulfur, and zinc.   These zones can also be used for making variable population planting prescriptions or variable rate nitrogen application.  

Geographical Information Systems (GIS) hardware and software has allowed us to come a long way in the last 25 years.   We no longer have to just look at your operation on a field-by-field basis.  We can now look at 10 to 30-acre management zones or even sub-one-acre zone sub-areas.  The technology does not replace good agronomy but it lets us apply good agronomy on a subfield basis.  

See your Field Sales Agronomist or your Regional ACS Manager for more information on technology applications appropriate for your operation.  
by Tim Mundorf, Nutrient Management Lead
 
Posted: 9/26/2019 8:00:57 AM by Mallory Shoemaker | with 0 comments


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