Blog > January 2020 > FieldReveal -Digging Deeper

FieldReveal -Digging Deeper

January 23, 2020

1.23.2020 | FieldReveal Part 2; VR Seeding from Central Valley Ag on Vimeo.

FieldReveal; Digging Deeper Variable Rate Seeding

Variable population seeding has been a hot topic in precision ag circles for several years now. Our planter manufacturers have offered variable rate (VR) drives for quite some time. Ag retailers were not always able to provide prescriptions for VR seeding, which pushed many dealers to bring in their own agronomists to provide this service. At Central Valley Ag, we embraced this technology as soon as it became accepted on the equipment side. We have even offered our own equipment upgrades through third parties like Ag Leader to retrofit older planters for variable-rate seeding.  

Building a VR seeding prescription is not something that should be done in a vacuum. An Agronomist should have a good understanding of past yield variation, soil attributes such as soil pH, soil texture, slope of the field area, depth of topsoil, and soil fertility levels. The Agronomist also needs to understand the corn hybrids or soybean varieties being considered by the grower for that field.        

The logic that goes into a VR seeding corn prescription is usually quite different than the way we approach variable population soybean prescriptions. In a VR corn prescription, we will look at yield attributes such as actual yield, soil type, and slope and then vary population to better match potential yield. When yield potential is higher, we increase the seeding rate. This allows us to produce more corn ears in an area that can support more corn kernels while maintaining kernel weight and not aborting kernels. When yield potential is lower, we lower the seeding rate to reduce plant competition and stress from neighboring plants. Before building this prescription, we need to consider the hybrid and make sure we understand the ear flex of that hybrid as well as the potential problems with standability when populations increase.  

When making variable population soybean prescriptions, the thinking is a little different. In good yielding, highly productive areas of the field soybeans tend to bush out and may produce higher yields at slightly lower populations. In poor yielding, high plant stress areas, you often need to plant more soybeans to make up for smaller plants with more plants per acre. This also helps to hasten crop canopy in poorer areas reducing weed competition later in the season.  

The best way to get more comfortable with variable rate seeding and the new technologies available to you as a grower is to visit with your local CVA Field Sales Agronomist or your Regional ACS Manager.    

Learn more about FieldReveal

February 5, 2020 in Norfolk, Nebraska
CVA is hosting its first organic & transitional grower meeting. Join us at this meeting to hear speakers from the industry discuss soil fertility management for organic crop production. Vendors will be on hand to discuss OMRI certified products available through CVA. During lunch, a keynote speaker will talk about the current economics of large scale organic grain production in the Midwest. LEARN MORE


Posted: 1/23/2020 4:07:44 PM by Kelli Reznicek | with 0 comments

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