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Optimizing corn and soybean seeding rates

The first half of April has been a little cooler than normal, with a wide range in rainfall totals, from an inch or more below normal in northwestern Illinois to 6-8 inches above normal in south-southeastern Illinois.

While it’s too early to consider planting in wet soil, there is no reason not to plant as soon as conditions allow.

Seed costs for corn and soybeans have risen considerably in recent years, along with genetic yield potential and improved ability of planted seeds to emerge and establish productive plants. This improvement, along with better planting technology, has decreased seeding rates for soybean over the past two decades.

Still, seed accounts for 34% of direct costs to produce soybeans in 2025, and 26% of direct costs to produce corn. While there’s little gain in risking yield loss from having too few plants in the field, we want to avoid having more plants than needed to maximize the economic return to seed.

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OFA Board Tour 2026 Perth County

Video: OFA Board Tour 2026 Perth County

From ag retail and grain to egg production, equipment manufacturing, dairy and more, the tour highlighted the incredible diversity of Perth County's agri-food sector and the people behind it. Getting out into communities across the province gives OFA directors valuable firsthand insight into the opportunities and challenges facing farmers and agri-businesses. These perspectives help inform the work of OFA around the board table. A big thank you to the Perth County Federation of Agriculture for hosting us, and to all of our hosts for sharing their operations, experiences and expertise with the OFA board ??