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Home Agro News

Test plots help ensure better planting and seed decisions

admin by admin
December 2, 2022
in Agro News


While corn and soybean test plots don’t show the whole picture, agronomist Jim Rowley says they offer key insights.  

“Local strip plots are important to give a farmer the opportunity to observe and to evaluate which corn hybrids and soybean varieties work in that local environment or in that specific soil type,” Rowley says.  

Broad spectrum and replicated companywide research from LG Seeds are reinforced with local plot testing, giving dealers confidence in product placement. 


Evaluating plot results

Rowley encourages farmers to look at specific details to see the bigger picture when analyzing the results of plot tests and field trials.  

  • Is it a no-till or conventional tillage system? That can impact disease tolerance, which could be reflected in standability and lodging scores.
  • Consider the populations of the strip trials relative to your farming practices, as the population can impact standability.
  • What about the time of planting? One farmer may plant that plot early in the season and another may have time at the end of the planting season. There will be obvious differences in plant development throughout the growing season and harvest dates, resulting in different moisture and test weights at season’s end. 
Jim Rowley, LG Seeds agronomist, shares how to utilize plot test results for making future planting decisions (Image by LG Seeds)

What plot tests revealed in 2022

Rowley says in 2022, strip trials showed that full-season hybrids significantly outperformed short- and mid-season hybrids. That’s different from last year in regional performance, where mid-seasons performed relatively better. 

“The thing about the differing maturities is that it falls back on the development of that individual hybrid or that maturity and what critical growth stages it’s going through during the different stresses of an individual season,” he explains.  

According to Rowley, full-season hybrids missed the extreme heat when pollinating, whereas the short- and mid-season plants may have been going through pollination with a lot of heat stress.  

“It’s all about timing and how that can impact crop development,” he adds.  

In terms of specific hybrid and variety performance, Rowley offers this insight: 

  • Full season LG66C44 corn has been dominant through the majority of the Corn Belt.
  • Mid-season LG59C72 corn has been stable, offering above-average yield potential for that maturity, along with tar spot tolerance.
  • LGS3216E3 and LGS3784XF soybeans have been top performers.  

You can find out more about how LG Seeds performed this year in the Corn Harvest Update and 2022 Soybean Harvest articles.

Plot tests from LG Seeds can provide a localized view of hybrid and variety performance (Image by LG Seeds)

Making 2023 seed selection decisions

To use plot results to make future decisions, Rowley says farmers should plan to diversify maturity and vary their planting dates. “That way the nick of the critical pollination phase doesn’t always occur at the exact same time,” he says. “And it’s not just about the reproductive stage and pollination, but also about other developing things with kernel fill, trying to beat the first frost and a whole array of other environmental factors brought on by the weather.” 

Rowley encourages farmers to reflect on strip-trial differences to provide affirmation for the things that you suspect, “but don’t consider them the end-all when it comes to interpreting yield results,” he adds. 

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