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Fungicides And Potency

Fungicide selection can be a challenging process, and growers often need to take into account many factors in deciding on a product.  Disease history, variety susceptibility, cost, and performance are important factors that go into the overall equation for selecting a product.  One statement you may hear sounds something like this:
 
“I’m going with Product X because it has more of triazole1 than Product Y, which has a lower amount of triazole 2 for this price”.
 
Let’s change that statement around, but this time let’s say the individual is in the demolition business.  “I’m going with black powder over plastique because I get less plastique for this price.”
 
That statement is true, but the amount of powder needed to do the same job as a given amount of plastique is much greater.  Thus, the comparison doesn’t really make sense.
 
The same goes for our fungicides.  Potency can vary significantly within a fungicide class.  Thus you may only need to go out at a 6 oz rate for one product to achieve the same level of disease suppression that you may achieve at a 10 oz rate for another product.  In addition, the inactive ingredients play vital roles in the performance of fungicides.  Premixes are another issue, as sometimes synergism occurs-the activity of the actives in a mixture are greater than what would be expected if they were applied solo.  Keep this in mind going into the field season.
 

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Why Your Food Future Could be Trapped in a Seed Morgue

Video: Why Your Food Future Could be Trapped in a Seed Morgue

In a world of PowerPoint overload, Rex Bernardo stands out. No bullet points. No charts. No jargon. Just stories and photographs. At this year’s National Association for Plant Breeding conference on the Big Island of Hawaii, he stood before a room of peers — all experts in the science of seeds — and did something radical: he showed them images. He told them stories. And he asked them to remember not what they saw, but how they felt.

Bernardo, recipient of the 2025 Lifetime Achievement Award, has spent his career searching for the genetic treasures tucked inside what plant breeders call exotic germplasm — ancient, often wild genetic lines that hold secrets to resilience, taste, and traits we've forgotten to value.

But Bernardo didn’t always think this way.

“I worked in private industry for nearly a decade,” he recalls. “I remember one breeder saying, ‘We’re making new hybrids, but they’re basically the same genetics.’ That stuck with me. Where is the new diversity going to come from?”

For Bernardo, part of the answer lies in the world’s gene banks — vast vaults of seed samples collected from every corner of the globe. Yet, he says, many of these vaults have quietly become “seed morgues.” “Something goes in, but it never comes out,” he explains. “We need to start treating these collections like living investments, not museums of dead potential.”

That potential — and the barriers to unlocking it — are deeply personal for Bernardo. He’s wrestled with international policies that prevent access to valuable lines (like North Korean corn) and with the slow, painstaking science of transferring useful traits from wild relatives into elite lines that farmers can actually grow. Sometimes it works. Sometimes it doesn’t. But he’s convinced that success starts not in the lab, but in the way we communicate.

“The fact sheet model isn’t cutting it anymore,” he says. “We hand out a paper about a new variety and think that’s enough. But stories? Plants you can see and touch? That’s what stays with people.”

Bernardo practices what he preaches. At the University of Minnesota, he helped launch a student-led breeding program that’s working to adapt leafy African vegetables for the Twin Cities’ African diaspora. The goal? Culturally relevant crops that mature in Minnesota’s shorter growing season — and can be regrown year after year.

“That’s real impact,” he says. “Helping people grow food that’s meaningful to them, not just what's commercially viable.”

He’s also brewed plant breeding into something more relatable — literally. Coffee and beer have become unexpected tools in his mission to make science accessible. His undergraduate course on coffee, for instance, connects the dots between genetics, geography, and culture. “Everyone drinks coffee,” he says. “It’s a conversation starter. It’s a gateway into plant science.”