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New soybean cyst nematode solution

Syngenta has a new biological seed treatment to fight soybean cyst nematode

Last June, Syngenta Can­ada Inc. announced the registration and launch of a new biological seed treatment for soybean cyst nematode (SCN), Clariva pn. Clariva works in a direct and targeted way to reduce the growth and feeding of soybean cyst nematode. While soybean cyst nematode is currently not an issue in Western Canada, it’s good for growers to know about the possibility of emerging pest and solutions for them.

“Clariva pn-treated soybean seeds will take current SCN management programs to the next level by reducing SCN feeding and reproduction,” explains Nathan Klages, seedcare and inoculants product lead with Syngenta Canada. “This is a targeted, direct and proven solution that will help growers increase yields under SCN pressure.”

“Up until now, they haven’t really had an opportunity to have control of that pest,” he continues. “They’ve had genetics within their soybeans that are bred in to try and control the soybean cyst nematode.”

Farmers using resistant varieties are still finding that most varieties don’t provide control for all types of soybean cyst nematode.

The best solution should include a variety of tools, not just a seed treatment and resistant varieties. Specifically, Klages mentions the importance of an integrated pest management strategy, which includes smart rotation.

How does Clariva work?

The seed treatment uses P. nishizawae spores that work to infect and kill soybean cyst nematode. When treated seed is planted, the spores are released into the surrounding soil where they create a protective safe-zone for the plant’s roots as they grow.

As the plant grows, the protective zone not only kills soybean cyst nematode, but also prevents it from reproducing and feeding. Even their dead remains stay active in the soil. This has the added bonus of ensuring suppression throughout the season. Although Clariva does provide season-long protection in the root zone, if the roots grow outside of that root zone, SCN can still take hold.

“What we’re not saying is that it’s not going to give you subsequent years protection because moisture can dilute Clariva pn, so it won’t be enough for two years,” clarifies Klages.

Another bonus is that Clariva keeps working even under variable environmental conditions, including varying temperatures, moisture levels and soil pH.

Clariva works best when applied on varieties that are resistant to soybean cyst nematode. For growers looking for a nematicide and fungicide solution, Klages recommends Clariva pn with Vibrance Maxx. For growers looking for a nematicide and fungicide/insecticide solution, he recommends Clariva pn with Cruiser Maxx Vibrance beans.

Clariva has been registered in the U.S. for two years now with great success. It will be available all across Canada in 2016. Although the product is specifically targeted for southwestern Ontario where SCN has been on the rise in recent years, it will also be available in Western Canada, if there’s a need for it, said Klages.

“But it doesn’t seem that there’s a need for it now,” he said.However, Klages expects that it won’t be long before there’s a need for the product in Western Canada. “It’s not a question of if, but when it will show up.”

About the author

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Melanie Epp is a freelance farm writer based in Guelph, Ont.

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