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Are You Prepared For 2023 Phytophthora Pressure?

October 31, 2022
soybean plant infected with phytophthora

Phytophthora can infect plants at anytime during the planting and maturing stages.

As you’re planning ahead for next season, don’t overlook early-season diseases like Phytophthora. In 2021, 36 University Extension Plant Pathologists estimated an annual average of over 25 million bushels of soybean yield loss due to the disease.1 This year, ND, MN, OH and other states reported high Phytophthora pressure, which could increase the risk of infection in 2023.

Phytophthora is one of the most destructive early-season pathogens and significantly limits plant stand establishment in soybeans. It not only reduces potential yield by killing seedlings and reducing the root efficiency of mature plants, but it can infect plants at any time during the planting and maturing stages, if the conditions are right.

Due to the increased reports of Phytophthora pressure this year, here are some tips to help you protect your soybean crops in 2023:

  • Be aware: Knowing what to look for can help you minimize the damage Phytophthora causes in soybean fields. The University of Minnesota Extension recommends looking for symptoms at each season stage since the infection can occur from the beginning to the end of the growing season.
    • Early-season: Infected seedlings and plants will have stems that will likely appear bruised with yellowing leaves.
    • Mid-to-late season: Brown lesions may start to appear on the roots as they begin to rot. Leaves will continue to yellow and wilt, staying attached to the plant even after it begins to die.
  • Incorporate Phytophthora-resistant varieties: Planting Phytophthora-resistant varieties will set the foundation for managing the disease and protecting your soybean yield.
  • Document your field history: Relying on the historical data of your fields can significantly help you prepare for the yearly threats you face.
  • Use a robust seed treatment: Selecting a seed treatment that contains effective modes of action against Phytophthora and allows the establishment of seedlings and inherent native gene resistance will protect your investment.

We recommend CruiserMaxx® APX seed treatment to better protect against Phytophthora and other early-season insects and diseases, like Pythium. It has 2 highly effective Phytophthora protection active ingredients and combines proven protection with picarbutrazox (PCBX), the most powerful Pythium and Phytophthora-fighting molecule in existence.

bar graph showing CruiserMaxx APX provides between 3 and 5 more bushels per acre than Acceleron, Lumisena and a Base

2018 Syngenta internal and external trials (TNA054A3-2018US); n=7: OH, IL, MI, KY, IA, NE, MN.

In an Ohio State University Phytophthora trial, CruiserMaxx APX was the only seed treatment to deliver a statistically different 5-bushel yield advantage compared to the check treatment; the competitors included Lumisena™ and ethaboxam compounds, which did NOT beat the untreated check.2

See how to get supercharged protection from day 1 by visiting SyngentaUS.com/CruiserMaxxAPX.

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1 Plant Health Progress 2021 Vol. 22 No.4 pp 483-495

2 2018 Ohio State University Phytophthora trial; α = 0.05

All photos are either property of Syngenta or are used with permission.

Syngenta hereby disclaims any liability for third party websites referenced herein.

Product performance assumes disease presence.

Performance assessments are based upon results or analysis of public information, field observations and/or internal Syngenta evaluations. Trials reflect treatment rates commonly recommended in the marketplace. 

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