Soybean Vein Necrosis Virus

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听Soybean Vein Necrosis Virus

October 2024 | Written by:听Madeline Henrickson and Dr. Alyssa Koehler

Pest Background

Soybean Vein Necrosis Virus is an Orthotospovirus.
This virus can be seed borne or vectored by multiple thrips species.
Increased damage is observed in late planted soybeans.

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Identification

As the name implies, symptoms will follow leaf veins starting as yellowing (chlorosis) (Fig 1).
Yellowing will develop into red-brown lesions (Fig 2).
On the underside of the leaf, browning of the veins may be observed (Fig 3).

Fig 1: Yellow tissue at leaf vein caused by SVNV

Fig 2: Soybean vein necrosis virus lesions on a soybean leaf

Fig 3: Underside of soybean leaf with necrosis from SVNV

Management

Insecticide applications to control vectors are not successful since complete insect removal is not possible.
Use certified, disease-free seed to limit chance of seed transmission.
SVNB is not thought to impact yield but may reduce oil concentration and lower seed quality.

References

听听听听Crop Protection Network (2022, Jan 25). Soybean Vein Necrosis of Soybean. Retrieved from: 听听听听https://cropprotectionnetwork.org/encyclopedia/soybean-vein-necrosis-of-soybean

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Authors: Madeline Henrickson and Dr. Alyssa Koehler

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