Wheat Stem Sawfly

Wheat stem sawfly
An adult wheat stem sawfly in wheat at the High Plains Ag Lab.

Wheat Stem Sawfly Emergence — Field Notes from Early June

June 7, 2021
Recent observations indicate very high populations of wheat stem sawfly in Nebraska wheat fields, with emergence not only from field edges but also deep within fallow fields. Documentation on infestations is encouraged for successful fall sawfly management.

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Overwintering sawfly larva
The recent temperature extremes will not provide adequate control of pests such as this overwintering sawfly larva.

How Have the Cold February Temperatures Affected Insect Overwintering in Nebraska?

February 26, 2021
Extension specialists detail what effect February's bitter temperatures and snow cover may have on overwintering insects in Nebraska.

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sawfly larva within its pupal chamber
Wheat stem sawfly within its pupal chamber.

Wheat Stem Sawfly in 2020

September 1, 2020
This article provides a brief background on how the wheat stem sawfly arrived here, ideas on how we might manage it in Nebraska and thoughts on why we saw reduced damage in some regions while others had the most damage they have ever seen.

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wheat stem sawfly adult

Wheat Stem Sawfly Infestations Continue to Impact Harvest in the Nebraska Panhandle

July 23, 2020
WSS damage in winter wheat was first noted in Nebraska in the early to mid-1990s in Banner County near the Wyoming border. It has continued to increase ever since and now is a very significant issue.

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fence row of a wheat field

Advances in Understanding the Management of the Wheat Stem Sawfly

January 28, 2020
Over the past few decades, WSS populations have greatly increased and expanded in the Nebraska Panhandle, becoming the most economically significant pest of wheat.

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Wheat stem sawfly adult

Management Decisions Impact Wheat Stem Sawfly Populations

August 30, 2019
University research in the Nebraska Panhandle suggests that changing two management strategies may help significantly reduce wheat stem sawfly pressure in winter wheat. Over the years, the sawfly has become a major pest in wheat with few known control measures.

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A field of lodged wheat with an inset photo showing wheat stubs where the wheat stem sawfly overwinters.
Figure 1. Wheat lodging due to wheat stem sawfly. Figure 2 (inset). Wheat stubs remaining in field after sawfly feeding. The sawfly will overwinter in the stub and leave the plant in the spring.

Increased Wheat Stem Sawfly Populations In 2018

August 30, 2018
One of the newest challenges to wheat growers is the wheat stem sawfly, which can girdle stems, causing lodging and yield losses. University research may offer a clue to new control practices.

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wheat stem sawfly in a wheat stem

Cultural Management Options for Wheat Stem Sawfly

June 7, 2018
Sawfly management in wheat requires a diversified approach using a number of tools. Growers who know which fields have greater levels of infestation can help manage the effects of sawfly this year as well as next year. Fields with high infestations should be harvested first, if possible.

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