Bulletin of Insectology (2019) 72, 29-34

Davide Scaccini and Lorenzo Furlan (2019)
Outbreak of Nysius cymoides on second crop soybean Glycine max and proposal for Integrated Pest Management
Bulletin of Insectology 72 (1), 29-34
Abstract: The present paper describes an outbreak of the false chinch bug Nysius cymoides (Spinola) (Hemiptera Lygaeidae) in a second crop soybean, Glycine max (L.) Merr. (Fabales Fabaceae), in the Veneto region (northern Italy), which occurred during summer 2017. Pest presence was also recorded in the same area the following year. In 2017, the massive presence of this pest (up to 250 specimens/plant) caused severe damage to the soybean crop, such as underdeveloped plants, dead spots on the leaves or dead plants. Pest outbreaks occur in droughty and warm periods; they can be related to ground litter and depend on the previous crop, as described for other species of the same genus. While canola increased the population of N. cymoides that damaged the following soybean crop, no false chinch bug presence was found in the soybean after winter wheat in the same area. Considering field observations, a provisional threshold for second crop soybean based on pest presence in previous crop litter is provided (10 N. cymoides specimens/250 mL of litter). Finally, a specific Integrated Pest Management procedure is suggested for this pest.
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Database assignments for author(s): Lorenzo Furlan

Research topic(s) for pests/diseases/weeds:
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Nysius cymoides	Soybean (Glycine max)	Italy