Over the past week the native green stink bug, Acrosternum hilare (Say) [Chinavia hilaris (Say)] (Hemiptera: Pentatomidae) has been observed moving from deciduous forest trees to tree fruit with egg laying and nymphs present on agricultural commodities. Nymphs of green stink bug undergo 5 stages of development and appear strikingly different from the adult. This economic pest of apple, peach and pear is also a pest of soybeans, tomatoes and cotton in the eastern US. In August, 2012 drought conditions led to severe feeding from the stink bug complex resulting in 20% injury in three sites in Columbia, Dutchess and Ulster Counties.
At the Hudson Valley Lab we have not yet seen populations that warrant management.
Both green and brown marmorated stink bug contributed to this injury, producing both cosmetic as well as reduction in fruit quality. In general stink bugs have become a late season challenge to integrated pest management programs requiring the use of broad-spectrum insecticides in the organophosphate, carbamate, and pyrethroid class of chemistry. The neonicotinoid class is considered a reduced risk group of insecticides to replace the organophosphate class for pest management. One of the more effective insecticides in this group, Dinotefuran, has been found to be very effective in managing the stink bug complex. Yet the product not yet been allowed by DEC to receive a NYS label or Section 18 for use on tree fruit against the stink bug complex.
An alternative pest management tool in place of the older classes of insecticides is the neonicotinoid, Actara. Actara (A.I. Thiamethoxam) has conservative 35 DTH and A.I. per acre restrictions. In New York State, do not exceed 0.172 lb. a.i./A (11 oz.) of Actara or thiamethoxam containing products per acre per growing season on Pome Fruit. In light of these restrictions, the use of the pyrethroids Bifenthrin (Bifenthure, Brigade) or Fenpropathrin (Danitol) have excellent efficacy against the SB complex and are relatively ‘user friendly’ with lower mammalian toxicity but greater reduction of biological control agents such as the predatory mite T. pyri and predaceous beetle complex.