Home > Eliminate Botrytis and the Light Brown Apple Moth with Crop Protection Insecticides from Bayer

Eliminate Botrytis and the Light Brown Apple Moth with Crop Protection Insecticides from Bayer

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Light brown apple moth (LBAM) is generally considered to be the most important insect pest found within vineyards. Failure to manage LBAM with a proper Crop Protection Programme causes substantial risk to crop yield and quality, with the moth causing both direct and indirect damage.

Larvae emerging in the spring may cause direct yield loss by feeding upon flowers and newly set fruitlets, whilst the later summer generation can cause further fruit damage, particularly if hatching coincides with bunch closure. It is important to note that grapevines do not compensate for berry damage and as a consequence, damage to flowers and developing berries relates closely to yield loss at harvest.

In addition to direct damage, LBAM can aid in botrytis development as the larvae are an effective botrytis spore carrier, spores being carried both internally, and attached externally to their body parts. The feeding LBAM leaves exposed wound sites, and as the larvae move over and through the bunch, botrytis spores are distributed. When weather conditions favour botrytis development, these ‘high risk - high inoculum’ sites are the most susceptible to infection and typically exhibit extensive infection levels.

New insecticides such as Mimic, Success, Avatar and Proclaim, have been introduced in recent years to provide a range of management options. Bayer CropScience recommends that you contact your regular information sources for a suitable local management program.

Given both the direct (feeding) and indirect (botrytis infection) loss caused by LBAM, particularly during flowering and early bunch development, control is critical if yields and quality are to be optimised. An integrated approach to management is the most effective, including removal of weeds (which can be alternate hosts for LBAM) prior to budburst, monitoring and use of traps to determine pest numbers, and strategic insecticide applications.

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