Invasive Species Compendium

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Abstract

First report of fungal complex causing grey necrosis of hazelnut in Chile.

Abstract

During the productive stage of hazelnut in La Araucanía, Chile (October-December 2018-19), symptoms consisting of a brown-greyish spot were observed occurring at the bottom of the nut and enlarging upwards to the apex, and affecting approximately 30% of plants, mainly cv. Barcelona. In severe infections the bracts were also affected. The causal pathogens were isolated and identified as Fusarium sporotrichioides, Alternaria alternata, Diaporthe sp., Phomopsis sp. and Neofusicoccum sp. based on morphological, molecular and pathogenicity analyses. This is thought to be the first report of grey necrosis on hazelnut from Chile.