Image: Common Hazelnut Diseases Identification Guide

The image is a detailed, landscape-oriented visual identification guide titled "Common Hazelnut Diseases – Identification Guide." It is designed as an educational poster with a natural, agricultural aesthetic, using green, tan, and yellow tones that evoke orchard and field conditions. A wide green banner spans the top, featuring the main title in large, bold lettering, followed by a smaller subtitle indicating that the image serves as an identification guide. The layout is organized into multiple clearly defined panels, each dedicated to a specific disease that affects hazelnut trees, with photographs and callout labels highlighting key symptoms.

The upper left section focuses on Eastern Filbert Blight. It includes a close-up photograph of a hazelnut branch showing elongated cankers with black stromata embedded in the bark. Additional imagery shows affected leaves with browning and dieback, visually reinforcing the progression of the disease from branch infection to leaf decline. Labels point directly to the cankers and note leaf dieback as a characteristic symptom.

The upper right section presents Hazelnut Leaf Spot. A prominent image shows a green hazelnut leaf dotted with small, round brown lesions surrounded by yellow halos. Adjacent images depict more advanced stages, including leaves turning brown and dropping from the tree. Text annotations emphasize small brown spots with yellow halos and leaf defoliation as key indicators.

The lower left section is dedicated to Powdery Mildew. Photographs show hazelnut leaves coated with a white, powder-like fungal growth. Additional images illustrate leaf distortion, with curling and misshapen leaf edges. Labels clearly identify the white fungal coating and associated distortion, making the disease easy to distinguish from others.

Centered along the bottom row is Hazelnut Anthracnose. This section contains images of leaves with irregular dark lesions, along with a photo of blighted nuts and affected twigs. The visuals highlight both foliar damage and impacts on developing nuts, with labels noting dark lesions on leaves and twig dieback with blighted nuts.

The lower right section addresses Bacterial Blight. Images show leaves with dark, water-soaked lesions and a branch displaying bud and shoot dieback. The symptoms appear glossy and dark compared to fungal spots, and annotations call out water-soaked lesions and dieback of buds and shoots.

A concluding banner runs along the bottom of the poster with a warning message encouraging viewers to watch for these hazelnut health issues. Overall, the image combines high-quality photographic examples with clear text labels in a structured grid, making it a practical reference tool for growers, students, and extension educators seeking to identify common hazelnut diseases in the field.

The image is related to: A Complete Guide to Growing Hazelnuts at Home