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Using an NIR Spectroradiometer to Identify Plant Diseases

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Using an NIR Spectroradiometer to Identify Plant Diseases

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NIR spectroscopy can be an effective tool for identifying plant diseases that affect agricultural production. An NIR field spectroradiometer can measure key indications of biotic stress caused by disease. Examples of diseases that can be identified with an NIR spectroradiometer include aflatoxins in corn, late blight disease, yellow leaf curl virus in tomatoes, leaf spot or powdery mildew in sugar beets, yellow rust in wheat, Fusarium infection in barley, and rice blast, to name a few. Infected leaves have a different spectral image than healthy leaves. The symptoms and stress caused by the pathogens change pigmentation, alter surface temperature, and reduce chlorophyll content.

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