Forschungs- & Entwicklungsinformationsdienst der Gemeinschaft - CORDIS

Post-harvest sorting of organic carrot seeds based on maturity and/or specific gravity can be applied to improve the quality of the seeds

This result can be applied to the seeds after harvest, as a measure to reduce seed-borne infections with Alternaria radicina. It is based on 2 subsequent treatments (or processing steps) after threshing:

- sorting out the seeds with a low specific gravity with a gravity sorter, and
- followed by sorting out the most immature seeds with chlorophyll fluorescence sorting equipment.

With these post-harvest treatments it is possible to remove bad quality and Alternaria infected seeds, thereby improving the overall quality of the organically produced carrot seed lots and reducing the chance of introducing Alternaria in the production chain of organic carrots. This also lowers the risk of (myco)toxins in the production chain. Implementation of the result should lead to a better supply of high-quality organic carrot seeds for organic farmers, thereby closing the organic production cycle and guaranteeing a better harvest of the organic produce. The results can also be applied in conventional seed production systems, thereby reducing the amount of fungicides used to chemically control the disease.

Reported by

Plant Research International
Droevendaalsesteeg 1
6708 PB Wageningen
Netherlands
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