THIRTY YEARS OF FRANCE' EXPERIENCE IN THE PRODUCTION OF DISEASE-FREE GARLIC AND SHALLOT MOTHER BULBS
The complexity of the virological situation in these vegetatively propagated alliums was exposed through the use of the electron microscope. Only in 1981 was this situation fully understood for garlic, by the use of the immuno-electromicroscopy method.
In some years, problems are caused by very early and numerous aphid flights. As a consequence, the first generations of multiplication are increasingly grown under insect-proof screenhouses. Annual French-certified mother-bulb production is about 2 500 tons for garlic and 400 tons for shallot. The partners of the research institute for this production scheme are cooperatives or farmers' associations.