Yeah, the aphid doesn't like sand. Yes. Clay soils crack and make little avenues for those phloxer to get around. The aphids creep and crawl around the roots and eat them. In sandy soils, those cracks don't occur just like you see when it gets wet and dry at your home. If you have a sandy area, the sand doesn't create those avenues. So the phloxure can't attack and kill in super sandy soils. So a lot of preserved grapevine genetics have been preserved. (15:04–15:09)
CLAIM
Asserts that sandy soils do not crack like clay soils, preventing phylloxera movement.
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