Very small shiny black beetles sometimes with a yellow stripe running along each wing case. They eat small, circular holes on the upper leaf surface which often do not go all the way through the leaf. Heavy attacks can kill seedlings. Flea Beetles affect a range of plants including Brassicas including Swede, Turnip, Radish,aubretia, wallflowers, Stocks and Alyssum.
There is no chemical available to control this pest on beetroot.
Cultural measures: Remove all plant debris. Thoroughly prepare soil before planting. Protect seedlings through the vulnerable seedling stage by sowing when weather conditions allow rapid germination, protecting seedlings and young plants with fleece until established.