Eric Hanocq, manager of the experimental unit of Estree Mons (GCIE) of the INRAE in a field of beetroots with plants contaminated by the jaundince disease, caused by the spreading of green aphids. Sick beetroots an be spotted by the yellow leaves instead of green. Estree Mons, France, October 7th, 2020. Photo by Daniel Derajinski/ABACAPRESS.COM