Plantae | Fagales | Juglandaceae | Juglans | Juglans regia x nigra
Cardinael R, Mao Z, Prieto I, Stokes A, Dupraz C, Kim JH, Jourdan C. 2015. Competition with winter crops induces deeper rooting of walnut trees in a Mediterranean alley cropping agroforestry system. Plant and Soil 391(1-2):219-235.