The current database is part of the FEM growth and yield database, a collection of growth and yield data from even-aged monocultures (douglas fir, common oak, poplar, Japanese Larch, Norway spruce, Scots pine, Corsican pine, Austrian pine, red oak and several other species with only a few plots, even-aged mixed species forest plots, uneven-aged natural forest, uneven-aged selection forest and roadside plantations of poplar. The FEM growth and yield data base is currently supervised by Jan den Ouden and Frits Mohren.
The growth and yield research on poplar roadside and other line plantation was initiated by prof. dr. J.H. Becking in 1951. During almost five decades the project was supervised by A. van Laar, P.G. de Vries, J.H. Hildebrand and H.H. Bartelink. The project stopped after measuring the last remaining stand in 1997. Within the overall database it is called study 13.