Table 2. Description of the experimental sites: planted tree species, planting date, mechanical site preparation (MSP) treatment date, experimental design and characteristics of HE and RR treatments. Treatment names: DS+MS, deep scarifier followed by multifunction subsoiler; HE, herbicide; RR, regional reference.
Forest	Oak species	Pine species	Date of plantation	Date of MSP	Planting density (tree per ha)	Plot size: length (m) × width (m)	Number of replicates	HE treatment	RR treatments
Bord-Louviers	Quercus petraea	Pinus nigra subsp. laricio	Dec. 2010	Oct. 2010	2200	54 × 35	3	Glyphosate (5 L ha–1) each year for 3 years (HE3)	Asulam (10 L ha–1) applied in July 2010
Haguenau	Quercus petraea	Pinus sylvestris	Nov. 2011 Dec. 2012	Aug.–Sept. 2011	DS+MS: 2200 other: 3300	DS+MS: 56 × 35 other: 35 × 34	2	Glyphosate (6 L ha–1) each year for 4 years (HE4)	Disk harrow (Timberdisc© Grégoire et Besson, 8 disks, d = 660 mm) pulled by an 11-ton tractor (Fendt 930 vario TMS)
Villecartier	Quercus petraea	Pinus sylvestris	Dec. 2011	Sept. 2011	DS+MS: 2200 other: 3300	DS+MS: 54 × 24 other: 54 × 20	3	Asulam and Quizalofop-éthyl P (1.25 L ha–1) each year for 2 years (HE2)	Disk harrow (Crabe© Kirpy 7 disks, d = 660 mm) pulled by a 7-ton tractor (Valtra N111)
Rennes	Quercus petraea	Pinus sylvestris	Mar. 2012	Sept. 2011	DS+MS: 2200 other: 3300	DS+MS: 54 × 35 other: 36 × 35	3	Glyphosate each year for 2 years (HE2)	Disk harrow (Crabe© Kirpy, 7 disks, d = 660mm) pulled by a 7-ton tractor (Valtra N111)
Escource	Quercus robur	Pinus pinaster	Mar.–Apr. 2012	Nov. 2011 RR treat.: Feb. 2012	DS+MS: 2200 other: 3300	46 × 28	3	Asulam (10 L ha–1) single application in first year (HE1)	Mouldboard plow (Cullerier, 3 furrows, l = 450 mm) pulled by a 6.6-ton tractor (John Deere 7430)
Solférino	Quercus robur	Pinus pinaster	Feb.–Mar. 2012	Nov. 2011 RR treat.: Feb. 2012	DS+MS: 2200 other: 3300	52 × 28	3	Glyphosate (6 L ha–1) single application in first year (HE1)	Mouldboard plow (Cullerier, 3 furrows, l = 450 mm) pulled by a 6.6-ton tractor (John Deere 7430)