This study is concerned with establishing a uniform experimental protocol for the determination of phenolic extractives, which play an essential role in durability wood selected species included field tests. European larch (Larix decidua), Norway spruce (Picea abies), Scots pine (Pinus sylvestris), oak (Quercus sp.), sweet chestnut (Castanea sativa), and black locust (Robinia pseudoacacia) were...