Some characteristics of wood wastes as raw materials of bark manure

Tbe application of bark manure, i.e. tbe compost of forest wastes, to fields is recommendable for maintaining pbysical and cbemical conditions of soil. However, tbe response of yields to bark manures is not always satisfactory. Tbis is sometimes attributed to tbe quality and quantity of addition (4) or duration of composting. Besides, tbe difference in wood species is presumably a large factor that may contribute to tbe cbaracteristics of bark manure (1, 2, 6). This note presents tbc results of tbe experiment conducted to clarify tbe traits of some wood species as raw materials of bark manure.