Forest nursery techniques is/are:

A.To make an afforestation/reforestation campaign a success a well-stocked nursery raised on scientific lines is a pre-requisite.
B.The adverse biotic and edaphic factors, failure of most of the planting campaigns in the country
C.Can generally be traced back to poor stock raised in ill-equipped nurseries by the staff, which is often ignorant of the modern techniques of nursery raising and its management
D.All of the above