Possible Clues:

• Of course, warnings from those doing driving test studying the layout of Barna Woods, for example
• Second shot after warning shout clearing woods?
• Scientific study encompassing many branches
• Warnings test woodland management
• Science of trees
• 'The attempt of warning, of course, for woodwork (8)'
• Science field with timber
• Dean potentially benefiting from this management?
• How the golfer's warnings attempt to have woods that way
• The commercial business of growing and cultivating trees