fruitful
adjective /ˈfruːtfl/
  /ˈfruːtfl/
- producing many useful results synonym productive
- a fruitful collaboration/discussion
 - Official manuals can be a potentially fruitful source of information.
 - The research has proved extremely fruitful.
 
Extra Examples- This research has been particularly fruitful in helping our understanding of the disease.
 - It was a very fruitful discussion.
 - There was a close and fruitful collaboration between scientists and engineers.
 - Sometimes the questionnaires had remarkably fruitful results.
 
Oxford Collocations Dictionaryverbs- be
 - prove
 
- extremely
 - fairly
 - very
 - …
 
- in
 
 - (literary) (of land or trees) producing a lot of crops