The phrase "a productive source of" is correct and usable in written English.
You can use this phrase when you are describing something that provides something useful or beneficial. For example, "Yoga has been a productive source of relaxation and stress relief for many people."
We hypothesized that bioprospecting areas of historic mining activity could yield microalgal species which have evolved to be tolerant to extreme environments, in particular low pH, and could act as a productive source of biomass in a typical open pond production setting.
In Indonesia, oil palm, a productive source of cooking oil and biodiesel, offers the biggest reason to clear.
The results highlight the potential of using A. unedo fruits bio-residues as a productive source of catechin.
The SNP validation success rate in RJs was similar to that in gene sequences, showing that single-copy RJs are a productive source of useful SNPs.
The findings of this study also suggests that endophytes from harsh and competitive environments have potential to be a productive source for the discovery of useful drug leads for innovative and improved pharmaceuticals.
"That's a very productive source of information".
Marine organisms have been found to be a very productive source of metabolites with clinically interesting properties (1).
These estimates are consistent with those for other highly heritable, polygenic neuropsychiatric disorders, and predict that GWAS studies in ASDs will become an increasingly productive source of biological insight as sample size grows.
Current restoration efforts by Paepae o Heʻeia, a private non-profit dedicated to caring for Heʻeia Fishpond, aim to repair damaged or missing parts of the fishpond wall and return it to a working and productive source of food for the local community.
Ayurvedic medicinal plants have been the single most productive source of leads for the development of drugs, and over a hundred new products are already in clinical development.
