Over the long run, apple orchards that use organic farming methods cost no more to run than, and are just as productive as, apple orchards using conventional methods.
Evidence
Over the long run, apple orchards that use organic farming methods cost no more to run than, and are just as productive as, apple orchards using conventional methods.
Organically grown apples tend to be better tasting.
Conclusion
Organic orchards are likely to be more profitable than conventional orchards in the long run.
Evaluate
To reach this conclusion, we need to assume that an orchard which grows apples that taste better is guaranteed to be more profitable.
better tasting → more profitable
This link is missing from the argument as it's written.
Goal
We're looking for an answer which makes this missing link more likely to be true. We want more evidence showing that better tasting apples are more profitable.