This is the 10212th most frequent Russian word.
благоприятными
Favorable.
The word "благоприятными" in this sentence refers to conditions being suitable or advantageous for a specific purpose (plant cultivation).
Эти условия являются очень благоприятными для выращивания растений.
These conditions are very favorable for growing plants.
Here, "благоприятными" describes an expected outcome being positive or desirable.
Мы надеемся на благоприятными исход события.
We hope for a favorable outcome of the event.
In this example, "благоприятными" attributes advantageous or comfortable characteristics to the weather conditions, aiding the trip.