John realized that his orchard has been invaded by certain harmful invasive plants.  these plants are consuming all the soil nutrients and water, and they are outcompeting native plants.  john decided to cover the invasive plants with black plastic for one growing season.  which method did john use to control the invasive species?

John used smothering as the method to control the harmful invasive plants in his orchard. Smothering is an example of a manual method of control and it works best in a small population of invasive species. Smothering involves covering the invasive species with a barrier that is highly impenetrable for one growing season in order to prevent these species from thriving in the environment.

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