Don’t clear native vegetation if you want high crop yields

South Australian ecologists confirm that native vegetation is crucial for crop yields and should be preserved in agricultural areas.

A UniSA study on the Yorke Peninsula found that canola and faba bean pods within 200 metres of native vegetation had significantly higher yields—up to 20% more for canola and 12% more for faba beans—due to pollinating insects.

PhD student Bianca Amato noted that with only 13% of native vegetation remaining, roadside vegetation is often the last refuge for pollinators. “Both fragment and roadside vegetation boost pollination and yields, yet roadside vegetation is frequently cleared.”

The study challenges the practice of clearing native vegetation, suggesting it may reduce long-term productivity. Researchers urge governments to incentivise farmers to restore native vegetation for both biodiversity and higher yields.

“Strips of trees and bushes are more than just scenery—they are vital for pollinators and crop success,” Amato said. Protecting native vegetation offers a simple way to enhance both agriculture and ecological health.