Stripes of wildflowers across farm fields could cut pesticide spraying.
The stripy fields have been planted across England as part of a trial to boost the natural predators of pests that attack cereal crops.  See the Guardian newspaper report: –

https://www.theguardian.com/environment/2018/jan/31/stripes-of-wildflowers-across-farm-fields-could-cut-pesticide-spraying