There’s a new sustainable ag technique in town, and it’s cleaning up

Grist
By Nathanael JohnsonAug 25, 2015, 6:00 am134 pts
The farming technique known as push-pull — which involves planting grasses with special properties to protect crops — started out as a rudimentary defense against stem borer insects. But it just keeps getting more sophisticated. It has evolved to fight off parasitic weeds, while also providing animal fodder…

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