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Steam: Sustainable management for weeds, soil pests

SALINAS, Calif. -- Steam treatment of soil offers growers a viable alternative to chemicals and a money-saver for organic farmers. It also benefits farm laborers by reducing their exposure to potential harm, said graduate student Erika Escalona. She is assessing the impacts on weeds, soil-borne disease and the soil biome of steam treatments used to disinfest lettuce and spinach fields in the Salinas Valley. 

Smoke From megafires puts orchards at risk

Long-term smoke exposure from massive wildfires lowers the energy reserves of orchard trees and can cut their nut production by half, researchers at the University of California, Davis, found. The smoke can affect trees for months after a megafire, depressing their bloom and the next season’s harvest.