To raise awareness of sustainable food practices, the third annual Sustainable Food and Farm Conference will be hosting a variety of farming-related workshops and presentations from speakers this weekend. “We saw it as an opportunity to get our farming community together and create more awareness,” said Dennis McDonneil, conference organizer. “What Nevada County has going on agriculturally is pretty extensive.” There will be multiple workshops going on throughout the day with a wide variety of topics, some of which include a presentation involving aquaponics by Will Allen, a talk by Temra Costa, writer of “Farmer Jane: Changing the Way We …