TY - JOUR AU - Sibbett, G. Steven AU - Van Steenwyk, Robert A. TI - Shredding “mummy” walnuts is key to destroying navel orangeworm in winter JF - California Agriculture JO - Calif Agr Y1 - 1993/09/01 VL - 47 IS - 5 SP - 26 EP - 28 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v047n05p26 AB - Winter orchard sanitation is a major component of navel orangeworm (NOW) control in walnuts. “Mummy” nuts remaining in the trees shelter overwintering NOW. Once nuts are removed from the trees, shredding to destroy the protective shell ensures maximum NOW mortality.