Crops >Orchard Crops  Orchard sanitation talked up at almond symposium Todd Fitchette 2  | Jul 10, 2013 1. Walter Bentley, IPM specialist, discusses Navel orangeworm at the Southern San Joaquin Valley Almond Symposium in Kerman, Calif. 2. University of California farm advisor Roger Duncan, Stanislaus County, discusses almond issues during a break at the Southern San Joaquin Valley Almond Symposium in Kerman. 3. Hull split is a critical time in almond growth as it is also the time when naval orangeworms are able to get into the nut.