mummy nut

plural mummy nuts

1. A nut left over in a tree after harvesting.

   Current control practices involve mechcanical destruction of the overwintering mummy nut host and one or two summer sprays directed at the larval stage.

   1978, Abstracts of Submitted Papers - Pacific Branch, Entomological Society of America: Annual Meeting, Entomological Society of America. Pacific Branch, page 6

   2 more examples

   In 1990/1991, 27 percent of the nuts were infested with one or more NOW larvae or pupae. Infested nuts had an average of 1.19 +/− 2.99 larvae or pupae per mummy nut.

   1993, The Nut Grower, volume 13, page 18

   Mummy nut removal by shaking or hand-poling prior to bloom has become a common practice by growers in California, where the navel orangeworm is the most significant insect pest.

   2017, Frank G. Zalom, Evan Núñez, Roger A. Baldwin, “16: Almond Pests”, in Rafel Socias i Company and Thomas Gradziel, editors, Almonds: Botany, Production and Uses, CABI, →ISBN, page 378