Sex and better apple crops
Codling moth is a small insect with coppery coloured wings that causes massive damage to apple and pear crops worldwide. During a warm night in spring, conditions will be right for the pupae (mainly found under bark or in the debris on the ground around tree trunk) to hatch and fly up into the tree. The female moths wait there to be mated by males before laying their eggs in the tree.
Japanese researchers have been able to synthesise the pheromone (sex attractant scent) which enables the male moths to find the females for mating, and have produced plastic strips impregnated with the scent. They can be used to either trap the males or to overwhelm an orchard with the scent, making it impossible for the males to find the females, who get sick of waiting to be mated and lay sterile eggs.
The Food Forest has eliminated any need to use toxic sprays and optimised yields and quality through a combination of these pheromone strips and running poultry through the orchard.