Pulse School: Pea aphids, nesting dolls, and economic thresholds

Children have enjoyed playing with nesting dolls for years and years. You know the ones — where opening one doll leads to finding another, smaller doll inside. What does a delightful children’s toy have to do with pea aphids in lentil crops? Let’s explain. Pea aphids are parthenogenic and much like the beloved nesting dolls,... Read More