Organic control is to start with recorded around 300 AD in China, when colonies of weaver ants, Oecophylla smaragdina, ended up intentionally positioned in citrus plantations to control beetles and caterpillars.[five] Also in China, ducks ended up Employed in paddy fields to take in pests, as illustrated in ancient cave https://www.bing.com/maps?osid=22b82889-712b-4cf4-8c92-0cbcc237352d&cp=47.630808~-122.143389&lvl=16&imgid=8b793b0d-8499-45b2-baa1-849154a35295&v=2&sV=2&form=S00027