Bloodworms the search for the X factor

Bloodworms are the larvae of midges, and are major pests of aerially-sown rice crops. At least one preventative insecticide treatment has to be applied each season to protect seedlings during crop establishment.

Many species of bloodworms can be found in establishing rice crops, and the biology of some species is still poorly known. In contrast, the biology of the rice bloodworm (Chironomus tepperi, Figure 1), which is the most serious pest species during early establishment, is now fairly well understood. 

Mark Stevens, IREC Farmers' Newsletter, No. 171, Summer 2006