Management of sugarcane pests at Ramu, Papua New Guinea.
Sugarcane is indigenous to New Guinea with several species of Saccharum and hundreds of cultivars present in Papua New Guinea (PNG). After 20 years of commercial sugar production in PNG, most of the insect pests encountered at the Ramu Sugar estate are native and several of these may have co-evolved with sugarcane. The noctuid moth, Sesamia grisescens, is the main stalk borer with estimated losses up to 31 t/ha of cane. A cicadid, Baeturia papuensis, and a whitegrub, Lepidiota reuleauxi, are important soil-dwelling pests. The leafhopper, Eumetopina flavipes, is the vector for Ramu stunt disease. Several other insect pest species and their management are discussed in this paper.