Striped stem borer biocontrols identified
Two indigenous parasitoids are promising candidates for use as biocontrol agents against rice striped stem borers ( Chilo supressalis) in north-east China, according to a study by Chinese researchers published in the Journal of Pest Science. Striped stem borers are the most economically damaging rice pest in the north-eastern provinces of Liaoning, Jilin and Heilongjiang. Resistance to the insecticides, monosultap and triazophos, is already established in some C suppressalis populations. Resistance has also been documented to newer active ingredients such as fipronil and abamectin, the researchers point out.