Warmer temperatures increase the metabolism and reproductive rates of the pest
Fall Armyworm was first reported in July 2018 in Karnataka. Ever since, it has spread to its neighbouring states. Reports are now coming from West Bengal and Bihar as well. The initial damages are widespread as the pest is a voracious feeder. But we have reacted quickly. The Karnataka government, for example, has issued ad hoc recommendations for emergency response against it.
Used as an effective method of controlling invasive species, biological control (or biocontrol) is the term given to the use of living organisms for controlling pests and invasive species. It can provide an effective, environmentally-friendly and cost-efficient way of controlling pest populations, helping to restore crop yields and farmer’s profits. However a recent study, focussing on invasive cassava mealybugs, has shown that biocontrol can also have some surprising knock-on effects.
Parthenium hysterophorus is a highly destructive weed which has invaded and is widespread in around 48 countries in Africa, Asia, and the South Pacific. In Pakistan the weed is spreading rapidly westwards and southwards across both rural and urban landscapes, affecting native ecology and harming agriculture.
Eight oriental fruit flies (Bactrocera dorsalis), considered the world’s worst invasive fruit fly, have been found at two monitoring stations in Italy. Annually, there are several reports of this species being found in infested fruit in France, Switzerland and the UK, and one individual was found in a trap in an Austrian fruit market in 2016. This current report, however, is the first time this species has been found on agricultural land in Europe.
Dr Seehausen, a research scientist in risk analysis and invasion ecology based at CABI’s Swiss centre in Delémont, said a biological control agent – the parasitoid Ganaspis cf. brasiliensis – could soon be released to manage the invasive pest in Europe.
CABI in partnership with Ministry of Agriculture in Zambia through the National Agricultural Information Services (NAIS) has launched a national radio campaign focusing on the identification, prevention and management of fall armyworm. The campaign aims to help smallholder farmers in Zambia minimise fall armyworm losses and learn how to safely use chemicals.
2018 has been a bumper year for the CABI Invasives blog, with 4 times more posts than 2017 and over twice the number of views (over 20,000!). With so many articles published this year, we have compiled a list of the top 20 most read to round off 2018.