By Sam Otieno. Reblogged from SciDevNet
New research by CABI reveals that just five invasive alien species are causing US$0.9 – 1.1 billion in economic losses to smallholder farmers across six eastern African countries each year, equating to 1.8% – 2.2% of total agricultural GDP for the region. These losses are expected to grow to $1.0 – 1.2 billion per year over the next 5-10 years, highlighting the urgent need for coordinated responses at regional, national and international levels. Continue reading
The fall armyworm, Spodoptera frugiperda, is making headlines worldwide for all the wrong reasons. The caterpillar crop pest, native to the Americas, was reported in Africa for the first time last year and is now rapidly marching across the continent. It is a voracious pest of maize and other staple crops and has already destroyed tens of thousands of hectares of farmland. As such, it risks devastating smallholder livelihoods throughout Africa. Given that CABI scientists predict it could reach Europe and Asia in a matter of years, it looks set to quickly become a global problem.
The case for action against fall armyworm is overwhelming. On the ground, CABI will support national extension services to help farmers identify the pest quickly and accurately, contribute to awareness-raising and conduct studies to work out the best ways to control it that are not overly dependent on insecticides. Alongside these efforts, CABI also has a range of freely-available materials to help people understand and manage fall armyworm. Continue reading
New research announced today by scientists at CABI confirms that a recently introduced crop-destroying armyworm caterpillar is now spreading rapidly across Mainland Africa and could spread to tropical Asia and the Mediterranean in the next few years, becoming a major threat to agricultural trade worldwide.
A severe infestation of the papaya mealybug (Paracoccus marginatus) nearly wiped out papaya orchards in Pakistan before this largely farming South Asian country decided to replace conventional chemical pesticides that were ineffective, with natural predators that proved to be successful. Continue reading
The Global Forum on Agricultural Research (GFAR) has blogged about CABI’s activities in its ‘Partner Spotlight’ feature (12-15). One of these was our new invasive species programme which is re-posted here.
Millions of people living in rural communities around the world face problems with invasive species –animals, diseases, insects and plants – that are out of control and have resulted in damage costing more than an estimated US $1.4 trillion globally (Pimentel et al 2001). Yet, while we may have heard about the threats of losing biodiversity, some may have never considered how the addition of a species could be a detriment to agriculture and farmers. Continue reading
Invasions from non-native plants, animals and pathogens threaten the economies of the world’s poorest nations, according to a new study.
The study, published in Nature Communications (‘Global threats from invasive alien species in the twenty-first century and national response capacities’) found that one-sixth of the world’s land is highly vulnerable to invasion, including substantial areas in developing countries and global biodiversity hotspots.