Citrus Greening, also known as Huanglongbing, was first confirmed in Grenada in 2016. The disease is caused by bacteria which are spread by the Citrus psyllid. The disease causes yellow blotchy mottling on leaves, small lopsided fruit and branch dieback, making the tree uneconomical. Due to Citrus greening’s potential to devastate Citrus yields, Grenada’s Ministry of Agriculture has launched a campaign to control the disease, which has been detected in almost every area of the island. In the video above, Thaddeus Peters, Agricultural Officer for the MoA’s Pest Management Unit, explains the importance and methods of controlling Citrus Greening. Continue reading
Last week, CABI confirmed that since it arrived in Africa in 2016, the Fall Armyworm (FAW) has been reported in 28 African countries, presenting a now permanent agricultural challenge for the continent. FAW mainly affects maize and can cut yields by up to 60%. In research funded by the UK’s Department for International Development (DFID), CABI estimate that, if not properly managed, the pest will cost 10 of Africa’s major maize producing economies a total of $2.2bn to $5.5bn a year in lost maize harvests.
Adapted from ‘Tomato leaf miner/ American leaf miner management in Agricultural production systems (Distribution, biology, damage and integrated management)’ written by Koppert Biological Systems.
The tomato leaf miner, Tuta absoluta, is a devastating pest of tomato. Originating from Latin America, T. absoluta has spread via infested fruits and packaging material to Europe, North Africa and the Middle East. Given its potential for crop destruction and rapid reproduction, it quickly became a key pest of concern in East Africa. Its primary host is tomato, but it also affects potato, aubergine, beans and others. Continue reading
The Fall armyworm, Spodoptera frugiperda, is a major invasive pest in Africa. It has a voracious appetite and feeds on more than 80 plant species, including maize, rice, sorghum and sugarcane. Another feature which makes it an incredibly successful invasive species is its ability to spread and reproduce quickly. CABI have developed a poster to show the life cycle of the Fall armyworm, which includes egg, 6 growth stages of caterpillar development (instars), pupa and adult moth. Click here to view the full poster, or read about the life cycle below. Continue reading
Huanglongbing (HLB), also known as Citrus greening, has been confirmed in Trinidad for the first time. The disease, which was detected on leaves from a lime tree in the north of the island, can cause devastating yield loss for Citrus growers and is regarded as one of the most important threats to global commercial and sustainable citrus production. Continue reading
Identifying armyworms usually involves taking the larvae that have caused the damage, waiting for them to develop in to adults and then studying the body and markings of these adults to identify the species collected. This process causes delays to identification, and could therefore delay action for what are some of the most ravaging crop pests in the world. However, scientists from CABI and Ghana’s Plant Protection and Regulatory Services Directorate have been able to speed up identification using molecular techniques to confirm the identity of fall armyworm (Spodoptera frugiperda) from the larvae alone.
This week we’ve been reporting from the 12th session of the Commission on Phytosanitary Measures, which successfully drew to a close, having produced concrete tools to support plant protection through the adoption of 25 International Standards for Phytosanitary Measures (ISPMs). Under the World Trade Organization’s Agreement on the Application of Sanitary and Phytosanitary Measures (SPS Agreement), the IPPC is recognized as the international standard setting body for plant health, and WTO members are encouraged to use these ISPMs to address phytosanitary concerns. When members apply these standards for plant protection, they are likely to be safe from legal challenge through a WTO dispute. A record number of ISPMs were submitted for consideration and adopted during the CPM, attesting to the continued demand for the development of standards.