Apple scab caused by Venturia inaequalis is one of the most economically important diseases of apple worldwide. Disease management is largely based on the frequent applications of fungicides, but fungicide resistance is a common problem. Demethylation inhibitor (DMI), methyl benzimidazole carbamate (MBC) and quinone outside inhibitors (QoI) fungicides have been commonly used for controlling apple scab for many decades worldwide.
Scientists at the Kazakh Scientific Research Institute for Plant Protection and Quarantine have carried out a survey of fruit crops in 13 regions of Kazakhstan to identify the occurrence and spread of fire blight, the range of affected crops, and the identification of infection reserves. The results showed that the disease was mainly concentrated in the south and southeast of Kazakhstan, in the main fruit growing zone.
Dr. Manjul Dutt thinks possibly so. Dutt, a research assistant scientist in Horticultural Sciences with the University of Florida has been observing finger lime growth in Florida for almost a decade and has made an interesting discovery. “It seemed that when the surrounding trees around the finger lime trees started getting HLB and declining, the finger lime trees continued thriving,” says Dutt.
Plums are commercially cultivated worldwide for the rich nutrient value of their fruit. In May 2019, plums with symptoms of fruit rot were collected from fields located in Liuma town, Guizhou Province, China. The incidence of the disease varied from 10 to 20%, which was observed in 15 plum orchards (18 hectares) surveyed. Estimated yield loss was from 5 to 10% for each field.
On March 9, the Plant Health Service of the Region of Murcia announced the detection for the first time of South African "cotonet" (Delottococcus aberiae) in the region, in an orange plantation in the area of La Arboleja, in the municipality of Mula. The Plant Health Department came to this plot due to the alert raised by the Mula Regional Agrarian Office, which requested an investigation into the possible presence of the South African "cotonet" in it, upon detecting fruits that presented some anomalous deformities.
A small consortium, the Associazione Marrone dolce di Pieve di Rivoschio (Sarsina) in the province of Forlì-Cesena, has asked the local and regional authorities for help in tackling the problem of the chestnut tortrix (cydia). Last year we lost 30-40 per cent of our production and this not only jeopardises our budgets but also the the mountain areas where we work," explained president Ombretta Farneti.
Garcia-Bastidas says before the rise of the current global commercial banana called Cavendish, there was another type of banana, known as Gros Michel, but it's not used for global trade anymore because a fungus called Fusarium, which causes Panama Disease and wipes out crops that don't have immunity.
The 'Research and implementation of microbiological strategies to combat the growth of Xylella fastidiosa in the Valencian Community' project, which is being developed in the laboratories of the University of Alicante and in the Montgó Scientific Station in Dénia, aims to create a possible cure against the disease caused by this bacterium by using natural proteins encoded in its own genome.
Apple cv. Huangtaiping (Malus pumila) is grown widely in northern China for the production of jellies, preserves, and cider. In 2018, atypical scab symptoms were observed on fruits of Huangtaiping in Heilongjiang Province of China. The disease incidence was estimated at approximately 0.4%. Symptoms were scab-like black spots distinct from scab caused by Venturia inaequalis.
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