One of the topics addressed at the International Banana Convention this week was one that is very important and detrimental to the industry: TR4. Altus Viljoen, who is a professor of AgroSciences in the department of plant pathologies at the University of Stellenbosch in South Africa, discussed the spread of the disease and what methods should be undertaken to minimize the damage.
Experts claim that the dramatic increase in South Africa’s average winter temperature over the past 40 years has altered the susceptibility of apples to fungal disease. It seems that fungi are showing a much faster adaptation rate to changing temperatures than apples. Apple orchards in the coastal regions of the Western Cape, such as Elgin, are affected to a greater extent by rising winter temperatures than those in the colder inland regions such as the Koue Bokkeveld.
Enza Zaden reports it found a solution for tomato growers to beat the devastating Tomato Brown Rugose Fruit Virus (ToBRFV). Their tomato breeding team has identified the gene that provides high resistance to the worldwide rapidly spreading virus. Sergio de la Fuente van Bentem, plant pathology researcher at Enza Zaden: “We know there’s a lot at stake for our customers.
A dangerous fungus, one so deadly to plant life it can kill them in a mere matter of days, could actually hold the secret to giving plants a much needed boost to their health and protect them from future diseases, according to a new study. For centuries throughout human history, humankind has long battled with the ever-ongoing threat of crop loss, a threat that has singlehandedly made disastrous contributions towards economic loss and worsening world poverty.
Livestock farmers in Lyantonde district have appealed to the Ministry of Agriculture, Animal Industry and Fisheries to combat an outbreak of a strange disease in cattle. Dr Ronald Bameka, the district veterinary ofﬁcer, said the rare strain has killed more than 300 head of cattle. According to Bameka, the disease was ﬁrst reported in April when several farmers lost cattle.
Apple scab -venturia inaequalis- is a serious endemic disease of apples which attacks both leaves and the fruit. The fungal disease forms pale yellow or olive green spots on the upper surface of the leaves. Scabby spots on the fruit are sunken and tan coloured, and may have velvety spores in the centre.
Potatoes are an important crop throughout the world but a new and, so far, undescribed disease has been observed on potato plants during the growing season, and in tubers during the storage period, from Nileke County, Qitai County and other locations in Xinjiang, China. Scientists at Xinjiang Academy of Agricultural Sciences have isolated a particular fungus from the infected potato plants and tubers.
Scientists from the Indian Council of Agriculture Research (ICAR) claim to have found a cure for one of the most feared agricultural diseases. The fungal disease Fusarium Wilt -aka ‘Panama Disease’- afflicts banana plants. For the first time, Indian scientists have brought out a biopesticide that can control the disease. This biopesticide has been made using another fungus.
Barley yellow dwarf virus (BYDV) is an aphid transmitted disease which can severely reduce the yield of cereals and grasses, with severe cases losing up to 60% of yield. With the loss of neonicotinoid seed treatments for aphid control and increasing resistance to pyrethroids, growers should consider deploying an integrated pest management (IPM) strategy to tackle the virus.
Scientists are closer to gaining the upper hand on a disease that has wiped out citrus orchards across the globe. New models of the bacterium linked to the disease reveal control methods that were previously unavailable. “They show you all the biological processes, and how they work together,” said UC Riverside microbiology professor James Borneman.
Potatoes are a versatile vegetable, but growing them can be a challenge. The crop is susceptible to disease and weather changes - but one of the most significant challenges producers face is the fight against pink rot. The soil-borne pathogen can wreak havoc on entire paddocks of crops and render them unsuitable for cultivation.
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