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Shot hole disease is a major concern of the stone fruit industry. It is estimated that 80% of the California almond crop may be infested with shot hole disease, resulting in a potential yield loss of 50-75%. [3] In the 1930s, it was found that applications of Bordeaux mixture reduces shot hole disease on peaches from 80% to 9%.
Citrus tristeza virus (CTV) is a viral species of the genus Closterovirus that causes the most economically damaging disease to its namesake plant genus, Citrus.The disease has led to the death of millions of Citrus trees all over the world and has rendered millions of others useless for production. [1]
The disease affects trees of all ages and types, including seedlings and rootstocks. Young trees infected by citrus blight grow until the age of 5–6 before their growth is impacted. [1] All citrus scions are susceptible to infection by the blight, though different plants display different tolerances to the disease.
The impact of Hurricanes Irma in 2017, Ian in 2022 and Milton in 2024 on trees already weakened from years of citrus greening disease "has led Alico to conclude that growing citrus is no longer ...
This Ascomycete fungus affects citrus plants throughout subtropical climates, causing a reduction in both fruit quantity and quality. [citation needed] Symptoms include both fruit and leaf lesions, the latter being critical to inter-tree dispersal. Strict regulation and management is necessary to control this disease since there are currently ...
The most effective treatment found for closed calyx fruit was to submerge the fruit in the calcium chloride solution and to apply a vacuum and immediately rinse in water. [ 14 ] [ 15 ] This overcame the injury problem and gave much better control of the disorder.
Botryosphaeria obtusa enters the fruit through wounds. These can be made by insects, birds or growth cracks. At first a brown spot, near the calyx, appears on the fruit. [2] The spot on the fruit then enlarges and black/brown rings appear on the fruit. The fruit holds its shape, however, unlike other fruit diseases.
Plant diseases which affect fruit trees. Subcategories. This category has the following 9 subcategories, out of 9 total. A. Apple tree diseases (47 P)