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In the United States, $2.5 to 3 million dollars are lost because of peach leaf curl. Sixty to ninety percent of peach shoots in Italy can be infected by T. deformans. [14] Although peach leaf curl is mostly manageable with fungicide spraying in dry climates, [4] improper timing or incomplete coverage of the crop can result in control failure. [11]
Peach scab affects stony fruits such as peaches, nectarines, and apricots. Like most fungal diseases, peach scab thrives in warm and moist conditions. As a fungus, adequate shade plays an important role in growth—particularly in areas lacking good sanitation. Poor pruning of branches/foliage can result in disease breakouts of peach scab.
If trees are not sprayed early enough, treatment is ineffective. Copper-based mixtures (such as Bordeaux mixture) and lime sulphur are two fungicides commonly used. [2] [10] Peach cultivars can be planted which show some resistance to peach leaf curl, or at least regenerate rapidly, such as the white-fleshed Peach 'Benedicte'. [11]
Peach tree leaves displaying various stages of the shot hole disease: brown spots on the leaf with conidium holders in the middle (center) that eventually fall off, leaving BB-sized holes behind (left) Shot hole disease of apricot leaves. The fungal pathogen Wilsonomyces carpophilus affects members of the Prunus genera. Almond, apricot ...
Disease management can consist of cultural management practices such as pruning, late season fertilizers or chemical management through measures such as insect control. Leucostoma canker of stone fruit can cause significant economic losses due to reduced fruit production or disease management practices. It is one of the most important diseases ...
Brooks fruit spot is usually controlled with fungicides applied during the early cover-spray period. One study showed that apple orchards that were not treated with fungicides had 87% of their fruit infected with brooks fruit spot while only 1–6% of trees that were treated with fungicides showed symptoms of the disease. [22]
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