by KLBM (Westfield NC USA) I have a small orchard of 17 fruit trees. Repeat the treatment at weekly or biweekly intervals. Thus, if you want to save your peaches, keep reading for the treatment of peach leaf curl. Another easy way to fight peach leaf curl is to plant peach varieties that are resistant to the disease. Anther year of success with no peach leaf curl using Tea Tree Oil. Peach leaf curl is a fungal infection caused by the fungus Taphrina deformans. Jack Snakes, May 26, 2017, in forum: Edible Gardening. When severe, leaf curl can substantially reduce fruit production. Peach leaf curl, also known as leaf curl, is a disease caused by the fungus Taphrina deformans.Peach leaf curl affects the blossoms, fruit, leaves, and shoots of peaches, ornamental flowering peaches, and nectarines, and is one of the most common disease problems for â¦ Leaf curl on peach tree. Neem oil is considered safe to any insect that does not chew leaves, making it harmless to most ... deficiencies, lack of water and wind gusts. Neem oil is better at killing insects and has no dormant season fungicidal quality. Repeat until the plant begins to recover. Silvery lines or trail on the new leaves means your tree has citrus leafminer. Frost peach is a good one for this area. Plant Physiology and Biochemistry 112:9-18. I take tons of pictures but I forgot to take a pic of the leaf curl so I had to borrow one â oops! Peach leaf curl loves wet spring weather, so the best and most effective way of preventing it is to shelter your tree from the rain. 7). The challenge of Neem as it reads on the label is the do's and don'ts regarding to temperatures. Infections lead to severe distortion of the leaves soon after leaf burst in spring. Captan and Manconzeb Fungicides are normally used for fungus control. This works against pathogens like peach curl fungi and Xanthomonas spot bacteria overwintering in bark and bud crevices. I don't know about Tea Tree Oil, but oil sprays are all better for controlling insects. The Neem Oil will either out right kill the worm or interrupt the worms life cycle, which will also kill the worm. Liquicop is extremely weatherproof and does not require oil or a sticker. While treatment of peach leaf curl is not always effective once symptoms occur, the disease is fairly easy to prevent. You need to spray at 14 day intervals (twice) to be effective. Sulfur spray can be used to kill the pathogens when the fungus is in the dormant stage. ... Having heard of the miraculous properties of neem oil, I bought a gallon of pure, cold pressed neem about 10 years ago, and used it as a cover spray (with a surfactant) in the entire orchard for a complete growing season. Sulfur Spray for Peach Leaf Curl. Leaf curl aphids can be controlled by their natural enemies â ladybirds (lady beetles), green lacewings, brown lacewings, hoverflies, and soldier beetles. Leaf curl can be controlled by applying sulfur or copper-based fungicides that are labeled for use on peaches and nectarines. If you have curly leaf problems on your peach trees, here is a solution that is environment-friendly, budget-conscious and harmless to human health. Does neem oil kill peach leaf curl? The treatment of leaf curl depends on the cause of the leaf curl. Spray the entire tree after 90% of the leaves have dropped in the fall and again in the early spring, just before the buds open. GrowOrganic Peaceful Valley 110,416 views. Phytopathology 97:1625-1633. In really bad cases, it's hard to make out the shape of the leaf at all, it's that deformed. The oil will disrupt the mothsâ breeding cycle and discourage them from leaving eggs. Spraying a copper fungicide or neem oil at that time will help prevent infection. Copper and fungicides limit infection and prevent the spread of bacterial and fungal diseases such as peach leaf curl, fire blight, powdery mildew, shot hole, and brown rot. As we all know, preventing is always the first step. In addition to working as a natural leaf polish, neem oil is a biodegradeable, fast acting insect bio-inhibitor. Peach leaf curl disease, scientifically known as Taphrina deformans, tends to attacks peach trees in humid climates.