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Shot hole disease on apricots

Shot Hole Disease in Apricots - SDSU Extensio

Treating Problems In Apricots: Learn About Diseases Of

Can you eat apricots with shot hole disease

Other diseases that commonly affect apricot cultivars in California include shot hole disease (Wilsonomyces carpophilus), jacket rot (Botrytis cinerea, Sclerotinia sclerotorum,), bacterial canker (Pseudomonas syringae), and Eutypa dieback disease (Eutypa lata) (UC IPM 2012) To manage this disease, the best solution is to remove and dispose of the infected tree. Shot Hole (fungus - Wilsonomyces carpophilus): Was formerly called Coryneum blight. Blight lesions on leaves are small, circular, purple spots. Peach and nectarines, more so than apricots, require well drained soil for good growth. Prolonged. apricots, or if the spring sees extended wet weather conditions. Shot Hole Disease: Treatment and Prevention 403 GREEN VILLAGE ROAD GREEN VILLAGE NJ 07935 973-377-8703 Shot hole disease, or coryneum blight, is caused by the fungus Wilsonomyces carpophilus. It is most commonly found on Prunus spp. host Shot hole disease attacks almonds, apricots, nectarines, peaches, plums and prunes. Ornamental flowering peach and plum trees are often affected as severely as the fruit trees. Most people recognize shot hole in spring, when it causes spots or lesions on buds, leaves, twigs an

Coryneum blight — also called shot hole disease, California blight, peach blight or pustular spot — is caused by the fungus Coryneum carpophilum. In Colorado it affects mainly peaches and apricots, and to a lesser degree sweet cherries. Severe foliar shot holing may weaken a tree, while the most apparent damage is infection of the fruit Can you eat apricots with shot hole disease? The fruit is safe to eat but has an unattractive appearance. Apricots are treated in the spring as the flower fall to the ground. Apricots should receive the same fall treatment as peaches, if the disease has been severe. This is not only true of fruit trees affected by coryneum blight, but it's also. Other names for the disease are bacteriosis, bacterial leaf spot, or bacterial shot hole. Common hosts include peach, nectarine, prune, plum, and apricot. Other hosts are sweet and tart cherry, almond and wild peach. Cultivars within Prunus species vary widely in their susceptibility to this disease. The disease affects fruit, leaves, and twigs Coryneum blight - also called shot hole dis ease, California blight, peach blight or pustular spot - is caused by the fungus Coryneum carpo philum. In Colorado it affects mainly peaches and apricots, and to a lesser degree sweet cherries. Severe foliar shot holing may weaken a tree, while the most apparent damage is infection of the fruit

UC IPM: UC Management Guidelines for Shot Hole Disease on

Nov 7, 2018 - Shot hole disease can attack several types of fruit trees, but apricot is especially vulnerable. Preventative steps are the best measures for managing this disease. Find tips on its control in the following article. Click here for more information On apricot fruit, scab lesions are pale green and remain flush with the fruit surface. This is different to shot-hole disease, which causes raised scabs on the fruit surface of apricots. On peaches, lesions are flat, circular black spots up to 3mm in diameter. On nectarines, the skin loses its pigment and becomes pale green to cream in colour In this regard, can you eat apricots with shot hole disease? The fruit is safe to eat but has an unattractive appearance.Apricots are treated in the spring as the flower fall to the ground.Apricots should receive the same fall treatment as peaches, if the disease has been severe. This is not only true of fruit trees affected by coryneum blight, but it's also true of aspens Pest & Disease Control for Apricot Trees. As it grows, an apricot tree may experience issues such as the presence of pests or diseases. Factors such as location, weather, and upkeep play a part in which issues your apricot tree encounters and how well it stands up against them 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%. In the 1930s, it was found that applications of Bordeaux mixture reduces shot hole disease on peaches from 80% to 9%

Apricot fungus (shothole?) infection control - spreading. I have a recently planted home orchard using high density planting (plants are close together and on dwarf rootstock and will be pruned and kept small)-- 6 trees-- 2 apricots (moorpark and early golden), 2 peach, 2 apple. All were planted in Feb-March (dormant--bareroot plants) Coryneum blight is caused by the fungus Wilsonomyces carpophilus . It is most common on apricot, peach, and nectarine. The fungus overwinters in infected buds and in small twig cankers. Infections can occur (via fungal spores) from spring to fall. Rainy weather spreads spores from infected tissue to leaves and fruit by splashed and wind-blown rain Hi, I live in Quebec near Montreal. I have a 9 year old apricot tree that is infected with shot hole disease (Coryneum blight). It has been infected for the past few years. Last year, it was pruned for the first time. I cut about 80-90% of the tree. I used copper and chlorothalonil based fungicide,. Disease Identification Control; Coryneum Blight (Shot Hole) Round, purple-tinted lesions on leaves turn black and centers fall out leaving many small holes in leaves. Similar lesions on fruit eventually turn black. Black cankers form on branches which will eventually die. Prune out heavily infected branches. Clean up debris including leaves in.

The fungal disease coryneum blight, or 'shot-hole' disease, appears as small brown specks on apricots soon before harvest. The fungus can also cause cankers on twigs and buds, and a gummy substance may be present on the tree. While the apricots can still be eaten, they aren't as aesthetically pleasing Right at the time of bud break, spray with a fixed copper fungicide to kill off brown rot and shot hole fungi. You may need to use an active apricot fruit tree spray during the growing season if you see any pests or fungus. How do I get rid of aphids on apricot trees? Wash aphids from plants with a strong stream of water or by hand-wiping Shot Hole Disease Description: Shot hole is a leaf disease that produces brown spots on plant foliage that eventually dry out, fall, and leave multiple holes in the leaf. Hosts: Prunus spp. such as plum, cherries, and laurels. Biology and Symptoms: Wet and humid weather, particularly in spring, contributes to the spread of shot hole disease A: Shothole is a common bacterial disease on 'Otto Luyken', 'Zabal' and 'Schip' laurel plants. The diseases's name is descriptive of the symptoms: it looks like someone shot the shrub with a shotgun! Wet leaves seem to make the disease worse, so make sure not to water your plants from overhead Shot hole disease may kill . buds during winter and cause spots on fruit and leaves in spring. If severe, leaf drop may occur in spring. Fruit lesions are light brown with dark purple margins and usually are clustered on the upper sides of fruit. Fruit spotting can be severe, and as fruits mature, spots become scablike an

Horticultural Pest and Disease Boards SUGGESTED SPRAY SCHEDULE FOR HOME GARDEN PEACHES/NECTARINES/APRICOTS Growth Stage Description Target Information Chemical Sprays Important Dormant / Delayed Dormant Before buds swell in spring 40 For shot hole, bacterial blight, peach leaf curl and powdery mildew. When daytime temperatures reach -45 F Always check with your nursery professional to properly diagnose problems before undertaking additional sprays. NEVER use sulfur sprays on apricots. SHOT HOLE: Note: If symptoms of this disease appeared last year, spray as indicated below in addition to the winter dormant spray. Shot Hole appears as numerous to many small holes in the leaves. Shot hole disease attacks almonds, apricots, nectarines, peaches, plums and prunes. Ornamental flowering peach and plum trees are often affected as severely as the fruit trees. Most people recognize shot hole in spring, when it causes spots or lesions on buds, leaves, twigs and fruit Pest: Shot hole, Coryneum blight (Wilsonomyces carpophilus) Pest Type: Infectious disease, fungus Major Identifying Features: Shot hole can be seen first in spring as purplish or reddish spots on new buds, leaves, shoots, spots expand and their centers turn brown and can drop out, leaving holes Life Cycle: The fungus overwinters in infected buds and twig lesions, spores sprea

But one specific type of hole, called 'shot hole', is caused by plant diseases. Description. Shot hole is so called because it looks like the leaves have been blasted with shotgun pellets. Symptoms. Small and more-or-less rounded holes are a result of plant disease infections, especially fungal leaf spots and bacterial canker Varieties within Prunus species vary widely in their susceptibility to this disease. Other names for the disease are bacteriosis, shot hole, and black spot. The causal bacteria, Xanthomonas campestris pv. pruni, can attack fruit, leaves, and twigs.Fruit loss on some varieties can be very high Coryneum blight, a.k.a. 'shot hole disease', is a major problem of apricots, nectarines, etc. in coastal British Columbia due to the winter rains. People plant their trees under the eaves of their houses to try to keep them as dry as possible, and I've even seen smaller trees planted under a pergola with a glass roof to keep the rain off

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Coryneum blight ( Wilsonmyces carpophilus ), also known as shothole blight, is a fungal disease that can cause damage on peach, nectarine, apricot, almonds (ornamental as well as nut bearing), and to a lesser degree, cherries (tart and sweet). Coryneum blight is caused by the fungal pathogen Wilsonmyces carpophilus Scab and shot hole of Apricots. (Contribution to scab diseases of stone fruits I.). Foreign Title : Strupovitost a dírkovitost Meronèk. (Príspevek k strupovitosti peckového ovoce I.). Author(s) : Novák, J. B Shot Hole Disease/Corynium Blight Symptoms. Small reddish-purple spots on leaves, which fall out leaving holes. Fruits may also be spot ted. On peaches, twigs may also be spotted and develop cankers. Control Methods. Bordeaux mix or copper fungicides in early fall, winter, and spring. Comment Common Names of Plant Diseases...J. M. Ogawa, J. K. Uyemoto, and B. A. Jaffee, primary collators (last update 4/8/03) BACTERIAL DISEASES Bacterial canker and blast Pseudomonas syringae pv. syringae van Hall Bacterial spot Xanthomonas airboricola pv. Pruni (Smith) vauterin et. al. = X. campestris pv. pruni (Smith) Dye..

The lesions can merge to form large brown blotches on apricots, or black ones on peaches, nectarines, and plums. Unfortunately, this disease is often not noticed until the crop is almost fully developed. Fruit with severe infections may crack open or be stunted and misshapen This article is a list of diseases of apricots (Prunus armeniaca). Bacterial diseases. Bacterial diseases; Bacterial canker and blast Pseudomonas syringae pv. syringae: Bacterial spot Shot hole Wilsonomyces carpophilus = Stigmina carpophila. Silver leaf Chondrostereum purpureum: Verticillium wil Monitor and control for common pests & diseases, such as brown rot, peach twig borer, shot hole fungus, and San Jose scale; Some Recommended Varieties for Santa Clara County * Autumn Royal, Blenheim, Moorpark, Tilton * Many other varieties may also do well here in Santa Clara County. This list is based on UC Master Gardener trials, taste tests.

Q. Apricot - My apricot tree has a green growth on its leaves. What is the growth and what do I need to Q. Apricot Tree - My apricot tree flowered really well and I could see the first signs of fruits forming. The blossom has now Q. Apricot Tree Dieback - I have a 2 year old apricot tree in my garden and the branches are starting to die. Horticultural Pest and Disease Boards SUGGESTED ORGANIC SPRAY SCHEDULE FOR HOME GARDEN PEACHES/NECTARINES/APRICOTS Growth Stage Description Target Information Chemical Sprays Important Dormant / Delayed Dormant Before buds swell in spring For Coryneum blight (shot hole), bacterial canker, peach leaf curl, peach twig borer Lime sulfur, Copper. Jun 30, 2019 - Shot hole disease is a serious issue in many fruit trees. Some flowering ornamental trees can be affected as well. Learn more about this disease and how to treat it in the following article Problems: Cherry laurel is more disease- and insect-resistant than other Prunus species, but root rot can be a problem if the shrub is planted in a wet location. A fungal or bacterial disease called shot hole, produces purple to reddish leaf spots. The spots drop out, leaving circular holes in the leaf

Shot Hole - Bonide

Apricot Diseases and Pests, Description, Uses, Propagatio

Bacterial canker of stone fruits is caused by Pseudomonas syringae pv. syringae, a widespread organism that generally causes disease on trees that are stressed. All stone fruit can be affected by this disease but cherries, peaches, and apricots are the most susceptible. In peach orchards, trees 2- to 8-years-old that are under stress are at the. The spots grow larger and eventually girdle young twigs so the wood beyond where the infection occurs, dies. The disease is not fatal to the tree but greatly reduces the number of fruit and leaf buds by killing many of the small twigs. The symptoms on the leaves are much more distinct and account for the common name, shot-hole disease Apricots perform best in climates with dry spring weather. They are susceptible to late spring frosts. Bacterial canker is a common disease of young trees in California. Plant trees at about a 10 to 20 ft. spacing. Apricots are mostly self-fruitful and ripen in late June to July (100-120 days from full bloom)

Apricot treatments, most common diseases and pests of this

Shot hole is a fungus. Plant Parts: Leaves, buds and fruit. Season: At the end of Spring - Summer. Symptoms: Leaf symptoms first appear as reddish spots that enlarge until the centre of the spot becomes a tan colour and the centre of the spot will eventually fall out producing a hole. Infected buds will turn black and fruit will have similar. APRICOTS . Diseases: Bacterial canker Brown rot blossom blight Coryneum Blight (shot hole) Fruit spot Jacket rot Leaf curl Leaf spot Phytophthora root & collar rot Powdery Mildew (shot hole) Deadbud Fruit rot (Brown rot) spots Powde ry Mildew Phytophthora root & collar rot Active Ingredient . NATURE'S CARE GARDEN DISEASE CONTROL 67702-1. Disease models > Plum, prunes, apricot and mirabelle Disease Models > Wilsonomyces carpophilus (Shot Hole ) Shot hole is caused by the fungal pathogen Wilsonmyces carpophilus. Most severe on apricots, but occurrs on all stone fruit July 31, 2016 Damaris. Purple against a blue sky. These are some of the Dragon's Blood plums, seen from underneath the branches. There aren't as many as usual for an 'on' year, maybe because of shot hole disease and aphids due to the wet spring. But they're big, and just as delicious and beautiful as ever with their startlingly bright.

Shot hole disease (Coryneum blight)-Wilsonomyces carpophilus Shot hole, or Coryneum blight, is a serious disease of almonds, apricots, nectarines, peaches, and other Prunus species in California. Reddish or purplish brown spots about 0.10 inch in diameter occur on new leaves and shoots.. Shot Hole Disease Treatment Infections can occur anytime between fall and spring, but is usually most. The concern here is a fungal disease called coryneum blight -- also known as shot-hole blight. It can infect the leaves, fruit, buds, blossoms and twigs. It causes considerable damage and is much. Shot Hole The exact cause of shot-hole disease (Wilsonomyces carpophilus) is thought to be a combination of a bacterium and a fungus that attacks peaches, plums, cherries, apricots, and nectarines, which are all closely related. The shot-hole appearance of the leaves is where the disease-infected tissue dries up and falls out of the center of. Pests and diseases: Brown rot, shot hole and Eutypa dieback, occasional codling moth attack. Do not spray apricot trees with lime sulphur. Propagation: Varieties may be grafted on peach, apricot or myrobalan plum rootstocks. Seedling apricots are slow to produce fruit and quality is unpredictable to give a shot-hole symptom (Figure 1). This is easily confused with fungal shot hole caused by the pathogen Wilsonomyces carpophilus but the bacterial spot disease can usually be recognised by the oily sheen and angularity of young lesions. The spots often join, and where infection is heavy, affected areas become pale yellow-gree

WHAT IS SHOT HOLE DISEASE? |The Garden of Eaden

Crops: Apples, apricots, cherries, grapes, nectarines, peaches, plums and prunes Diseases controlled: Anthracnose, black rot, brown rot, powdery mildew, rust, scab and shot hole Eagle 20EW Spectracide Immunox Multi-purpose Fungicide Spray Concentrate -Do not apply Eagle 20EW within 14 days of harvest on apples and grapes. neem oi SHOT HOLE DISEASE TABLE OF CONTENT • Symptoms • Literature Shot hole is caused by the fungal pathogen Wilsonmyces carpophilu (Coryneum blight).. Most severe on apricots, but occurrs on all stone fruit. The fungus infects the leaves, twigs and fruits

  1. Shot hole disease (Coryneum blight)— Wilsonomyces carpophilus. Shot hole, or Coryneum blight, is a serious fungal disease of almonds, apricots, nectarines, peaches, and other Prunus species in California. Reddish or purplish brown spots about 0.10 inch in diameter occur on new leaves and shoots
  2. Extension Articles. Telephone number: 605-688-5545. Email. Our People. Blossom End Rot Tomatoes and Other Vegetables. Fire Blight. South Dakota Pest Management Guides. Emerald Ash Borer Insecticide Treatment Options
  3. Crops: Apricots, blueberries, cherries, nectarines, peaches, plums and prunes Diseases Controlled: Anthracnose, brown rot (blossom and twig blights), cherry leaf spot, leaf curl, mummy berry, scab and shot hole Bonide Fung-onil Multi-purpose Fungicide1 Ferti-lome Broad Spectrum Landscape and Garden Fungicide1 GardenTech Daconil Fungicide
  4. 'Shot hole' is the description of the leaf symptoms caused by two distinct diseases: 1) a fungus affecting apricot and sometimes peach or almond; 2) a bacteria attacking cherry and plum. This card only describes the fungus: in Afghanistan, it is very common on apricot. The spots appear on the upper side of the fruit making it unsalable
  5. a carpophila) is a serious disease affecting the Prunus species in many regions of the world, particularly peaches and apricots (Adaskaveg et al. 1990; Ogawa et al. 1995; Ahmadpour et al. 2009).In Mexico, stone fruit trees (apricot, peach, plum, almond and sweet.
  6. Apricot (Prunus armeniaca L.) is a continental deciduous plant with cold winters that can withstand temperatures as low as -30°C. The apricot has been used as a treatment for various diseases in Folk medicines. Shot hole which is a fungal disease caused by Wilsonomyces carpophilus is one of the diseases that target apricot. The purpose of the current study was to record the prevalence of shot..
  7. On apricots the spots become brown, raised and rough, giving the fruit a scabby surface. On peaches and nectarines the scabs develop into deep indentations. Infected fruit have spots of gum and in severe cases cracks in the skin. The FieldClimate.Com Infection model for shot hole disease shows the infection progress lines for weak, moderate.

Facts on Fungus of an Apricot Tree Home Guides SF Gat

  1. During the spring of 2010, severe symptoms of shot-hole disease were observed on 75 to 80% of apricot trees (Prunus armeniaca) located in an orchard in the State of Mexico
  2. a] sp.) disease of apricot for three consecutive years (1993-96) at Tarnab
  3. The primary use for fixed copper sprays on apricot trees is in the control of shot hole disease, caused by Wilsonmyces carpophilus, a fungal pathogen. Also known as coryneum blight, the first signs of this disorder would be purplish brown splotches on fresh leaf. As the spots enlarge, the centres turn darker and brown specks may form in the middle

A: Plums, apricots and peaches all get a bacterial disease called bacterial leaf spot. It is also commonly called shot hole disease, because it looks like someone stood back and shot the tree with. Bacterial spot is an important disease of peaches, nectarines, apricots, and plums caused by Xanthomonas campestris pv. pruni. Symptoms of this disease include fruit spots, leaf spots, and twig cankers. Fruit symptoms include pitting, cracking, gumming, and watersoaked tissue, which can make the fruit more susceptible to brown rot, rhizopus. APRICOTS Brown Rot Blossom Blight Apply when buds show red color until brown bud jackets have fallen. Shot Hole Apply in late fall or early winter before winter rains or snow. Repeat in late winter or early spring before buds break. Do not apply after full bloom. * Delayed Dormant - The period just before blossom buds break open. (continued Coryneum blight also called Shot hole diease affects peaches, apricots and sweet cherries and other fruit trees. Some flowering ornamental trees can be affected as well. Since little can be done to control shot hole fungus once the trees have been infected, prevention is essential in treating shot hole disease Disease takes place in spring

What Are the Causes of the Little Brown Spots on Apricots

  1. Shot hole, or Coryneum blight, is a serious disease of almonds, apricots, nectarines, peaches, and other Prunus species in California. Reddish or purplish brown spots about 0.10 inch in diameter occur on new leaves and shoots. The spots expand and their centers turn brown. Tiny, dark specks sometimes form in the center of lesions, especially on.
  2. control of shot-hole disease on apricot. A number of bacterial strains identified in previous studies were re-ported as potential biocontrol agents against many fun
  3. Plant the seed in well-drained and loamy soil. Apricots usually thrive in soil with a pH between 6.5 and 8.0. Well-drained loamy soil is vital to your apricot growing a robust root age, which can help produce fruit in larger quantities. You need to dig a six-inch hole for your sprouting apricot seed
  4. ated leaves around and beneath the tree

This disease can affect all parts of all stone fruits although some are more susceptible turn brown and drop out giving a 'shot hole' effect. Other symptoms can occur, such as thin, narrow, often rolled, yellow leaves particularly on Cherries and apricots are more susceptible than peaches, nectarines and plums Apricots (Prunus armeniaca) are Chinese natives and are hardy growing in USDA hardiness zones 5 through 8.The tree's leaves can tell you a lot about how healthy your tree is and in many cases, if its cultural requirements are being met. However, apricots are prone to several diseases and pests that affect the foliage Shot hole treatment and control. Where the damage is very unsightly, trim off affected leaves which will encourage new growth, but avoid heavy pruning which stresses the plants and might make the problem worse. Spray with a fungicide, repeating as recommended to treat fungal leaf spot disease on laurels and other ornamental members of the.

exposed to diseases. The production of apricots, cherry, almonds, plum and peach has dropped largely as a result of diseases such as gummosis, cankers, crown galls, Grey mold and Shot hole disease [2]. Among these diseases gummosis is one of the devastating diseases on these Gummosis is associated with the diseases, pests and als Shot hole disease, which may also be known as Coryneum blight, is a serious issue in many fruit trees. It is most commonly seen in peach, nectarine, apricot, and plum trees but may also affect almond and prune trees. Since little can be done to control shot hole fungus once the trees have been infected, prevention is essential in treating shot. The pathogen overwinters as mycelium or conidia (in temperate climates) on the bark surface or bud scales. On peach, heavy infections occur in autumn, while on apricots and sometimes on cherry, they may develop in spring. Basic strategy. Sprays carried out against T. deformans are also effective in controlling shot-hole disease. Sprays in. Shot hole disease produced by the fungus Stigmina carpophila. The disease is common in the unkept orchards and produces important losses to the stone fruit trees. On the leaves appears circular spots in whose right the tissue brunifies, and finally it breaks away from the rest of the leaf. The apricots stop from growing, rot and fall.

Shot-hole disease on Cherry Leaves | Growing & Mowing in

Managing Pests in Gardens: Fruit: Diseases: Shot hole

Shot-hole and Freckle: Stonefruit, particularly Japanese plum and apricot. Different symptoms but usually treated the same. Characteristics of shot-hole are brown leaf spots that fall out, and fruit develops scabs and gumming. Characteristics of Freckle are olive green spots on fruit and oval brown spots on twigs. Prune trees back hard Bacterial shot-hole of cherry laurel is caused by the bacterial pathogen Pseudomonas syringae pv syringae. The disease can lead to product downgrading and losses in the case of cherry laurel and other susceptible ornamental plant species. This factsheet describes the symptoms and biology of the disease and summarises the available control measures Shot hole is caused by the fungal pathogen Wilsonmyces carpophilus (formerly known as Stigmina carpophila ). Most commonly affected are apricot, peach and nectarines, but the disease occurrs on all stone fruit. The fungus is able to infect all stages of the plant; the leaves, the twigs , the blossom and fruits leaf shot-hole - young leaves become infected and a shot-hole symptom develops. quiescent infection - on green fruit, M. fructicola sometimes forms visible lesions that remain dormant until the fruit approaches maturity. Quiescent infections might be invisible or appear as small necrotic or brown-red lesions or haloes on the fruit surface

Video: Apricot Tree Diseases: How to Identify, Treat, and Prevent

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This scared me, but also made me research for more information about apricots' diseases, so I can heal it. I just can't lose my apricot! I like apricots, more than any other fruits, that's why one of the fruit trees I have in my garden is an apricot. I was amazed of how much it grew, compared to the cherries, but I've learned that that was normal Shot-hole fungus on almond, apricot, nectarine, and peach. Diseases Controlled Using Liquid Lime-Sulfur Spray: Anthracnose twig and leaf fungus on grapes, blueberries, gooseberries, blackberries, and raspberries. Almost as important as using a dormant spray is cleaning up fallen leaves under trees and in the garden Shot Hole Disease on Cherry Leaves Growing fruit in the Pacific Northwest can be a very fun and rewarding experience. Unfortunately, the climate of the Willamette Valley can be a challenging factor for home and commercial orchard production because regular precipitation and dew in spring and summer allows fungal and bacterial diseases to thrive Shot hole disease is more commonly known as corundum blight. It's a fungus that usually pops up after several days of rain. My apricot had it this spring. The best treatment is defoliation (leaving leaf stems attached) and spraying the tree and the soil surface with Fungonil 1444 - Coryneum Blight. Coryneum blight, also called shot hole disease, California blight, peach blight or pustular spot, is caused by a fungus that attacks mainly peaches and apricots, and less often, sweet cherries. Early symptoms appear as small, red spots that enlarge and become purple with a white center