Apples are susceptible to several diseases. Some of the most common apple tree diseases include brown rot, powdery mildew, scab and cedar-apple rust. With the decline of the organic apple industry, it is now more important than ever to use copper fungicides for apple scab prevention. The apple scab fungus causes from surface spots on leaves and twigs to black-coloured sunken spots with concentric rings on the fruit itself. Treat this fungal disease early to prevent severe damage later in the season. This fungal disease is soil borne, spread through spores and airborne. The copper fungicide for apple scab offered by us is thoroughly tested by our expert chemists and laboratory personnel who ensure that our products are free from harmful chemicals and don’t cause any side effects to the plants, especially when used on a regular basis. Copper is the most effective fungicide you can use, but it should be combined with others. It is best used in areas that haven’t had scab yet. When copper is applied when you first see scab, you are wasting copper because copper is good at preventing scab and slowing down its spread to neighboring trees. Make sure you protect your leaves as it can burn leaves. Copper moves through your tree and into the apples, protecting every single apple as it goes through your tree. Fungicides are chemicals or biological agents used to kill fungi and some bacteria. The terms fungicide, fungistat, and sanitizer can all be used to describe these products. Copper fungicides have been in use since the 1940s in apple production because they have a wide range of activity against several different fungal diseases of apples. Copper has three mechanisms of action that make it good for fighting the diseases that apples are prone to. These include mycelial growth inhibition, spore germination inhibition, and membrane disruption.

Copper Fungicide For Apple Scab

Introduction

Apple scab is a disease of Malus spp. (apples and crabapples) caused by Venturia inaequalis that is known to affect crops all over the world. It can be especially problematic for farmers in humid and wet regions, including New England, where the disease may begin to appear as soon as apple buds start to open. In order for apple scab to infect plants and cause damage, two conditions must occur simultaneously: free moisture on leaves or fruit must be present, plus the temperature range from 60-75°F has been reached. The best way to control this devastating disease is with preventive copper fungicide applications before any signs of infection are visible.

Copper fungicide is one of the first defenses against apple scab in our region each year, and it can save a crop from being lost to this disease.

Copper fungicide is one of the first defenses against apple scab in our region each year, and it can save a crop from being lost to this disease. If a copper fungicide is used properly, it will prevent the formation of spores on leaves, stop them from spreading to other parts of the tree, and prevent them from causing damage.

Copper fungicides are effective against many different types of fungi including Phomopsis ganjae (apple scab), Diplodia pinea (pine needle blight) and Alternaria alternata (early leaf spot).

What Is Apple Scab?

Apple scab is a fungal disease that affects apple and crabapple trees. The fungus overwinters on infected leaves and twigs, but it can also survive in the soil for up to several years. Spores are produced by mated spore-producing structures called perithecia which form on the surface of dead or dying tissue. Mature spores can be spread by wind or rain splash onto healthy plants. The fungus enters the new host through wounds such as pruning cuts or hail damage.

Apple scab causes brown spots on leaves, fruit stems, fruit calyxes (the leaflike structures that encase each single flower on an apple tree), and peduncles (the stalks supporting clusters of flowers). These brown spots may appear after periods of wet weather followed by dry conditions; they may also appear during periods of high humidity followed by lower humidity conditions.

How Does Copper Fungicide Work?

Copper fungicides are a broad-spectrum disease control product that can be used to control many diseases. Copper fungicides are most effective against powdery mildew and rust diseases caused by fungi in the order Erysiphales. They are often used as protectant fungicides because they have very good residual activity. However, copper fungicide does not provide 100% control of all fungi so it is not considered a cure-all for all plant diseases.

Copper fungicides come in two types: contact and systemic (translocated). Some copper compounds are more toxic to plants than others, but they still work well against many plant fungal pathogens if applied at the correct time of year when conditions are favorable for infection by these organisms.

When To Apply Copper Fungicide

• When the buds are just beginning to swell (this is when the application has the best impact)
• When infection has already taken place and you want to prevent further spread
• Other times of year when defoliation is occurring, or new growth is starting (in these cases, copper fungicide may help reduce damage from apple scab as well)

How To Use It

• Mix the fungicide according to the label. It is very important that you do this carefully, as improper mixing can lead to ineffective products and dangerous results.
• Apply in a thin layer over the entire leaf surface. Avoid getting it on lower stems or buds.
• Use caution when applying copper fungicides with copper sulfate, as they are toxic if ingested or absorbed through skin contact. To avoid accidental poisoning, wear gloves while applying any type of pesticide; wash your hands thoroughly after applying them; and keep children away from your work area until you have finished spraying and cleaned up your equipment.
• Wait 24 hours before harvesting apples from treated trees so that they have time to dry completely after treatment (drying helps prevent further infections).

Apple scab is an insidious disease that can ravage entire orchards unless properly prevented with a timely application of copper fungicide.

Apple scab is a fungal disease whose symptoms include browning or shriveling leaves, blemishes on fruit and dark sunken lesions on the bark. This disease can be very damaging to an orchard if not controlled by proper preventive measures. The Pacific Northwest is one of the most important apple-growing regions in the U.S., but it’s also home to some of the worst apple scab infections because of cold winters, cool summers and rainy springs that promote infection by Rhizoctonia solani fungi spores.

Conclusion

Remember that our climate makes us susceptible to apple scab every year, and it can take just one missed application of fungicide for the entire crop to be lost. By putting good practices in place now, you can keep your orchard healthy and productive for many years to come.