Here’s part 2 of our list of common plant diseases and their treatment by experts
Most plant diseases are caused due to the growth of parasitic organisms such as fungi, nematodes, and pests on the plants. In this article, we will explore three common plant diseases, their symptoms, and their treatment.
3) Black Knot
- Black Knot is a fungal disease caused by Apiosporina morbosa, Dibotryon morbosum or Plowrightia morbsum. This disease is common in fruiting and ornamental trees of plum and cherry. The fungus sets in during the winter season. It can be identified easily as telltale signs include the growth of hard, uneven, black galls that wrap around twigs and branches.
This disease develops slowly and usually takes one season before growing and manifesting itself. It spreads through the production of fungal spores. To nip this disease in the bud, it is important to identify and treat it before it grows rapidly. If the fungus is not kept in check, it attacks new growth by strangling the branches and sucking the life out of the tree. Plants infected with Balck Knot result in poor fruit production and low yield.
How To Treat Black Knot?
- Carry out inspection during winter seasons to check for signs of the disease. Cracks, discoloration, and swelling are the first signs of infection.
- If galls caused by the disease are detected, remove them using a pruning knife.
4) Downy Mildew
- Downy mildew is caused by Pseudoperonospora cubensis, which is is an oomycete or a type of algae. This disease infects cucurbits such as cucumber, melon, and pumpkin. Downy Mildew manifests as pale yellow patches on the upper side of older leaves. On the underside, patches of white to gray cotton-like fungi appear. This disease-causing algae thrives in wet weather and usually appears after rain or heavy dew.
Downy mildew is caused during early spring or late fall when the temperature is in the range of 60 – 65 degrees Fahrenheit. It develops on plant debris and the spores are carried by insects, garden tools, wind, or rain.
How to Treat Downy Mildew?
- Regular pruning will result in improved air circulation.
- Water plants in the morning so the plant will have ample time to dry during the day.
6) Early Blight
Early Blight is a common disease caused by the fungus Alternaria solani. This disease affects tomato and potato plants all across the USA. when the fungus attacks, the lower and older leaves are the first ones to manifest symptoms in the form of small brown spots that are decorated with concentric rings. The disease grows in an outward fashion and turns the leaves yellow. The infection spreads to the rest of the plant quite quickly and damages the crop.
The ideal conditions for the spread of disease include:
- High temperatures of 80 -85 degrees Fahrenheit
- Rain and humidity
- Rain, irrigation, seeds, and garden tools spread the disease from one plant to another.
Early blight does not necessarily occur during the early part of the growing season rather it can occur at any point during summers.
How To Treat?
- For the successful treatment of early blight, adopt a proactive approach. Apply copper-based fungicides on the tomato and potato plants, two weeks before the start of summer. A rough estimation of the ideal time for the application of fungicides is before the start of a long period of wet weather. This will keep Early Blight at bay.
If you fear that your trees and plants are suffering from plant diseases, then waste no time and contact American Tree Experts. We provide effective and proactive Disease Management for plants are trees. Call us at 973-744-6091 to get a free estimate of our services. We operate in Mont Clair, New Jersey, and nearby areas.
Anthracnose
As trees mature, they may develop a natural lean towards the right or left side. Trees usually tilt on the side where they gain more exposure to sunlight. Trees with a severe lean present a safety hazard. Due to the shift in their center of gravity, they become less stable and a branch or stem may snap and fall on nearby property.
These are natural fertilizers that are derived from organic sources i.e. plants and animals. Organic fertilizers have a different mode of operation. They add carbonic compounds to the soil. These compounds enhance the organic matter of the soil, promote a healthy soil ecosystem and improve the physical and chemical properties of soil. Organic fertilizers release nutrients slowly and are healthier than inorganic fertilizers.
The reason why inorganic fertilizers don’t contribute much to the health of the soil is because of the lack of carbon in their chemical composition. Carbon is needed for microbes and bacteria to derive energy and thrive. The chemical composition of organic fertilizers is similar to that of microbes. They contain all the important elements such as carbon, nitrogen, potassium, and nitrogen that are needed by microbes to exist in an environment.
These beetles attack several vegetables including potatoes, tomatoes, eggplant, petunias, and cherry tomatoes that are grown in North America. Colorado Beetles have distinct yellow-orange bodies that are decorated with ten black stripes on wing covers. These beetles defoliate plants and kill the young plants. They also reduce the harvest of plants. To deter these pests:
Generally, all tree cabling systems require bolts, cables, and brace wire stops. There are two main types of systems. The dynamic system allows the branches some freedom of movement while preventing them from splitting. These are also very discreet and often blend in with the branches.
A lot of trees are planted in residential areas. Sometimes trees are planted quite close to areas of common use such as garages, sheds, homes, driveways, and footpaths. Some homeowners even hang swings for kids on trees.
It is the third important plant nutrient. It is found in all nutrients. Potassium helps in the manufacture of plant sugar. Energy is derived from sugar to perform important functions such as protein synthesis, root development, and mitosis. Potassium also strengthens the immune system of plants.