Plant Blight, Causes and Treatment!

Indoor and outdoor plants are highly susceptible to a deadly disease commonly known as blight. No matter which specie you are growing, chances are that most of them will be attacked by it. Well, there is no scientific formula through which growers can completely get rid of this disease but there are certain ways that can help preventing it at the first place.

What is Plant Blight?

Blight is generally a plant infection caused by a pathogenic organism. In other words, it is a broad range of plant diseases that causes browning, yellowing, withering followed by the death of plant tissues. Plants attacked by this disease also show discoloring of stems, fruits and leaves.

Plant Blight Symptoms & Treatments
The plant blight may first appear as a discolored patch that quickly spreads among the rest of the plant. This is the reason to treat disease-infected plants as soon as possible otherwise it can lead to the death of the whole plant crop.

What are the causes of Plant Blight?

Plant blight is caused by a bacteria or fungus that makes their entry onto the surface of the plant leaf, stem or fruits. Although, the symptoms of both the types of infections – bacterial and fungal are same; it is not difficult to find their exact cause. These pathogens mostly attack the plant species which are receptive to one or more blights, such as apples, potatoes and tomatoes.

Example Of Plant Blight:

Tomato Blight – caused by fungus Genus Alternaria
Leaf blight of rice – caused by bacteria Xanthomonas oryzae
Late Potato blight – caused by Phytophthora infestans
Leaf blight of Southern Corn – caused by fungus Cochliobolus heterostrophus (Drechs)
Chestnut Blight – caused by fungus Cryphonectria parasitica (Murrill) Barr

What are the symptoms of Plant Blight?

Symptoms of almost every type of plant blight includes sudden browning, yellowing, spotting, withering or death of fruit, flowers, branches or the entire plant. Also, the irregular dead areas on various parts of a plant that cause it to die prematurely can be ‘blight’.

How Plant Blight can be prevented?

Though plant blight is not possible to completely overcome, there are various preventive measures that are worth taking:

  • Always use disease free seeds or starters before planting. If you are growing from cuttings, make sure to take your cuttings from a healthy mother plant.
  • Use organic fertilizers or soil mixes for your plants. It is recommended that you treat your crops with Olivia’s growing solution for their fast and sage propagation.
  • Closely monitor the plants from time to time; if you find anything suspicious, make sure to cure it.
  • Provide adequate space and light to your plants in order to make them thrive without any ado.
  • Avoid under watering and over watering the crops.
  • Maintain an optimal level of pH of your growing medium. Use a good pH balancer like Olivia’s pH Adjusters ‘Up’ or Olivia’s pH Adjusters ‘Down’ to adjust the pH levels.
  • If you find pests in your garden, quickly eliminate them from that place. This is because those pests can encourage the growth of pathogens that cause blight.  To save your garden from those pests, check our link Garden Pest Control and Treatment!

How to Treat Plant Blight?

For treating the plants infected by blight, you can follow certain remedies and they are:

  • Remove all the affected parts of the plant that are suffering from blight. For that, use a clear shear or pruner to trim the infected leaves, branches, stems, fruits or flowers.
  • Always disinfect your shears or pruners after every cut you make.
  • Never compost the infected parts of the plant.
  • Keep the growing medium such as soil free from debris. Moreover, remove all the garden debris once you have finished with harvesting.
  • Treat your plants with effective antibiotics or fungicides. If the blight is a result of a bacterial infection, use antibiotics otherwise you need a fungicide.
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