List of tea diseases
List of Tea Diseases is a comprehensive compilation of the various diseases that can affect the tea plant (Camellia sinensis). Tea, being a globally significant crop, is susceptible to a variety of diseases that can impact its growth, yield, and quality. These diseases can be caused by a range of pathogens including fungi, bacteria, viruses, and nematodes, as well as non-infectious factors such as nutrient deficiencies and environmental stressors.
Fungal Diseases[edit | edit source]
Fungal diseases are among the most common and damaging diseases in tea plants. They include:
- Blister Blight: Caused by the fungus Exobasidium vexans, this disease is characterized by the appearance of blister-like lesions on the leaves.
- Black Rot: This disease, caused by the fungus Phytophthora cactorum, leads to the rotting of the roots and lower stem.
- Grey Blight: Pestalotiopsis theae is the fungus responsible for this disease, which results in greyish patches on the leaves.
Bacterial Diseases[edit | edit source]
Bacterial diseases in tea plants are less common but can still cause significant damage. They include:
- Bacterial Blight: Caused by the bacterium Pseudomonas syringae, this disease leads to the wilting and browning of leaves.
- Canker: This disease, caused by the bacterium Pseudomonas camelliae, results in the formation of cankers on the stem.
Viral Diseases[edit | edit source]
Viral diseases are relatively rare in tea plants but can be severe when they occur. They include:
- Tea Mosaic Virus: This virus causes a mosaic pattern to appear on the leaves.
- Tea Yellow Blotch Virus: This virus leads to the formation of yellow blotches on the leaves.
Nematode Diseases[edit | edit source]
Nematodes are microscopic worms that can cause damage to the roots of tea plants. They include:
- Root-Knot Nematode: Meloidogyne species cause the formation of galls or knots on the roots.
- Root-Lesion Nematode: Pratylenchus species cause lesions or wounds on the roots.
Non-Infectious Diseases[edit | edit source]
Non-infectious diseases are caused by factors other than pathogens. They include:
- Nutrient Deficiencies: Lack of essential nutrients like nitrogen, phosphorus, and potassium can lead to various symptoms including yellowing of leaves and stunted growth.
- Environmental Stressors: Factors like drought, frost, and high temperatures can cause stress-related symptoms in tea plants.
See Also[edit | edit source]
References[edit | edit source]
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