Plant Disease Classification: Parasitic and Non-Parasitic Plant Diseases (Part 5)
Explore “Parasitic and Non-Parasitic Plant Diseases” in this Plant Disease Classification lesson. Part 5 of the five-part series brings together the source material and lesson topics. Use the contents links to find a section, read the notes, and consult the complete original teaching slides below.
Lesson topics
- Disease are classified as:
- Parasitic disease:
- Non parasitic disease
- Symptoms due to soil moisture imbalance:
- Wilting and die back:
Contents
- Read the original document
- Disease are classified as:
- Parasitic disease:
- Non parasitic disease
- Symptoms due to soil moisture imbalance:
- Wilting and die back:
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Read the original source document
Classification of Plant Diseases: original teaching slides for this study series.
Disease are classified as:
Disease are classified as: Parasitic disease Non-parasitic disease
Parasitic disease:
Parasitic disease: Disease due to casual agencies( fungi, viruses Bacteria etc.) Some members which effect trees are: Viscum album ( semiparasites) Cuscutta spp (leguminous plants) Striga spp (root parasites) Cephaleorus spp (on angiosperm) Toxicogenic insects(insect damage plant by sucking,chewing and show the same symptoms as fungi)
Non parasitic disease
Non parasitic disease Disease due to non parasitic casual agencies. Agencies are as follows: Soil moisture disbalance Nutritional disorder High or low temperature effect Effect of light
Symptoms due to soil moisture imbalance:
Symptoms due to soil moisture imbalance: Wilting: drooping of leaf or stem tips. Blast: sudden death of young bud inflorescence or young fruit. Scorch: sudden death of leaves and fruits Firming: drying and dying of leaves specially in grass maize and tobacco. Die back: dying backward from the twigs or tips of branches.
Wilting and die back:
Wilting and die back:
Review questions and answers
What are the key points about Parasitic disease:?
Parasitic disease: Disease due to casual agencies( fungi, viruses Bacteria etc.) Some members which effect trees are: Viscum album ( semiparasites) Cuscutta spp (leguminous plants) Striga spp (root parasites) Cephaleorus spp (on angiosperm) Toxicogenic insects(insect damage plant by sucking,chewing and show the same symptoms as fungi)
What are the key points about Non parasitic disease?
Non parasitic disease Disease due to non parasitic casual agencies. Agencies are as follows: Soil moisture disbalance Nutritional disorder High or low temperature effect Effect of light
What are the key points about Symptoms due to soil moisture imbalance:?
Symptoms due to soil moisture imbalance: Wilting: drooping of leaf or stem tips. Blast: sudden death of young bud inflorescence or young fruit. Scorch: sudden death of leaves and fruits Firming: drying and dying of leaves specially in grass maize and tobacco. Die back: dying backward from the twigs or tips of branches.
More lessons from this document
- Classification of Plant Diseases — Part 1
- Classification of Plant Diseases — Part 2
- Classification of Plant Diseases — Part 3
- Classification of Plant Diseases — Part 4
- Classification of Plant Diseases — Part 5
Conclusion
The important points in Disease are classified as: should be reviewed alongside the definitions, examples and comparisons given above. Continue with the other four articles to cover the rest of the source material.