What are the six principles of plant disease management?

The six fundamental principles of disease management are exclusion, eradication, protection, resistance, therapy, and avoidance of insect vectors and weed hosts.

Which factors are required for developing plant disease?

Important environmental factors that may affect development of plant diseases and determine whether they become epiphytotic include temperature, relative humidity, soil moisture, soil pH, soil type, and soil fertility.

What are the five components in plant disease?

The chain of events involved in disease development includes inoculation, penetration, infection, incubation, reproduction, and survival (Figure 70).

• Inoculation: This describes the introduction of the plant pathogen to the host.
• Penetration:
• Infection:

What are the considerations in performing plant disease diagnosis?

Know What is Normal

• Proper plant identification.
• Recognize healthy plant appearance.
• Identify characteristic symptoms.
• Identify symptom variability.
• Look for signs of biotic causal agents.
• Identify Plant Part Affected – Are symptoms associated with specific plant parts?
• Check distribution of symptoms.

What are the 4 general principled in plant diseases control?

One early proposal by H. H. Whetzel included four general disease control principles, exclusion, eradication, protection and immunization (the latter principle is more appropriately called resistance since plants do not have an immune system in the same sense as animals).

What are the three components necessary for the development of disease epidemic?

The triad consists of an external agent, a susceptible host, and an environment that brings the host and agent together. In this model, disease results from the interaction between the agent and the susceptible host in an environment that supports transmission of the agent from a source to that host.

What are the classifications of plant disease based on several criteria?

According to this criterion, plant diseases are classified into two types: infectious (biotic) diseases, which are caused by eukaryotes, prokaryotes, parasitic higher plants, viruses/viroids, nematodes, and protozoa, and noninfectious (abiotic) diseases, which are caused by different extreme environmental conditions [5 …

What are the methods of plant disease management?

Reducing the level of infestation involves cultural practices, such as sanitation, removing diseased plants or plant parts, rotating crops, eliminating weeds or other plants that may be alternate hosts for the disease, and discouraging or preventing insect vectors.

What is the best method to control plant disease?

Using resistant varieties is the most efficient way of controlling vegetable diseases. Make an effort to buy resistant varieties when they are available. Seed catalogs generally list resistant traits of the various vegetable varieties. The selection of planting date can be an effective tool for disease management.

Which of the following is the best method to control plant diseases?

Biological control is done by the use of biopesticide which takes a time to kill pathogen and it is not the permanent solution. Thus, the correct answer is option B.

What are the principles of plant protection?

Plant protection: exclusion, eradication, resistance, therapy, cultural practices, chemical and biological control.

Why plant disease management is necessary?

The goal of plant disease management is to reduce the economic and aesthetic damage caused by plant diseases. Traditionally, this has been called plant disease control, but current social and environmental values deem “control” as being absolute and the term too rigid.

What are the required components for disease?

Among the simplest of these is the epidemiologic triad or triangle, the traditional model for infectious disease. The triad consists of an external agent, a susceptible host, and an environment that brings the host and agent together.

What are the principles of treatment of disease?

Kill the cause of the disease: Use medicines that can kill the pathogens. Each microbe undergoes some specific biochemical life process which helps them to survive. The intake of certain drugs that block these biochemical processes can help in killing the microorganism causing the disease.