What Is The Concept Of Plant Disease?

How plant diseases affect our economy?

The most direct economic impact of a transboundary pest or disease is the loss or reduced efficiency of agricultural production – whether it be of crops or animals – which reduces farm income..

How can plant diseases be prevented?

Prevent Plant Diseases With Good Gardening PracticesFollow Good Sanitation Practices.Fertilize to Keep Your Plants Healthy.Inspect Plants for Diseases Before You Bring Them Home.Allow the Soil to Warm Before Planting.Ensure a Healthy Vegetable Garden By Rotating Crops.Water in the Morning.Mulch!More items…•

What disease is associated with bacteria?

Bacteria cause many common infections such as pneumonia, wound infections, bloodstream infections (sepsis) and sexually transmitted diseases like gonorrhea, and have also been responsible for several major disease epidemics.

What is the importance of plant diseases?

Importance of Plant Diseases The study of plant diseases is important as they cause loss to the plant as well as plant produce. The various types of losses occur in the field, in storage or any time between sowing and consumption of produce. The diseases are responsible for direct monitory loss and material loss.

What is plant disease control?

A variety of chemicals are available that have been designed to control plant diseases by inhibiting the growth of or by killing the disease-causing pathogens. Chemicals used to control bacteria (bactericides), fungi (fungicides), and nematodes (nematicides) may be applied to seeds, foliage, flowers, fruit, or soil.

How do you identify a plant disease?

Diseased plants can be identified by abnormal growth or by signs of the disease-causing organism, such as bacterial slime (an external sign of a disease called bacterial wet wood) or insect larvae which hatches from eggs and feeds on leaves.

How does the disease spread from one plant to another?

All viruses that spread within their host tissues (systemically) can be transmitted by grafting branches or buds from diseased plants on healthy plants. Natural grafting and transmission are possible by root grafts and with parasitic dodder (Cuscuta species). Vegetative propagation often spreads plant viruses.

What is the plant disease triangle?

The disease triangle is a conceptual model that shows the interactions between the environment, the host and an infectious (or abiotic) agent. This model can be used to predict epidemiological outcomes in plant health and public health, both in local and global communities.

What is plant disease and what are the causes?

Abstract. Infectious plant diseases are caused by living (biotic) agents, or pathogens. These pathogens can be spread from an infected plant or plant debris to a healthy plant. Microorganisms that cause plant diseases include nematodes, fungi, bacteria, and mycoplasmas.

What is plant disease cycle?

Abstract. Plant disease cycles represent pathogen biology as a series of interconnected stages of development including dormancy, reproduction, dispersal, and pathogenesis. The progression through these stages is determined by a continuous sequence of interactions among host, pathogen, and environment.

How does plant diseases affect human life?

Plant diseases are well known to reduce the food available to humans by ultimately interfering with crop yields. This can result in inadequate food to humans or lead to starvation and death in the worst cases.

What are the stages of disease cycle?

The five periods of disease (sometimes referred to as stages or phases) include the incubation, prodromal, illness, decline, and convalescence periods (Figure 2).

How do plant bacteria affect humans?

Human infection from plants is very rare, but it does happen. The primary pathogen of concern is a bacteria known as Pseudomonas aeruginosa, which causes a type of soft rot in plants. P. aeruginosa infections in humans can invade nearly any tissue in the human body, provided they are already weakened.

What is the major cause of plant disease?

Collectively, fungi and FLOs cause the most plant disease than any other group of plant pathogens. These organisms cannot make their own food, lack chlorophyll, have filamentous growth, and may or may not reproduce by spores. Fungi and FLOs are able to overwinter in soil or on plant debris.

What are the types of plant diseases?

Most plant diseases – around 85 percent – are caused by fungal or fungal-like organisms. However, other serious diseases of food and feed crops are caused by viral and bacterial organisms….Fungal disease signs:Leaf rust (common leaf rust in corn)Stem rust (wheat stem rust)Sclerotinia (white mold)Powdery mildew.