Table of Contents
Why is the development of plants that are resistant to insects especially important?
Often both a resistant and susceptible variety will have the same basic response to a pest, but the resistant variety will respond more quickly or more dramatically than the susceptible variety, reducing the amount of damage the pest causes. Plants that express antibiosis affect the biology of pests.
What are the advantages of the use of insect-resistant crop varieties?
Thus, a major advantage to the use of insect-resistant crop varieties as a component of IPM arises from the ecological compatibility and compatibility with other direct control tactics. Insect-resistant cultivars synergize the effects of natural, biological, and cultural insect pest-suppression tactics.
How do insects affect agriculture?
They have a direct impact on agricultural food production by chewing the leaves of crop plants, sucking out plant juices, boring within the roots, stems or leaves, and spreading plant pathogens. They feed on natural fibers, destroy wooden building materials, ruin stored grain, and accelerate the process of decay.
How can we reduce pests in agriculture?
Prevent the Introduction and Spread of Pests
- Consider disease potential when selecting planting sites, dates, and seeding rates.
- Use disease-free and weed-free seed to prevent diseases and weeds from being introduced.
- Control alternate host plants of insects and diseases.
What is the pest resistant plant explain in brief with the help of example?
Pest resistant crops. Pest resistant GMcrops (primarily cotton and maize), have been genetically modified so they are toxic to certain insects. They are often called Bt crops because the introduced genes were originally identified in a bacterial species calledBacillus thuringiensis.
What are the importance of host plant resistance in biological control?
Host plant resistance and biological control are two of the key pillars of integrated pest management; their potential interactions, whether they are synergistic, complementary, or disruptive, are key in understanding and achieving sustainable and effective pest management.
Why resistant varieties are important in organic farming?
Resistant varieties suppress or retard a pathogen’s activity and show little or no symptoms of infection. Tolerant varieties do not significantly inhibit the pathogen: they may show severe disease symptoms but without significant losses in yield or quality.
What are the advantages and disadvantages of development of genetically modified crops that are resistant to pests?
The pros of GMO crops are that they may contain more nutrients, are grown with fewer pesticides, and are usually cheaper than their non-GMO counterparts. The cons of GMO foods are that they may cause allergic reactions because of their altered DNA and they may increase antibiotic resistance.
Why is pest control important in agriculture?
Without crop protection, including pesticides, more than half of the world’s crops would be lost to insects, diseases and weeds. Pesticides are important. They help farmers grow more food on less land by protecting crops from pests, diseases and weeds as well as raising productivity per hectare.
What are 5 reasons insects are beneficial and important to the environment?
However, they are crucial to the local ecosystem. Bugs provide a valuable addition to the food chain and help support and sustain the lives of many other creatures….5 Reasons Bugs Are Important To Humans
- 5 Reasons Bugs Are Important To Humans.
- Insects Recycle.
- Controlling Bad Bugs.
- Stronger Plants.
- Food for Life.
How are crops protected from insects and pests?
Certain cultural practices can prevent or reduce insect crop damage. These include destruction of crop residues, deep plowing, crop rotation, use of fertilizers, strip-cropping, irrigation, and scheduled planting operations.
How do plants control pest and diseases?
The best way to control both pests and diseases is to keep plants healthy.
- Build healthy soil. Healthy soil provides a home to friendly insects and helps prevent many plant diseases.
- Plant resistant varieties.
- Space plants correctly.
- Plant at the right times.
How does the development of disease-resistant plants enhance food production?
How does the development of disease-resistant plants enhance food production? Explanation: When there are crop losses, then breeding and development of cultivars resistant to disease enhance food production. This also helps reduce the dependence on the use of fungicides and bacteriocides.
What is the advantages of host plant resistance?
Host plant resistance (HPR) makes use of the fact that all wild plants have many adaptations to protect themselves from insect herbivores and diseases. These adaptations can be used to protect crops from herbivores and diseases in agricultural systems.
What are the importance of host plant resistance in pest management?
HPR will not only cause a major reduction in pesticide use and slowdown the rate of development of resistance to insecticides in insect populations, but also lead to increased activity of beneficial organisms and reduction in pesticide residues in food and food products.
What is insect-resistant plant?
Insect-resistant crops have been one of the major successes of applying plant genetic engineering technology to agriculture; cotton (Gossypium hirsutum) resistant to lepidopteran larvae (caterpillars) and maize (Zea mays) resistant to both lepidopteran and coleopteran larvae (rootworms) have become widely used in …
Why is it important for farmers to control pests?
What agricultural practices can be applied to prevent pest and diseases?
Plant Diseases. Planting Trees and Crops Together. Saving Seeds. Safe Food Storage….The best way to control both pests and diseases is to keep plants healthy.
- Build healthy soil.
- Plant resistant varieties.
- Space plants correctly.
- Plant at the right times.
Is pest resistant crops good?
Pest resistant GM crops (primarily cotton and maize), have been genetically modified so they are toxic to certain insects. They are often called Bt crops because the introduced genes were originally identified in a bacterial species called Bacillus thuringiensis.
How can genetic engineering reduce the amount of insecticides used in agriculture?
GMOs have been changing the way that pesticides are used in agriculture. Herbicide-tolerant genetically modified (GM) crops have led to an increase in herbicide usage while insecticide-producing GM crops have led to a decrease in insecticides.