Biological control is particularly desirable because the tactic is environmentally safe, energy self-sufficient, cost-effective, sustainable, and can be readily incorporated into integrated pest management (IPM) programs. Furthermore, in many cases benefits from the use of natural enemies accrue at no additional cost.
The biological method has an advantage over the chemical method in synthesizing GNPs due to reduced toxicity, cost-effectiveness, eco-friendliness, wide availability, and nontoxic nature.
Biopesticides are usually inherently less toxic than conventional pesticides. Biopesticides generally affect only the target pest and closely related organisms, in contrast to broad spectrum, conventional pesticides that may affect organisms as different as birds, insects and mammals.
Biological control is an alternative to using pesticides and involves using one species or biological agent to control the population size of another species. The organism used is called a biological control agent. By releasing a natural predator into the crop growing area, the number of pests can be reduced.
In some cases, biological control is more costly than pesticides. Often, the results of using biological control are not as dramatic or immediate as the results of pesticide use. Most natural enemies attack only specific types of insects, whereas broad-spectrum insecticides may kill a wide range of insects.
Biological control is particularly desirable because the tactic is environmentally safe, energy self-sufficient, cost-effective, sustainable, and can be readily incorporated into integrated pest management (IPM) programs. Furthermore, in many cases benefits from the use of natural enemies accrue at no additional cost.
Pesticides are hazardous to our health. pesticide exposure range from mild symptoms of dizziness and nausea to serious, long-term neurological, developmental and reproductive disorders.”
Natural pest control products are made from ingredients that are safe for humans and animals, and they're just as effective as chemical pesticides. However, they typically have a shorter residual effect than harsh chemicals. This means they lose their effectiveness after several weeks because they begin to break down.
There are many examples of successful classical biological control programs. One of the earliest successes was with the cottony cushion scale, a pest that was devastating the California citrus industry in the late 1800s. A predatory insect, the vedalia beetle, and a parasitoid fly were introduced from Australia.
1.2 Bio-control Agents:
These are the natural enemies of pests, which can intervene the life cycle of insect pests in such a way that the crop damage is minimized. They are both less toxic and more flexible than chemical pesticides.
Although, a few drawbacks have reduced their acceptability and commercial utilization, yet, biopesticides are highly specific in their target, have a short shelf life, are less persistent in the soil environment, and originate from sustainable raw materials, unlike synthetic pesticides (Kumar et al., 2021).
But biopesticides can be quite expensive compared to synthetic pesticides. They often don't work as quickly and they have to be applied more frequently, making them a tough sell in some markets. Paul Underhill, co-owner of Terra Firma Farm, an organic grower in Winters, Calif., has tried a few.
Answer: Biological control is better than the use of weedicides and pesticides as it does not damage crops. Biological method is eco-friendly and doesn't cause any harm to the environment unlike weedicides and pesticides as they degrade the quality of soil. It is also less expensive than chemical control.
By looking at the biological bases of human behavior, psychologists are better able to understand how the brain and physiological processes might influence the way people think, act, and feel.
Chemical Pest Control Methods – The most well-known way of controlling pests is by using pesticides and rodenticides. Chemical types of pest control have been seen as reliable, and tackle a large portion of the pest population. Pesticides are usually used in certain circumstances where no other method will work.
Since biological controls are naturally occurring organisms, at the end of their life they completely biodegrade and leave no harmful residues on the crop or in the environment. This feature helps promote the safety and well-being of people who work on farms and the environment.
Vinegar and hot water are effective at killing most weeds, but care must be taken because they could also kill surrounding plants you want to keep. These treatments are best used for treating weeds in sidewalk cracks, patios, or other hard surfaces. Optional: add salt to prevent weeds from coming back.
Biological treatment processes typically take longer to achieve desired treatment goals compared to some chemical methods. This extended treatment time can be a drawback for industries with stringent discharge requirements or limited space for on-site treatment facilities.
In the paradox of biological control, simple predator–prey theory was used to show that the most efficient control agents caused the most extreme pest outbreaks, since efficient agents overexploited resources and died quickly, allowing pests to resurge in great numbers while agent populations slowly recovered5.
Chronic health effects include cancer and other tumors; brain and nervous system damage; birth defects; infertility and other reproductive problems; and damage to the liver, kidneys, lungs and other body organs.
People should stay out of the treated area for a minimum of 12 hours after the pesticide has been applied, unless a longer time is specified on the label. Pregnant women may be more sensitive to the strong smell of some pesticides.
Insecticides can kill the good guys
Yet most insecticides can't distinguish between the animals we want and those we don't. By spraying an insecticide, you could accidentally kill the natural enemies that keep pests in check, or an insect that is the main food source of our beautiful songbirds.