By Caroline Stocks

How does integrated pest management reduce pesticide use? Everything you need to know about IPM

The useof Interest in Integrated Pest Management (IPM) is growing around the world as a way to promote more sustainable, cost-effective and effective pest management practices that protect human health and the environment.

As awareness of the importance of sustainable agriculture and the need for responsible pest management continues to grow, IPM practices are likely to become a mainstay of crop production. Here, Farming Future Food takes a look at that IPM actually is, how it works and how it can play a role in sustainable global agriculture.

Red and green tomatoes on a vine

Integrated Pest Management (IPM) is a pest control strategy that aims to manage pests in an effective, economical and environmentally friendly way,  minimising the use of chemical pesticides  that can have a negative impact on the environment.

It’s a holistic approach that considers the pest, the crop, the environment, and available control methods to develop a comprehensive management plan, including:

  1. Monitoring and identifying pest populations to determine the need for pest control
  2. Setting action thresholds that determine when pest populations reach a level that need action
  3. Preventing pest problems through management practices such as crop rotation, sanitation, and habitat manipulation
  4. Using biological controls, such as natural predators or parasitoids, to manage pest populations
  5. Using mechanical controls like trapping or physical removal of pests
  6. Using chemical controls, such as pesticides, as a last resort and only when necessary
  7. Evaluating the effectiveness of pest management plans and making necessary adjustments

Bee on purple flower

Integrated Pest Management (IPM) attempts to limit the use of pesticides for several reasons:

  1. Environmental impact: Pesticides can have negative effects on the environment, including the contamination of soil, water, and air, and harm to non-target organisms such as beneficial insects, birds, and mammals. By minimising the use of pesticides, IPM can help to reduce their impact on the environment.
  2. Human health: Pesticides can also have negative effects on human health. By minimising the use of pesticides, IPM can help to reduce the risk of exposure to toxic chemicals for farmers, farm workers and consumers.
  3. Economic impact: Pesticides can be expensive to buy and apply. By minimising the use of pesticides, IPM can reduce production costs and improve the economic viability of farm businesses.
  4. Pesticide resistance: Overuse of pesticides can lead to the development of resistance in pest populations, making the pesticides less effective over time. By minimising the use of pesticides, IPM can reduce the risk of pesticide resistance and preserve the effectiveness of pest control tools.

IPM reduces reliance on chemical pesticides in a variety of ways:

  1. IPM involves regular monitoring of pest populations to determine the need for control measures. By identifying pest populations early, IPM can help to prevent them from reaching levels that need chemical control.
  2. IPM emphasizes the use of non-chemical pest control methods, such as cultural and mechanical controls, to manage pests. These include practices such as crop rotation, planting resistant varieties, using traps and removing infested plant material, creating an environment that is less hospitable to pests.

    Plant shoots in farm soil
  3. Biological controls, such as natural predators or parasitoids, are an important part of IPM. By using natural enemies of pests, IPM can reduce pest populations without using chemical pesticides.
  4. When pesticides are used as part of an IPM program, they are applied in a targeted and precise way, using the least toxic and most effective options available. The timing of pesticide application is carefully planned to coincide with the pest’s life cycle, and the amount of pesticide used is minimised to reduce its impact on non-target organisms and the environment.
  5. IPM focuses on preventing pest problems before they occur by using management practices like crop rotation, sanitation and habitat manipulation to create an environment that’s less hospitable to pests. This reduces the need for reactive pest control measures, which are often less effective and more costly.

 

An IPM program uses a variety of tactics to manage pest populations while minimising chemical pesticide use.

Tailored to the specific needs of a particular crop, environment, or situation, it typically involves:

  1. Monitoring and identifying pest populations over time
  2. Setting action thresholds based on the monitoring data
  3. Using management practices such as crop rotation or habitat manipulation to prevent pest problems before they occur.
  4. Using biological controls, such as natural predators or parasitoids, to manage pest populations without the use of chemical pesticides.
  5. Using mechanical controls, such as trapping or physical removal of pests.
  6. Only using chemical controls as a last resort. The use of pesticides is carefully timed and targeted to minimise their impact on non-target organisms and the environment.
  7. Continually evaluating the effectiveness of an IPM program and adjusting the pest management plan as necessary.

IPM is an effective pest management strategy for several reasons:

  1. Reduced reliance on chemical pesticides: IPM emphasises the use of non-chemical pest control tactics, such as cultural, mechanical, and biological controls to manage pests. 
  2. Targeted and precise use of pesticides: When pesticides are used, they’re applied in a targeted and precise way, using the least toxic and most effective option available. The timing of application is carefully planned to coincide with the pest’s life cycle, and the amount of pesticide used is minimised to reduce its impact on non-target organisms and the environment.
  3. Prevention of pest problems: IPM focuses on preventing pest problems before they occur by using practices like crop rotation to create an environment that is less hospitable to pests.
  4. Flexibility: IPM is a flexible approach that can be tailored to the specific needs of a particular crop or environment. The pest management plan is continuously evaluated and tweaked to ensure its effectiveness over time.
  5. Cost-effective: IPM is a cost-effective approach to pest management that can help farmers and other pest managers to save money on inputs while reducing the risk of crop damage and losses. 

IPM aims to minimise the use of chemical pesticides, but it doesn’t rule out their use entirely.

IPM can use pesticides as part of a broader pest control plan, but the emphasis is on using a variety of tactics to manage pests.

When pesticides are used as part of an IPM program, they’re typically chosen and applied in a targeted and precise way, using the least toxic and most effective option available. The use of pesticides is always a last resort in IPM, and their application is carefully timed and targeted to minimise their impact on non-target organisms and the environment. 

Field of maize

IPM can be used in both organic and conventional farming systems.

While IPM does not necessarily require the use of organic inputs, it is compatible with organic farming systems because it emphasises the use of non-chemical pest control tactics, such as crop rotation, cultural practices, and the use of beneficial insects. The use of pesticides in IPM is minimised, and when used, the least toxic and most effective options are selected, in line with organic farming principles.

Young corn plants

IPM can have positive effects on the environment by reducing the use of chemical pesticides and promoting more sustainable pest management practices:

  1. Reduced environmental contamination: By using non-chemical pest control methods and minimising the use of pesticides, IPM can help to reduce the amount of toxic chemicals released into the environment, including water, soil, and air. This can help to protect ecosystems and wildlife.
  2. Preservation of natural enemies: Biological controls, such as the use of natural predators or parasitoids, are an important part of IPM. By preserving natural enemies of pests, IPM can help to promote biodiversity and reduce the need for chemical pesticides.
  3. Protection of human health: The reduced use of chemical pesticides in IPM can help to protect the health of farmers, farm workers and consumers by reducing their exposure to toxic chemicals.
  4. Reduced risk of pesticide resistance: The targeted and precise use of pesticides in IPM can help to reduce the risk of pests developing resistance to chemical pesticides.
  5. Prevention of secondary pest outbreaks: The use of non-chemical pest control methods,  can help to prevent secondary pest outbreaks that can occur as a result of the disruption of natural pest control mechanisms.
  6. Improved soil quality: Cultural practices, such as crop rotation, can help to improve soil quality and reduce the need for synthetic fertilisers.

The regulations around IMP vary from country to country, but there are several international agreements and guidelines that promote its use as a sustainable and environmentally friendly approach to pest management. Some of these include:

  1. International Code of Conduct on Pesticide Management: The International Code of Conduct on Pesticide Management is a voluntary agreement developed by the Food and Agriculture Organisation (FAO) that provides guidance on the responsible use of pesticides, including IPM.

  2. Stockholm Convention on Persistent Organic Pollutants: The Stockholm Convention is an international treaty that aims to eliminate or restrict the production and use of persistent organic pollutants (POPs), including some pesticides. The Convention encourages the use of alternatives to POPs, such as IPM.

  3. The World Health Organization (WHO) guidelines for IPM: The WHO has developed guidelines for the use of IPM in vector control, which emphasises the use of non-chemical control methods, such as environmental management and the use of biological controls, to manage disease-carrying insects.

  4. European Union (EU) legislation on pesticides: The EU has developed legislation that regulates the sale and use of pesticides, including the requirement for member states to promote the use of IPM. The legislation also includes the requirement for risk assessments and the establishment of maximum residue levels for pesticides in food.

  5. United States Environmental Protection Agency (EPA) guidance on IPM: The EPA provides guidance on the use of IPM in pest control, including the development of pest management plans, the use of non-chemical control methods, and the use of the least toxic and most effective pesticide options.

Yes, IPM has a place in the Environmental Land Management Scheme (ELMS) in England. 

One of the key objectives of the ELMS is to encourage sustainable farming practices, including the use of IPM to reduce the use of chemical pesticides and promote alternative methods of pest management. The scheme is designed to provide financial incentives to farmers and land managers who adopt sustainable practices, such as the use of IPM, to deliver environmental benefits, such as improving soil health, enhancing biodiversity, and reducing greenhouse gas emissions.

Maize field

Farmers and land managers who participate in the ELMS will be required to develop and implement an Environmental Land Management Plan (ELMP), which will set out the actions they will take to deliver public goods on their land. The use of IPM is likely to be an important component of many ELMPs, as it is seen as a key part of sustainable pest management practices.

In addition to the financial incentives provided by the ELMS, there are a range of other government programs and initiatives in England that promote the use of IPM, such as the Sustainable Farming Incentive (SFI), which aims to encourage the adoption of sustainable farming practices, including the use of IPM.

Tractor spraying a field

In the UK, there are a range of rules and guidelines around IPM that aim to promote the sustainable and responsible use of pesticides and encourage the adoption of alternative pest management methods:

  1. The Sustainable Use of Pesticides Directive is a European Union directive that aims to promote the sustainable use of pesticides, including the use of IPM. The directive requires member states to develop national action plans that promote the use of IPM and establish measures to reduce the risks and impacts of pesticide use.

  2. The UK National Action Plan sets out the government’s strategy for promoting the sustainable use of pesticides in the UK, including the promotion of IPM. The plan includes measures to reduce the risks and impacts of pesticide use, such as reducing the amount of pesticides used in public spaces and increasing the availability of training and information on IPM.

  3. The Code of Practice for Using Plant Protection Products is a UK government publication that provides guidance on the safe and effective use of plant protection products, including pesticides. The Code emphasises the importance of using IPM and provides guidance on how to implement IPM strategies.

  4. The Reducing Pesticide Use on the Farm initiative is a voluntary program developed by the UK government that aims to reduce the use of pesticides on farms and promote the use of IPM. The program provides training and support to farmers to help them implement sustainable pest management practices.

  5. The Farming Rules for Water are a set of regulations that apply to all farmers in England and require them to take steps to reduce water pollution from farming activities. The rules encourage the use of IPM as a way to reduce the amount of pesticides that enter watercourses.

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