Practice
Integrated pest management
Also known as: IPM
An ecological approach to agricultural pest management that uses pest population monitoring, threshold-based decision making, and a hierarchy of intervention methods (biological, cultural, mechanical, then chemical only as last resort) to manage pest populations below economic injury levels with minimum disruption of beneficial organisms and ecosystem function. Developed in the 1950s and 1960s in response to the documented failures of calendar-spray pesticide regimes (resistance development, secondary pest outbreaks, beneficial-organism kills, environmental contamination — the issues Rachel Carson named in *Silent Spring*). Today the standard pest-management approach in U.S. organic agriculture, much of conventional agriculture, and most academic-extension programs.
Practical
The five steps of IPM:
- Identify the pest accurately. Many “pest” sightings turn out to be beneficial insects, look-alikes, or pests at population levels that don’t justify intervention. Misidentification drives a substantial fraction of unnecessary pesticide application.
- Monitor pest population and damage. Use scouting protocols, sticky traps, pheromone traps, or visual inspection on a regular schedule. Establish baseline pest pressure for the cropping system.
- Establish economic injury levels and thresholds. The economic injury level is the pest density at which control cost equals control benefit. The threshold is the pest density at which intervention is triggered (usually slightly below the injury level, allowing time for action). For most pests in most crops, threshold is well above zero — the goal is management, not eradication.
- Apply controls in hierarchy. Cultural controls first (sanitation, [[crop-rotation|crop rotation]], resistant varieties, planting timing). Biological controls next (release or conservation of natural enemies, beneficial-insect habitat). Mechanical controls (row covers, hand-removal, traps). Chemical controls only when the threshold is exceeded and the prior methods have not been adequate; preferring the least-broadly-toxic, most-target-specific available product.
- Evaluate and adjust. After each intervention, assess effectiveness, ecological side effects, and long-term population trends. Adjust the management approach for next season.
Cultural
IPM was developed in the 1950s and 1960s primarily at the University of [[berkeley|California]] [[berkeley|Berkeley]] and Riverside campuses (notably by entomologists Vernon Stern, Ray Smith, Robert van den Bosch, and Kenneth Hagen) in response to the increasingly-documented failures of post-WWII calendar-spray pesticide regimes. Resistance evolution, secondary-pest outbreaks, and beneficial-insect kills had become impossible to ignore by the late 1950s; Silent Spring (1962) made the issues public; IPM emerged as the practical framework for working agriculture’s response.
The framework has been the standard pest-management approach in U.S. [[organic-agriculture|organic agriculture]] since the certification systems began formalizing in the 1980s; it is also widely used in [[industrial-agriculture|conventional agriculture]], particularly on high-value specialty crops where calendar-spray costs are substantial. Cooperative-extension IPM programs at U.S. land-grant universities support farmer adoption through scouting protocols, threshold publications, and pest-prediction models.
See also
Auto-generated from this entry’s typed relations: frontmatter, grouped by relation type so the editorial signal isn’t flattened.
- Shares approach with: [[organic-farming]] · [[companion-planting]]
- Counterpart to: [[industrial-agriculture]]
- Member of: [[practice]]
- Practiced by: [[march-farms]]
What links here, and how
Inbound connections from across the wiki, grouped by lens and by relationship. These appear automatically — every entity page declares what it links to, and that data populates here on the targets.
Scientific
opposes
- Pesticide Treadmill IPM — using crop rotation, biological control, scouting, and chemical inputs only as last resort — is the structural alternative to the treadmill
Practical
shares approach with
- Crop rotation rotation is the foundational cultural-control method in IPM — disrupting host-pest specificity
- Stony Grove owners are certified private pesticide applicators using IPM
practices
- March Farms ladybug releases in greenhouses for aphid control
4 inbound links · 4 outbound