There are many methods of monitoring. The key ones are plant examination, pheromone traps, sticky colored traps, and pitfall traps. Monitoring can be as simple as timely close observations (a magnifying lens is useful). Observing aphid buildup or disease symptoms and signs on susceptible plants might require repeated examinations. Weather can also be instrumental in determining when to monitor. Early season warming can trigger early emergence of pests and earlier damage. Monitoring is critical to the success of an IPM effort.

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