What is the difference between economic threshold and economic injury level in integrated pest management?

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Multiple Choice

What is the difference between economic threshold and economic injury level in integrated pest management?

In IPM, two thresholds guide when to act. The economic injury level is the pest density at which the losses from pest damage equal the cost of control, meaning if pests reach this point and nothing is done, economic damage will occur. The economic threshold (action threshold) is the pest density at which you should start control to prevent the population from reaching that injury level. In practice, the threshold is set below the EIL to allow time for detection, decision, and application of control before damage becomes economically significant. So the best description is that you initiate control at the economic threshold to keep populations from reaching the economic injury level, which is the point at which economic damage would occur if left unchecked.

In IPM, two thresholds guide when to act. The economic injury level is the pest density at which the losses from pest damage equal the cost of control, meaning if pests reach this point and nothing is done, economic damage will occur. The economic threshold (action threshold) is the pest density at which you should start control to prevent the population from reaching that injury level. In practice, the threshold is set below the EIL to allow time for detection, decision, and application of control before damage becomes economically significant. So the best description is that you initiate control at the economic threshold to keep populations from reaching the economic injury level, which is the point at which economic damage would occur if left unchecked.

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