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Which statement is true about chemical control as a pest management method?

1. Pesticides play a key role in pest management programs and sometimes are the only control method available.

2. Pesticides include any material that is applied to plants and the soil but not to water or harvested crops.

3. A highly selective pesticide controls a wide variety of pests.

4. Systemic pesticides are not absorbed by treated plants or animals.

Answer :

Final answer:

The correct statement about chemical control is that pesticides are a crucial element in pest management programs and can sometimes be the sole option. These substances vary widely and tend to be highly specialized in their action, targeting specific pests to minimize non-target effects.

Explanation:

The true statement about chemical control as a pest management method is: Pesticides play a key role in pest management programs and sometimes are the only control method available. This indicates the significant role that pesticides have in agricultural and health-related contexts, as they can be highly effective and adaptable to various situations. However, it is important to note that pesticides can include a wide range of substances including herbicides, insecticides, and fungicides, and are not restricted to use on soil and plants alone but can also be applied to other areas to control pests.

Systemic pesticides are those that are absorbed by plants or animals to provide internal protection against pests. A highly selective pesticide, on the other hand, is designed to target specific pests, minimizing harm to other organisms, and does not control a wide variety of pests.

It's critical to apply pesticides judiciously as part of integrated pest management, limiting their use to situations where other ecologically based control measures are inadequate. This philosophy regards pesticides as the “last resort” and promotes applications that minimize environmental disruption.

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