Question

Natural pest controlling methods are useful to biodiversity. Explain.

Answer 1

Hint: Natural pest control is also known as Biological pest control. This is a method to control pests such as weeds, insects, mites, and plant diseases by using some other organisms. Their mechanism mainly relies on herbivory, parasitism, and predation.

Complete answer:
The methods included in the natural pest-controlling are the uses of genetically modified organisms, some agricultural methods, and organic oils. Genetically modified organisms are the organisms whose genetic material is being altered under the laboratory conditions so that it can serve the human purpose. For encouraging the growth of a different variety of crops on the same plant, the agronomists suggest the methods of mixed cropping, crop rotation, intercropping and so on uplifts the growth of different plants on the same land to the farmers.

As a result, the biodiversity on the land increases, not just by various plant species but also the soil remains enriched with various nutrients for a longer period. The growth of a variety of microorganisms also increases due to this method. On the other hand, if the farmer grows the same crop again and again then the nutrient value of the soil decreases rapidly, making the soil scarce of nutrients as well as the microorganisms. Thus, the natural method of pest controlling aids in improving the biodiversity of the land.

Note: The natural pest-controlling could also have a side effect on biodiversity if in case the non-targeted species get attacked through the same mechanism. Therefore, it is necessary to only introduce this method after a thorough study of the subject.