What is one benefit of using pest-resistant crop varieties?

Using pest-resistant crop varieties primarily helps to lead to higher yield potential. This is because these varieties possess specific genetic traits that provide them with the ability to withstand or repel pest infestations. When crops are less affected by pests, they can maintain their growth and produce higher quantities of usable yield.

Moreover, pest-resistant varieties can contribute to more efficient use of resources, as there may be less need for chemical pest control measures, allowing farmers to allocate their inputs more effectively. This can also enhance the overall sustainability of the farming system by reducing dependency on synthetic pesticides.

The other choices do not represent the primary benefits of pest-resistant varieties. For example, the notion that they increase the need for chemical fertilizers does not align with the intent of developing pest-resistant crops, which often aim to reduce chemical inputs. Similarly, they are not necessarily associated with requiring more manual labor or decreasing diversity; in fact, promoting pest-resistant varieties can support biodiversity when integrated prudently within farming practices.