How does a potato farmer minimize disease and pest problems?

• A. By using only organic fertilizers
• B. By planting a single cultivar each season
• C. By growing multiple cultivars each season
• D. By rotating potato crops every year

Answer: (C)

A potato farmer minimizes disease and pest problems by growing multiple cultivars each season because this practice increases genetic diversity in the crop. Different cultivars may have varying resistances to specific diseases and pests, which can reduce the likelihood of a widespread outbreak affecting the entire crop. This diversity allows for a more resilient agricultural system, where if a particular pest or disease targets one cultivar, others may be less affected, thus providing a safeguard against total crop loss.

In addition, planting multiple cultivars can disrupt the life cycles of pests, as they may not be able to adapt or thrive on multiple plant types, further reducing the impact of infestations. This approach not only promotes a healthier crop but also contributes to the overall sustainability of farming practices by minimizing reliance on chemical interventions.