Which of the environmental factors, in your opinion, are most likely to become limiting for potato yield?

Which of the environmental factors, in your opinion, are most likely to become limiting for potato yield? How can this be used in agriculture?

Limiting factors for potato productivity can be a lack of sunlight, the presence of pests in the soil and high humidity. Because with a strong effect of one of these factors, they can affect the harvest.
In agriculture, measures can be taken to obtain the greatest yield: plant potatoes in greenhouses with ultraviolet lamps, which will compensate for the lack of light; treat the cartel with chemicals, this compensates for the presence of pests in the soil; drain and loosen the soil, these actions can compensate for the factor of increased moisture.