Once established they will persist in the soil for many years and even a four-year rotation is not adequate to significantly reduce levels. The best control is prevention through the use of certified seed and a minimum of four-year rotation. Soil texture strongly influences the ability of the soil to retain moisture, its general level of fertility and ease of cultivation. Soil textural classes. Well drained soils such as loamy sands, and sandy loams and are considered best for potato production.
Soil drainage is influenced by slope, climate, soil texture and proximity to the water table.
Well drained soils such as loamy sands, and sandy loams and are considered best for potato production. Good drainage reduces the possibility of disease and the risk of waterlogged soils that delay harvest. If the soil is dry at harvest, it is difficult to separate the soil lumps from the potatoes. Tubers harvested from a wet clay soil will also require washing to remove soil particles. These soils are not considered suitable for commercial potato production.