Avoid warming seed at 60 F for more than one week prior to cutting, to prevent excessive sprouting. Plant this cultivar 3 to 4 inches deep in a flat topped hill or up to 6 inches deep in a peaked hill. Centennial is sensitive to phosphate deficiencies and imbalances. N applications do not adversely affect the timing of tuberization. Irrigation Irrigation interval at the maximum ET is three days.
Drought tolerance is moderate to poor due to a limited root system.
Illvater stress will affect tuber quality. Excess water can cause enlarged lenticels that remain visible throughout storage and act as entry points for disease organisms. Pest Control Weeds Competes well against weeds, but is sensitive to post-emergence applications of metribuzin. Insects Psyllid injury is common and easily seen in this cultivar. Fungicides One to three applications may be necessary for the control of foliar early blight.