Summit Farms - Atlantic

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Atlantic

Atlantic is widely grown for making chips and french fries. It produces white tubers and works best if grown in northern climates. It is a dry type potato that is good for frying, boiling and baking. Atlantic is a medium to late maturing potato released in 1976 by Webb et al. USDA - Beltsville, Maryland. It is primarily a chipping potato noted for its light chip color. It also is considered a good baker, has wide adaptability to a diverse range of irrigated growing conditions. Plant/roots relatively fast emergence, vine is medium large and upright with many faint lavender flowers; indeterminate growth habit; has a shallow, concentrated root system.

Tubers are smooth white fleshed, oval to round with light to heavy tan skin usually with a slight net. Eyes are shallow and well distributed; consistently high specific gravity equal to 1.090. yield potential is 450 to 500 cwt. Pre plating considerations tubers have medium dormancy; single drop or cut seed is acceptable. Germination tends to be uniform, regardless of eye location on the tuber. Avoid warming seed for more than one week (60F) prior to cutting, to prevent excessive sprouting. When using cut seed, pay special attention to proper sanitation and provide optimum healing conditions since threat of seed-piece decay caused by Erwinia carotovra dn/.or Fusarium spp. can be significant. Plant this cultivar 2 to 4 inches deep in a flat hill or up to 6 inches deep in a peaked hill. Apply total fertilizer in the following range:N(I 70-1 80#), P(I 20-1 90#), K(O-60#). Performance in alkali soils is good Pre plant incorporated N should be 80 to

90#. Early season N applications do not adversely affect the timing of tuberization. Sprinkler applied N should be in 90 to 100# range at a rate of 20# per application, no later than mid August. Irrigation interval at the maximum ET is 2 to 2.5 days. Drought tolerance is moderate. Completion against weeds is good. This cultivar is sensitive to post emergence applications of metribuzin. Standard insect control measures generally are effective. Two to three fungicide application may be necessary to control foliar early blight. Tubers set in the middle of the hill; rapid tuber bulking occurs early in the season. Tubers are susceptible to hollow heart, blackspot, shatter bruise but moderately resistant to growth cracks and resistant to second growth. Under server, hot conditions, especially in sandy soils, tubers may have internal brown spot ie, heat necrosis. Average days from plating to vine kill are 100 to 110. Vine killing is required during most years; relatively easy

to achieve after maturity is reached. Adequate skin set occurs within 14 to 21 days. tubers can become very large late in the season, thus monitoring is necessary after mid August. Atlantic stores well if tubers are carefully harvested and not bruised. Susceptibility to bruising requires extra attention during harvest and handling into storage. Fusarium seed piece decay can be a problem during long-term storage for chips with extreme caution. When using CIPC to control sprouting, delay application until wound healing is complete. Overall disease problems are minimal. Bacterial ring rot foliar symptom expression occurs within 90 days after planting. PVY expression may be mild. Susceptible to Bacterial Ring Rot, Foliar Early Blight, Blackleg, Seed piece Decay, Leafroll Virus and PVY. Moderate to Berticillium wilt, Common Scab, and immune to Leafroll Net Necrosis and PVX. In Storage: Susceptible to Bacterial Soft Rot, Fusaruim Dry Rot, Leak and Pink Rot. Moderate to Tuber Early Blight, Rhizoctonia Scurf. Silver Scurf - Unknown. Disease reaction ratings susceptible, moderately susceptible, moderate, moderately resistant and resistant.

Growing Season: Mid: 90 - 100