Atlantic
Mid-season maturity
Markets: Fresh market, chipping.
Uses: boiling,
baking, chipping and French-frying.
Plants: Moderately large, thick upright stems, purple at the base
with an irregular pigmentation pattern upward; nodes slightly swollen; wings prominent.
Leaves: Close, bright, medium
green, smooth, and moderately pubescent. Large asymmetrical primary leaflets and numerous secondary and tertiary leaflets.
Flowers: Numerous, heavily pubescent buds, pale lavender, orange anthers and abundant pollen.
Tubers: Oval to round
with lightly netted to heavily scaled skin, shallow eyes, and white flesh. Tuber dormancy is medium-long. Purple sprouts.
Immune to tuber net necrosis and PVX. Resistant to race A of the golden nematode. Moderately resistant to common
scab, late blight, bacterial pink eye disease and verticillium wilt. High yielding variety, high specific gravity and uniform
tuber size and shape. Tubers are susceptible to internal heat necrosis, especially in sandy soils. Hollow heart in
the larger tubers can be serious in some growing areas. Moderate fertilization, close spacing and proper timing of overhead
irrigation will prevent the production of oversized tubers that might have hollow heart. Atlantic is the standard variety
for chipping from the field or from very short-term storage.
CalWhite
Mid to late season maturity
Markets: fresh market,
processing of French-fries.
Uses: excellent for baking and
French-frying.
Plants: Plants
are large with an upright growth habit, wings prominent, very slightly swollen nodes, not pigmented.
Leaves: medium green, semi-open, moderately pubescent.
Flowers: medium-sized, numerous, white corolla, yellow-orange anthers.
Tubers: oblong, large, rough to netted buff skin; medium deep eyes, moderate in number, slightly
prominent eyebrows; white flesh. Dormancy is short. Broad purple sprouts.
Reaction to diseases: Moderately susceptible to PVY, early blight, verticillium wilt. Susceptible to common scab,
leaf roll, storage soft rot. CalWhite is medium maturing and is a very high yielding variety with few tubers per plant. It
is suitable for the long-white table stock market and has potential for use in the frozen processing trade. Spacing between
plants should be very close to avoid oversize tubers. Performs well in hot climates; may form heat sprouts under high soil
conditions. Resistant to growth cracks, second growth, shatter bruise, hollow heart and heat necrosis. Moderately resistant
to blackspot bruises. Susceptible to net necrosis caused by leafroll. Short dormancy period, medium high specific gravity.
Chieftain
Maturity: mid-season
Market: seed export,
fresh market, and pre-peeled product in the institutional trade.
Uses: good to excellent
for boiling, good for chipping at harvest, excellent for french frying; not suitable for processing.
Plants: Medium sized, upright, spreading
at maturity, Stems are medium green, wings prominent.
Leaves: Dark green, semi-open, slightly pubescent with numerous
secondary leaflets.
Flowers: Large, light violet, anthers are yellow, with a moderate amount of fertile pollen.
Tubers: Oval to oblong, medium thick, bright red skin, white flesh. Eyes are shallow and well-distributed,
medium dormancy, sprouts are reddish purple.
Reaction to Disease: Moderately resistant to late blight, common scab, rhizoctonia, silver scurf, stem-end
browning, tuber net necrosis, verticillium wilt. Susceptible to black leg, fusarium dry rot, leaf roll, phoma rot, PVX and
PVY. Chieftain has medium maturity, good yield potential and is widely adapted. Tubers are attractive and well suited for
the table stock market. Chieftain is moderately resistant to scab, resistant to mild mosaic, stem end browning and net necrosis
caused by current season leaf roll. Well suited for washing at maturity. Good storability. Medium specific gravity.
