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| COLORADO CERTIFIED POTATO GROWERS ASSOCIATION, Manager Preston Stanley P.O. Box 267 - Monte Vista, CO 81144 - (719)580-1296 or (719)274-5996 E-mail: CCPGA@Yahoo.com |
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| COLORADO CERTIFIED POTATO GROWERS ASSOCIATION, Manager Preston Stanley P.O. Box 267 - Monte Vista, CO 81144 - (719)580-1296 or (719)274-5996 E-mail: CCPGA@Yahoo.com |
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 DT6063-1R (Cherry Red)
- Fresh Potato An attractive, bright red-skinned, multi-purpose fresh
cultivar, medium specific gravity, unique oblong shape with bright white fleshParentage: ND4750-2R x LA1859 Developers: The Colorado, North Dakota and Texas Agricultural Experimental Stations Release: 1999 Tuber Shape: Oval to oblong Eyes: Shallow and well distributed Skin: Smooth, bright red Flesh: White Plant: Medium vine, determinate type, red-purple flowers, moderate root system Yield Potential: Very high Specific Gravity: Medium, however high for red cultivar Maturity: Medium, however, over-sized tubers may be a problem, thus carefully monitor size after 90 days Resistances: Moderately resistant to Fusarium dry rot and Rhizoctonia scurf Susceptibilities: Susceptible to foliar and tuber early blight, blackleg, seedpiece decay, potato leafroll virus, PVY, PVX, bacterial ring rot, bacterial soft rot and powdery scab, similar to Red LaSoda Storability: Good with excellent retention of red skin color, superior to nearly all reds commercially acceptable, dormancy is medium with minimal sprouting Consumer Quality: Excellent boiling and baking quality Production Management: A 9 inch spacing may optimize yield and tuber size. Apply total fertilizer slightly higher than for Red LaSoda due to the very high yield potential. Drought tolerance is moderate and water usage declines as vines mature, thus monitor late season watering carefully. Slightly sensitive to metribuzin. Eight to nine tubers are consistently set per hill. Set is somewhat shallow. Tuberization occurs early and tubers bulk rapidly For a Cultivar Specific Management Profile send an e-mail request to Dr Susie Thompson-John, Colorado State University at: slvctr@coop.ext.colostate.edu |
 AC83064-1 (Keystone
Russet) - Fresh Potato Very high yielding, medium russet-skinned, fresh market
cultivar, with low specific gravity, smooth, oblong to long tubers with white fleshParentage: A76147-2 x A7875-5 Developers: The Colorado and Idaho Agricultural Experimental Stations and USDA Release: 1999 Tuber Shape: Oblong to long Eyes: Shallow, most eyes on the bud end Skin: Smooth, medium russet Flesh: White Plant: Medium-sized, somewhat spreading vine, white flowers Yield Potential: Very high Specific Gravity: Low Maturity: Medium Resistances: Moderately resistant to blackspot bruise Susceptibilities: Susceptibilities include Fusarium dry rot, bacterial soft rot, early blight tuber decay, and Rhizoctonia scurf Storability: Good, dormancy is medium Production Management: Emergence is fairly uniform. A seed spacing of 10 to 12 inches may optimize yield and desired tuber size. Skin set can be difficult to achieve if nitrogen levels are high prior to vine dessication. Heat sprouts may occur when growing temperatures are high. Fertility needs are very minimal compared to other major Russet cultivars. AC83064-1 is sensitive to metribuzin (SencorŽ, LexoneŽ) applications. Tuber initiation and bulking rate are medium. For a Cultivar Specific Management Profile send an e-mail request to Dr Susie Thompson-John, Colorado State University at: slvctr@coop.ext.colostate.edu |
 AC83064-6 (Silverton Russet) -
Fresh and Processing Potato Attractive,
medium russet-skinned, dual purpose cultivar, with medium specific gravity, smooth, long
tubers and white fleshParentage: A76147-2 x A7875-5 Developers: The Colorado and Idaho Agricultural Experimental Stations and USDA Release: 1999 Tuber Shape: Long Eyes: Shallow, and well distributed, but with fewer eyes present on the stem end Skin: Smooth, fine-netted, golden brown russet Flesh: White Plant: Medium-sized, fairly upright vine, white flowers, moderate to shallow root system Yield Potential: Medium Specific Gravity: Medium Maturity: Medium Resistances: Moderately resistant to blackspot bruise Susceptibilities: Susceptibilities include PVY, Fusarium dry rot, bacterial soft rot, early blight tuber decay, and Rhizoctonia scurf Storability: Good, dormancy is short to medium Production Management: Emergence is fairly uniform. A seed spacing of 10 to 12 inches may optimize yield and desired tuber size. Skin set is important to achieve in order to avoid early blight tuber decay. Nutrient use is slightly less than for Russet Norkotah. AC83064-6 is sensitive to metribuzin (SencorŽ, LexoneŽ) applications. For a Cultivar Specific Management Profile send an e-mail request to Dr Susie Thompson-John, Colorado State University at: slvctr@coop.ext.colostate.edu |
 Chipeta
-Chipping Potato High yielding, chipping cultivar, well suited to irrigated production areas of
the West. Excellent chip color from long-term storage, and reduced need for inputsParentage: WNC612-13 x Wischip Developers: The Colorado and Idaho Agricultural Experimental Stations and USDA Release: 1993 Tuber Shape: Round to oval Eyes: Shallow and well distributed Skin: White to buff, occasional russet patches Flesh: White Plant: Large and erect vine, indeterminate growth type, abundant red-purple flowers, deep and spreading root system Yield Potential: High Specific Gravity: High Maturity: Medium to late Resistances: Resistant to most internal and external defects and to leafroll net necrosis and is moderately resistant to foliar and tuber early blight and to Verticillium wilt Susceptibilities: Field susceptibilities to blackleg, seedpiece decay, leafroll virus, PVY, PVX, common scab and bacterial ring rot. In storage susceptibilities are bacterial soft rot, Fusarium dry rot, Pythium leak, pink rot and moderate susceptibility toRhizoctonia Storability: Chipeta maintains good chipping quality during long-term storage. Tubers have medium long dormancy Production Management: Plants emerge quickly. Total fertilizer needs are very low compared to widely grown chipping cultivars. Excess nitrogen may delay maturity and compromise chip quality. Drought tolerance is excellent. Chipeta has shown no herbicide sensitivities. Tubers are set in the middle of the hill, but develop throughout as the season progresses and bulking is rapid mid to late season. Monitor tubers after 90 days to avoid excessive oversize For a Cultivar Specific Management Profile send an e-mail request to Dr Susie Thompson-John, Colorado State University at: slvctr@coop.ext.colostate.edu |
 Russet Nugget -
Fresh and Processing Potato A high yielding, late maturing, dual-purpose cultivar suitable
for fresh use and french fry processing, with very high specific gravity and reduced need
for inputsParentage: Krantz x AND71609-1 Developers: The Colorado and Texas Agricultural Experimental Stations Release: 1988 Tuber Shape: Long Eyes: Shallow Skin: Heavily russeted Flesh: Creamy white Plant: Very large and erect vine, indeterminate type, abundant white flowers, deep spreading root system Yield Potential: Medium to high Specific Gravity: Very high Maturity: Very late Resistances: Resistant to common scab, hollow heart, second growth, shatter and blackspot bruise. Moderately resistant to foliar and tuber early blight, Verticillium wilt, and leaf roll net necrosis Susceptibilities: Moderately susceptibile to blackleg, leafroll virus, and Rhizoctonia scurf. Susceptible to field occurances of seedpiece decay, PVY, PVX, bacterial ring rot, bacterial soft rot, Fusarium dry rot, Pythium leak, pink rot Storability: Russet Nugget stores well late into the shipping season with few problems and negligible sprouting Production Management: Plants emerge quickly. Rangy root system aids in providing adequate water and nutrient uptake for the large vines. Hail damage is generally minimal. Tubers have medium dormancy. Fertility needs are very minimal compared to other major russet cultivars. Excess nitrogen early in the growing season may delay tuber initiation and bulking in favor of excess vine development. Excellent drought tolerance. No major herbicide sensitivities are known. Profuse flowering may result in large numbers of insects being present and psyllid injury is common. Tubers are set near the middle of the hill and spread throughout by harvest For a Cultivar Specific Management Profile send an e-mail request to Dr Susie Thompson-John, Colorado State University at: slvctr@coop.ext.colostate.edu |
 Sangre -
Fresh Potato Attractive, deep red-skinned, multi-purpose fresh market cultivar, with low
specific gravity, smooth oval tubers and white fleshParentage: Viking x A6356-9 Developers: The Colorado and Idaho Agricultural Experimental Stations and USDA Release: 1982 Tuber Shape: Oval Eyes: Shallow and well distributed Skin: Smooth, thick and deep red, slightly netted Flesh: White Plant: Medium and spreading vine, determinate type, lavendar flowers, moderate to shallow concentrated root system Yield Potential: High Specific Gravity: Low Maturity: Medium Resistances: Moderately resistant to leaf roll virus, PVY and tuber early blight,, and highly resistant to leaf roll necrosis, second growth, hollow heart, and blackspot bruise Susceptibilities: Field susceptibilities include foliar early blight, late blight, Verticillium wilt, blackleg, seedpiece decay, common scab and bacterial ring rot. Storage susceptibilities include Fusarium dry rot, bacterial soft rot, Pythium leak, pink rot, silver scurf and Rhizoctonia scurf Storability: Good, with better retention of red skin color than most reds, although it will fade. Dormancy is medium to strong with minmal sprouting Production Management: Emergence is slow, therefore make sure seed is warmed prior to planting. Sangre Selections 10, 11 and 14 have slightly later maturity and higher yield potential. Relatively close seed spacing may optimize yield and desired tuber size. Time to skin set may be up to one week longer than for other cultivars. Nutrient use is similar to Red LaSoda. Drought tolerance is moderate. Sangre is sensitive to metribuzin and post-emergence applications of metolachlor. Tuber set is heavy and somewhat shallow in the hill. For a Cultivar Specific Management Profile send an e-mail request to Dr Susie Thompson-John, Colorado State University at: slvctr@coop.ext.colostate.edu |
 German Butterball -
Fresh Potato A high yielding, very late maturing, specialty cultivar suitable for fresh
use, with medium specific gravity and reduced need for inputs.Parentage: Unknown, Heirloom variety Developers: Unknown, Heirloom variety Release: Unknown, Heirloom variety Tuber Shape: Oval Eyes: Very shallow Skin: Yellow, slightly flaky Flesh: Dark yellow Plant: Very large and prostrate vine, indeterminate type, sparse white flowers, rangy root system, high set of tubers which are found throughout the hill. Yield Potential: High Specific Gravity: Medium Maturity: Very late Resistances: Disease tolerant, as few diseases have been noted under field situations. Susceptibilities: Foliar early blight, blackleg, PVY Storability: German Butterball stores well and long-term storage is possible. Production Management: Plants emerge rapidly. The rangey root system aids in providing adequate water and nutrient uptake for the very large vines. Hail damage is generally minmal. Tubers have medium dormancy. Fertility needs are very minimal compared to most major cultivars and similar to those for Russet Nugget. Excess nitrogen early in the growing season may delay tuberization in favor of excess vine growth. No major herbicide sensitivities are known. tubers are set throughout the hill and tend to bulk late in the season. For a Cultivar Specific Management Profile send an e-mail request to Dr Susie Thompson-John, Colorado State University at: slvctr@coop.ext.colostate.edu |
 Yukon Gold - Fresh
and Processing Potato An attractive, multi-purpose cultivar, medium specific gravity, round to
slightly oval shape with light yellow flesh.Parentage: Norgleam x W5279-4 Developers: Agriculture Canada, Ontario Ministry of Agriculture and the University of Guelph Release: 1980 Tuber Shape: Round to slightly oval and slightly flattened Eyes: Shallow, pale pink in color Skin: Yellow Flesh: Light yellow Plant: Medium-sized, upright vine, determinate type, light red-purple flower, and somewhat compact root system Yield Potential: Medium Specific Gravity: Medium Maturity: Medium-early Resistances: Moderately resistant to mild mosaic Susceptibilities: Moderately susceptible to common scab, PVY, foliar early blight, Fusarium dry rot, silver scurf and Rhizoctonia scurf. Storability: Stores well, may develop Fusarium dry rot if handled roughly. Production Management: Plants emerge quickly, but usually only have 1 to 3 stems per plant, thus high plant density and relatively low nitrogen levels tend to optimize yield of marketable sized tubers. Tuber set is light to medium and high in the hill. Greening may be a probelm without proper hill conformation. Water usage declines as vines mature, thus monitor late season irrigation carefully. Tuber bulking occures early and very rapidly and close monitoring is warranted after 90 days. For a Cultivar Specific Management Profile send an e-mail request to Dr Susie Thompson-John, Colorado State University at: slvctr@coop.ext.colostate.edu |
 Durango Red -
Fresh Potato An attractive, deep red-skinned, multi-purpose tablestock cultivar; with low to medium specific gravity, smooth round to
oval tubers and white flesh.Parentage: Sangre x NDTX9-1068-11R Developers: Colorado Experiment Station Release: 2001 Tuber Shape: Round to slightly oval Eyes: Shallow, more prevalent on the apical end Skin: Smooth, fine netted, very dark red Flesh: White, smooth but not waxy Plant: Small to medium and upright vine, heavily pigmented, determinate type, dark red-purple flowers Yield Potential: Medium to high (+400 cwt./acre) Specific Gravity: Low to medium (1.076 avg.) Maturity: Medium Resistances: Hollow heart, blackspot bruise Susceptibilities: Overall disease problems are minimal. Bacterial ringrot foliar expression is adequate and occurs within 90 days after planting. Bacterial soft rot caused by Erwinia may be a problem in storage and in the field as seed decay and blackleg. Additional susceptibilities of Durango include foliar early blight, PVY and PLRV, although the viruses usually do not present a problem (Durango is similar to Sangre in this regard). Storability: Durango stores well and maintains color in storage. Production Management: Durango sets about 9 tubers per plant on about 2.8 stems. A 9-inch within-row spacing has maximized total yield while maintaining a small tuber size profile, although grade components have had similar percentages at a 12-inch spacing. Due to the small vine, weed competition may be a problem for some producers. Durango has shown some sensitivity to metribuzin. Ultilize about 150 lbs. nitrogen per acre. Stolon detachment problems may result if plants are immature due to excessive nitrogen applications or if maturity is delayed due to warm conditions. Sulfuric acid use for vine kill may be warranted in such situations, to aid in stolon breakdown. Few internal and external defects have been noted. Information provided by Drs. Susie Thompson, Rob Davidson and David Holm. For a Cultivar Specific Management Profile send an e-mail request to Dr Susie Thompson-John, Colorado State University at: slvctr@coop.ext.colostate.edu |
 Fremont Russet- Fresh Potato
A medium yielding, medium-late maturing, fresh market russet cultivar with medium specific gravity, smooth, oblong to long tubers and excellent late season storage capabilities.Parentage: Century Russet x WNC630-2 Developers: Colorado Experiment Station Release: 2001 Tuber Shape: Oblong to long Eyes: Shallow, more prevalent on the apical end Skin: Dark, medium-heavy russet Flesh: White Plant: Medium-sized vine, simialr to Century Russet in color and architecture Yield Potential: Medium (+350 cwt./acre) Specific Gravity: Medium (1.084 avg.) Maturity: Medium to late Resistances: Hollow heart Susceptibilities: Overall disease problems are minimal. Bacterial ringrot foliar expression is adequate and occurs 90 days after planting. Fremont Russet is susceptible to blackleg, softrot seed piece decay, PVY, PLRV, and foliar early blight. Storability: Excellent long-term storage potato Production Management: Fremont Russet utilizes low nitrogen (~140-150 lbs./acre). It is suitable to fill the Centennial Russet niche as a late storage potato and it preforms well in rocky soils. Fremont sets about 7 tubers per hill and averages about 2.5 stems per plant. Space about 12 inches apart to maximize total yield and grade. Wider plant spacings often increases tuber yield, however due to rough and misshapen tubers more culls are also produced. Fremont is moderately susceptible to blackspot bruise and shatter bruise. In trials and grower evaluation, it has exhibited a low incidence of internal and external defects. Enlarged lenticles and alligator hide have been occasionally been noted. Fremont Russet is resistent to metribuzin applications. Information provided by Drs. Susie Thompson, Rob Davidson and David Holm. For a Cultivar Specific Management Profile send an e-mail request to Dr Susie Thompson-John, Colorado State University at: slvctr@coop.ext.colostate.edu |