Chipeta is a medium- to late-maturing chipping potato released in 1 993 by Colorado StateUniversity (contact the San Luis Valley Research Center for additional information). It is notedfor its excellent chip color during long-term storage. It is also considered a good baker and haswide adaptability among irrigated growing conditions.
Plant/roots Plant emerges quickly; large and erect with many reddish-purple flowers;indeterminate growth habit; deep, spreading root system that helps provide adequate water andnutrient uptake for the large vines.
Tubers are white fleshed, oval to round with white to light tan skin; eyes are shallow and welldistributed; tubers consistently have high specific gravity 1.094.
Yield potential 450 to 500 cwt. range
GROWING SEASON MANAGEMENT
Pre-planting generations Tubers have a medium-long dormancy; both single drop or cutseed is acceptable. Germination tends to be uniform, regardless of eye location on the tuber. Avoid warming seed for more than one week at 60 F prior to cutting, to prevent excessivesprouting. Plant this cultivar 2 to 4 inches deep.
Fertility (soil test basis; lbs/acre)
Apply total fertilizer in the following range: N(l20-140#), P(l00-200#), K(O-60#). Performancein alkali soils is excellent. Pre-plant, Incorporated N should be from 60 to 70#. Early season Napplications may adversely affect the timing of tuberization. Sprinkler applied N should be in60 to 80# range at a rate of 20# per application, no later than mid-August. During periods ofrapid growth, this cultivar may express a mosaic pattern in the leaves not caused by virusinfection.
Irrigation interval at the maximum ET is three days. Drought tolerance is excellent.
Weeds Competition against weeds is excellent with no major herbicide sensitivities known. Insects Standard insect control measures generally are effective.
Fungicides Control of foliar early blight usually is accomplished with one fungicide application,but, sometimes no fungicides are required.
Tuber/bulking Tubers set in the middle of hill but later growth occurs throughout the hill. Rapidbulking occurs mid to late season. Tubers are resistant to hollow heart and second growth,butonly moderately resistant to blackspot and shatter bruise.
Vine kill Average days from planting to vine kill are 1 1 5 to 1 20. Vine killing is requiredduring most years and can be achieved relatively easily if mature. Excessive N can delaymaturity and make vine kill difficult. Adequate skin set occurs within 1 4 to 21 days. Monitoring of tuber size is necessary after mid-August to avoid excessive oversize.
Chipeta is considered an above-average storage chipper. It maintains good chipping quality andgenerally has few sprouting problems. If it is stored for chips (vs seed), a temperature of near 50F is required,
Overall disease problems are minimal. Bacterial ring rot foliar symptom expression usuallyoccurs about 65 to 70 days after planting. Excessive early N applications may delay typicalleafroll symptoms.
Foliar early blight Moderately Resistant
Verticillium wilt Moderately Resistant
Seedpiece decay Susceptible
Leafroll virus Susceptible
Leafroll Net necrosis Resistant
Common Scab Susceptible
Bacterial ring rot Susceptible
Tuber early blight Moderately Resistant
Bacterial soft rot Susceptible
Fusarium dry rot Susceptible
Leak (Pythium) Susceptible
Pink rot (Phytophthora) Susceptible
Silver scurf Unknown
Rhizoctonia scurf Moderate
Disease reaction ratings susceptible, moderately susceptible, moderate, moderately resistantand resistant.