Blazer Russet( A 8893-1)

Description
Tuber Shape Oblong to long
Eyes Shallow evenly distributed eyes
Skin Smooth medium russet
Flesh White
Plant Large sized upright vine with few white flowers

Another Guide in pdf format from PVMI is located here.

Released in 2005, Blazer Russet is an early-maturing, dual-purpose variety that works well for processing even out of cold storage and its attractive appearance and excellent culinary qualities also make it a good candidate for fresh pack. Blazer Russet is resistant to tuber external defects, sugar ends, common and powdery scab of the tuber, and PVX. It is moderately resistant to blackspot bruise and tuber late blight. Blazer Russet has moderate susceptibility to hollow heart. Blazer also has excellent resistence to drought and does better under slight under irrigation.



Plant/root Plants emerge quickly and produce a vine that is large and erect. A deep spreading root system helps provide adequate water and nutrient uptake for the large vines. Hail damage generally is minimal.

Tubers have white flesh and are oblong to long with a light russet skin. Eyes are shallow and well distributed. A high percentage of tubers have an attractive long-type shape.

Yield potential 500 cwt. range with a high percentage of No. l's.

GROWING SEASON MANAGEMENT

Pre-planting considerations Tubers have a medium dormancy; either single drop or cut seed is acceptable. Germination tends to be uniform, regardless of eye location on the tuber. When cutting seed apply appropiate fungicides as blazers are susceptible to fusarium dry rot. Plant this cultivar 2 to 4 inches deep.

Fertility (soil test basis; lbs/acre)

Apply total fertilizer in the following range: N(200-220#), P(80-190#), K(0-200#). Performance in alkaline soils is good. Pre-plant incorporated N should be 90 to 110#. Save the rest of the fertilizer till plants tuberize and don't cut off the nitrogen too early or plants could die early. Sprinkler applied N should be 20 - 60# applied at a rate of 20# per application, into early August. Late fertilizer does not affect skin set significantly. Petiole sufficiency levels are similato Russet Burbank.

Irrigation Irrigation interval at the maximum ET is 2.5 to 3 days. Drought tolerance is excellent. Late season be very careful not to overwater them or they may die early.

Pest Control

Weeds Competition against weeds is excellent with no major herbicide sensitivities known. Insects Standard insect control measures generally are effective, but must be applied in a timely manner.

Fungicides Control of foliar early blight usually is accomplished with three fungicide applications, Early blight tolerance is good.

Tuber/bulking Tubers set in the middle of the hill and spread throughout by the end of the season. Tubers can set deep. Plant sets an average of 9 to 11 tubers/plant. Tuber bulking occurs evenly thoughout the later part of the season.. Tubers are resistant to hollow heart, secondary growth, and growth cracks. Tubers are sensitive to shatter bruise so care should be taken during harvest. An oxidizer appliedd to the tubers at harvest can help prevent fusarium dry rot in the tubers.

Vine kill Average days from planting to vine kill are 90 - 100. Vine killing is required. Good skin set occurs within 14 to 21 days.

STORAGE MANAGEMENT

Blazer Russet stores well with few problems and sprouting is negligible.

DISEASE REACTION

Overall disease problems are minimal. Bacterial ring rot foliar symptom expression occurs within 90 days after planting.

Field Storage
Foliar early blight: Moderately Resistant Tuber early blight Resistant
Verticillium wilt: Susceptible Bacterial soft rot Moderately Susceptible
Blackleg Moderately Susceptible Fusarium dry rot Susceptible
Seedpiece decay Moderate Leak (Pythium) Moderately Resistant
Leafroll virus Resistant Pink rot (Phytophthora) Moderately Resistant
Leafroll Net necrosis Susceptible Silver scurf Unknown
PVY, PVX Resistant Rhizoctonia scurf Moderately Resistant
Bacterial ring rot Susceptible Corky Ringspot Moderate
Common Scab very Resistant Powdery scab resistant

Disease reaction ratings susceptible, moderately susceptible, moderate, moderately resistant andresistant,