Milton Workman

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Ute Russet is an oblong, smooth, fresh market potato with a dark net. It emerges slowly, produces an erect, medium sized vine, and is late maturing. Ute Russet is resistant toSclerotium rolfsii Sacc, and leafroll net necrosis, and moderately resistant toVerticillium wilt and scab. Its total and U.S. No. 1 yield potential is comparable to Centennial Russet(More)
Russet Burbank and WC230-14 potato tubers were stored at 0 C (32 F) and 5 C (41 F) in air, air plus 4% CO2 and air plus 8% CO2 for a 175 day storage period. Four times during this period, tubers were removed and inoculated withErwinia carotovora var.atroseptica (van Hall) Dye orFusarium roseum var.sambucinum (L. K.) Sn. and H. and stored at 17 C (62.6 F).(More)
Throughout a 7-month storage period, Russet Burbank tubers continuously ventilated at 32 F (0 C) and 45 F (7.2 C) with atmospheres of 2% O2, air, 4% CO2, and intermittently ventilated with air, evolved ethylene at a rate no greater than 0.008 μ 1 Kg−1 hr−1. Tubers stored in 80% O2 and 12% CO2 produced ethylene at much higher rates. In all cases where(More)
The response of four potato cultivars to various temperatures was evaluated in respect to respiration, sugar and phenolic content, and ion leakage from cut tissue sections. Respiration decreased with decreasing temperature from 20° to 0°C but after 24 hours at 0°C began to increase and reached a maximum after 10 days at 0°C, then drifted downward. No(More)
Tubers of 11 potato clones were compared for susceptibility to blackspot and soft rot, redox potential, ascorbic acid, dry matter, and potassium content. Evaluations were made before and after 6 mo storage at 3.9C. Clonal behavior was generally consistent over 2 yr. Significant differences occurred among clones for each factor except redox potential.(More)
Sangre is a medium maturing, high quality, fresh market red potato adapted to irrigated areas of the West. Tubers are deep red, oval to oblong, shallow-eyed and have a thick skin. Baking and boiling quality is excellent. Sangre is slow emerging and produces a medium size vine. It is susceptible to early and late blights, Verticillium, moderately susceptible(More)
Two fields in Weld County, Colorado were fumigated in the fall or spring with Telone C in an attempt to restore their productivity. The soils were Julesburg sandy loams and had been cropped to either corn or potatoes for many years. Observations were made over three years on the following: soil ammonium and nitrate nitrogen carry over, seasonal changes in(More)
Kennebec seed potatoes were stored in various atmospheres of O2 and CO2 at 32 and 41 F (0 and 5 C). Samples were removed every 6 weeks for measurement of bud and parenchyma tissue respiration, rate of ion loss from tissue sections and reducing sugar content. Potatoes remaining at the end of the storage period were warmed, cut and planted immediately in a(More)
Oromonte is a chipping potato which has produced very well in Colorado. It has consistently exceeded Kennebec in specific gravity and chip color. It is resistant to potato virus Y and to internal discoloration caused by Fusarium oxysporum f. tuberosi. It is more resistant to storage diseases and mechanical harvesting injury than Kennebec. Oromonte es una(More)
Pre-harvest propane burning of vines and soil surface significantly reduced populations ofAlternaria solani spores on the soil surface in field studies. Infection of potato tubers harvested from burned fields was reduced in most cases. Laboratory studies indicated a minimum temperature of 200°C for 1–2 seconds was required to significantly (P = 0.05) reduce(More)