Marketable Yield and Quality of Yukon Gold Potatoes in Response to Organic Seed Treatments and Varied Interval Irrigation Schedules
Under ideal conditions, organic potato growers have thin margins for profits, so preventing disease is of utmost importance to this billion-dollar industry. Significant economic losses are caused by a soil-borne disease called common scab that creates superficial pitted-lesions on the skin of potatoes. Although yields are not typically reduced by scab, marketability is significantly diminished in tuber cultivars not being used for processing. Yukon Golds are sold as table stock so esthetics is vital for consumer confidence (II). This variety is particularly susceptible to several strains of Streptomyces that cause scab because of their delicate flesh. Since, potatoes can tolerate acidic soils and scab cannot, organic farmers will exploit these characteristics by maintaining the soil pH in the (4.5 to 6.0) range. However, lowering the soil pH is expensive, reduces yields, may not be effective, and is detrimental to the health of the soil which can lead to dustbowl conditions (V). While
Marketable Yield and Quality of Yukon Go
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