Testing the resistance of potato varieties to common scab

The effect of irrigation strategies during tuber initiation on marketable yield and development of common scab disease of potato in Russet Burbank in Tasmania

“…In this study, we showed a clear benefit for monitoring soil moisture during tuber initiation to schedule irrigation for optimising crop marketable yields. In the first trial, the relative quantity of irrigation supplied during the weeks following tuber initiation appeared important, with greatest net tuber weights in the plots with the greatest irrigation ~ Data are a combined measure of disease incidence and severity (Bjor & Roer, 1980). Different letters following indicate significant difference (P=0.05).…”

“…Different letters following indicate significant difference (P=0.05). ~' Data are a combined measure of disease incidence and severity (Bjor & Roer, 1980). Different letters following indicate significant difference (P=0.05).…”

“…Plants were grown to senescence when tubers from the centre 3.5 metres of the central four rows were sampled from each plot. Tubers were assessed for marketable yield (measure of total tuber weight with commercially acceptable size and shape characteristics) and common scab disease incidence and severity following the rating scales of Bjor & Roer (1980). Treatment data for all trials were compared by ANOVA using the SASS system statistical package and least significant differences calculated where appropriate.…”

Screening potato cultivars for common scab of potato in a naturally infested field

“…The soil was sandy loam, pH 7.2 with nitrogen, phosphorus and potash contents of 340 kg/ha, 18 kg/ha and 210 kg/ha respectively. The experiment was conducted in a randomized block design with plots of 1.5xl m in three replicates, as done by Bjor & Roer (1980). Soil was fertilized with 60 kg N, 80 kg P and 80 kg K, applied before planting and 60 kg N as a top dressing.…”

Determining Specific Window Period for Common Scab Disease Infection in Potato Tubers

“…Common scab lesion severity was assessed using the modified rating scale of Bjor and Roer (1980) as: 0 = no disease; 1 = superficial or slightly raised lesions < 1 mm deep; 2 = lesion >1 mm <2 mm deep; 3 = lesion >2mm <3mm deep; 4 = lesion >4mm deep…”