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B Inoculation Trials on Tubers
Factors Influencing Tuber Infection with
acid amount of inoculum aoid aqueous suspension breeding program cent chlorogenic acid Cornell University determined dilution disease rating factors ferric chloride field conditions field exposure plots field exposure trials field plots field tests field-grown tuber foliage greenhouse and field greenhouse conditions greenhouse method greenhouse tests growth Hooker infected tubers infection results obtained Infesting the potting Inoculation inoculum prior inoculum was added isolates lesion type method of testing Methods and Materials mixed mixture infested normal potting soil number of colonies observed pathogen periderm test petri plates plants grown plants judged plants were grown potato scab potato seedlings potting medium prior to planting produced from true reaction resistance to scab scab lesions scab organism scab rating scab resistance scabies Schaal seedling plants seedlings grown soil mixture soil types spore Streptomyces susceptible plants suspension of inoculum teats temperature Thaxt treatment true seed tubers produced tubers were harvested vermiculite water-holding capacity