Sweetpotato black rot caused by Ceratocystis fimbriata.Ceratocystis fimbriata is a fungus and a plant pathogen, attacking such diverse plants as the sweetpotato (black rot) and the tapping panels of the Para rubber tree (moldy rot). Root rotofsweetpotato is induced by soil pathogens that invade through wounds after harvest (Ray and Ravi, 2005). However, there are few studies on the induction of root rot by Fusarium spp. in the soil through wounds ofsweetpotato. Preventing SweetPotato Pox. Soilrotofsweetpotatoes can be prevented with some careful measures and tricks. The easiest way to avoid contaminated soil is through good sanitation practices. Root rotofsweetpotato is induced by soil pathogens. that invade through wounds aer harvest (Ray and Ravi, 2005). However, there are few studies on the induction of root rot. by Fusarium spp. in the soil through wounds ofsweetpotato. Sweetpotato is one word because the crop is distinctly different from potato (Solanum tuberosum) and yam (Dioscorea sp.), which are also grown and marketed in the U.S.A. Production of true yams (sweetpotato is also marketed as yam), however, is negligible. Streptomyces ipomoeae is the causative agent of Streptomyces soilrot on sweetpotato, a disease characterized by extensive necrosis of both adventitious and storage roots. Stem rot, soilrot, black rot, southern root-knot nematode and coffee root-lesion nematode are especially important for their impact on sweetpotatoes.Stem rotofsweetpotato is caused by the soil-borne pathogenic fungi, Fusarium oxysporum f. sp. Resistance ofsweetpotato to bacterial root and stem rot caused by Erwinia chrysanthemi.Effects of temperature and soil moisture at harvest and of delay in curing on keeping quality of Porto Rico sweetpotatoes. Streptomyces soilrot or pox is a widespread and destructive disease ofsweetpotato in the U.S.A. (Clark and Moyer, 1988).An early study of Streptomyces soilrot on sweet-potato indicated a negative correlation between the amount of soil moisture and disease (Poole, 1925). Recent progress in the study of potato, sweetpotato, blueberry and fruit and forest tree diseases is illustrated. The role in potato scab pathogenesis of the newly discovered phytotoxins, thaxtomins, is discussed.Elliott JA (1916) The sweetpotato ‘soilrot’ or ‘pox’, a slime mold disease.
