This paper focuses on the nematode parasites of cassava (Manihot esculenta), yams (Dioscorea spp.), taro (Colocasia esculenta), tannia (Xanthosoma spp.), giant taros (Alocasia spp.), swamp taro (Cyrtosperma chamissonis), Chinese water chestnut (Eleocharis dulcis), oca (Oxalis tuberosa), olluco (Ullucus tuberosus), arracacha (Arracacia xanthorrhiza) and mashua (Tropaeolum tuberosum), particularly their biology and life cycle, symptoms of damage, survival and spread, economic importance, and management measures (cultural, biological, chemical, physical and integrated control methods, and pest resistance).

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The sources and genetics of resistance to the yam nematode, S. bradys, are discussed. A method for screening for yam nematode resistance is also presented.

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