AbstractFifty-five cassava cultivars (Manihot esculenta, Crantz) were evaluated for 3 consecutive years in a Coto clay (Oxisol) in northwestern Puerto Rico. The highest yielders, averaged over 3 years, were PI 12902, Jamaica 18, PI 9570 and PI 12003 with 34,345, 29,906, 26,845 and 24,684 kg/ha, respectively. The organoleptic evaluation reveals that all but PI 12903 were found to be acceptable. The hydrocyanic acid content among cultivars was below the moderately toxic levels, (50 p/m). These results are in line with previous work conducted in east central Puerto Rico.
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