s:649:"TI Upland rice cultivars for improved acid upland rice-based farming systems 
AU Tion M 
AU Garrity, D.P. 
AU Mercado Jr A R 
AB Baseline surveys at IRRI’s key research site for acid upland rice-based farming systems in Claveria, Mindanao, indicated that upland rice-based patterns were less widespread than maize-based patterns. This was attributed to a number of unique constraints associated with upland rice production, including late-maturing cultivars that prevented production of a succeeding crop. Cultivar evaluations of elite upland rice breeding materials were conducted to identify promising cultivars adapted to the acidic (pH  
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