Was proposed as main objective, evaluate and select lines and varieties of rice coa good agronomic characteristics, high yield potential and good milling quality. Under a completely randomized block design with four replications, they were evaluated 05 promising lines and 04 commercial varieties; all from the experimental station "El Porvenir" Juan Guerra-Tarapoto. The experiment was conducted under conditions of tropical rain forest, in the village of Qtúnayac district of Yurimaguas, Province of Alto Amazonas, Loreto Department; loe between 5 ° 59 '17 "south latitude and 76 ° 10' 26" west longitude 177 HLS.ILm. Planting seedbed for all study components (lines and varieties), was held on February 5, 1999 (in seedbeds pools); pure transplant the same was held on 07 and 08 March at 0.25 m spacings. by 0.25 between strokes. The final field fertilization was performed with a dose of 90 kg...