Evaluación de la productividad de variedades de vainica (Phaseolus vulgaris L.) en Alajuela, Costa Rica.
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Freer V, Alfredo
Araya Villalobos, Rodolfo
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Universidad de Costa Rica
Abstract
En Alajuela, Costa Rica se evaluó del 26 de setiembre al 21 de diciembre de 1986, en variedades comerciales de vainica la forma, la textura de vaina y la producción de vainas, adema s del efecto de la adición de fungicida, en la incidencia de roya (Uromyces phaseoli) y mancha angular (Isariopsis griseola). De 18 variedades evaluadas en un ensayo preliminar, dos presentaron vainas recto-plano-ovaladas no aceptadas en el mercado nacional y ocho presentaron poco vigor vegetativo. Las ocho variedades seleccionadas se sembraron bajo un diseño de bloques completos al azar con cinco repeticiones en parcelas divididas donde la parcela grande fue la variedad y la pequeña, la adición de Fungicidas. Las variedades más productivas fueron Provider y Picker, con 11,69 y 11 ,1611ha, respectivamente. Hubo diferencias en el número de cosechas por variedad; a Extender, Provider y Resisto se les efectuaron cuatro cosecha y a Picker tres cosechas. La cuarta cosecha tuvo poco provecho a nivel de calidad comercial. Hubo baja incidencia de roya y mancha angular.
Commereial varielies of slringbeans were evalualed in Alajuela, Costa Rica from Seplember 26 th to Deeember 21 st, 1986. The evaluated parameters were: shape, pod texture and pod yield and the effect of adding fungicide on the incidence of rust (Uromyces phaseoli) and angular leaf spot (Isariopsis griseola). Two varieties, out of the 18 tested in a preliminary trial, showed straight-flat-oval shaped pods which are rejected by the local market and eight of them showed a low vegetative vigor. The eight selected varieties were planted under a Complete Randomized Block design with split-plots and five replications. The large plot was the variety and the small plot was the addition of fungicide with five replications. The highest producing varieties were Provider and Picker with 11.69 and 11.16 t/ha, respectively. There were differences in the number of pickings per variety. Extender, Provider and Resisto were picked four limes and Picker three times. The forth picking/ was of little benefit, commercial quality - wise. There was a low incidence of rust and angular leaf spot.
Commereial varielies of slringbeans were evalualed in Alajuela, Costa Rica from Seplember 26 th to Deeember 21 st, 1986. The evaluated parameters were: shape, pod texture and pod yield and the effect of adding fungicide on the incidence of rust (Uromyces phaseoli) and angular leaf spot (Isariopsis griseola). Two varieties, out of the 18 tested in a preliminary trial, showed straight-flat-oval shaped pods which are rejected by the local market and eight of them showed a low vegetative vigor. The eight selected varieties were planted under a Complete Randomized Block design with split-plots and five replications. The large plot was the variety and the small plot was the addition of fungicide with five replications. The highest producing varieties were Provider and Picker with 11.69 and 11.16 t/ha, respectively. There were differences in the number of pickings per variety. Extender, Provider and Resisto were picked four limes and Picker three times. The forth picking/ was of little benefit, commercial quality - wise. There was a low incidence of rust and angular leaf spot.