GROWTH AND FRESH POD YIELD OF THREE POLE SNAP BEAN (Phaseolus vulgaris L.) VARIETIES GROWN ORGANICALLY IN THREE LOCATIONS IN BENGUET, PHILIPPINES

Nobel G. Tayan, Leoncia L. Tandang and Margie S. Espie

Abstract

Productive of organic foods is one of the challenges in crop production. However, it is limited due to lack of suitable varieties. To meet local demands pole snap beans (Phaseolus vulgaris L), the researchers continuously select varieties for organic production in different locations. In this study, three varieties of pole snap beans such as Kapangan. Tublay variety and Patig that were selected in previous studies were tested in three locations particularly La Trinidad. Kibungan and Tublay where the crop is grown in commercial scale. The study was conducted from November 2013 to March 2014 to determine the best variety and location; determine the interaction effect of variety and location on growth and yield: and determine the profitability of growing pole snap beans in organic farming systems.

There was significant difference on plant survival in the different locations and the interaction effect between variety and location was also significant. The highest was Patig (89.17 that is comparable with Kapangan 89.17 %) both grown in Tublay. There were no significant differences on the number of days from emergence to last harvest pods among the varieties and across locations. Kapangan is also highly resistant on bean rust together with Tublay variety in Kibungan and TUblay but mild in resistance in La Trinidad. Patig was susceptible to mild resistant to bean rust.

There were significant differences on marketable yield among varieties but not across locations. The highest number and weight of marketable pods was harvested from Kapangan (2.441 pods and 16.38 t/ha) and Tublay variety (2.179 pods and 14.32 and t/ha). Patig produced the least (1.640 pods and 10.80 t/ha). Based on G x E analysis, Kapangan and Tublay variety surpassed the grand mean (13.84 t/ha; and among locations, the highest was in Tublay (17.52t/ha). However, none of the varieties were found stable. The farmers liked very much the fresh pods from all the varieties that were planted in their locality. The highest return on cash expense (146.94%) was in Tublay.

Kapangan and Tublay varieties are recommended for the productions of fresh pods. It is highest yielding variety and profitable to grow in the three test locations. Growing Kapangan, Tublay variety and Patig pole snap bean in Tublay (1,400 m asl) is recommended based on productivity and profitability under organic production.

Keywords: pole snap bean, organic production, highland farming