PERFORMANCE OF SOME COUNTRY BEAN VARIETIES AGAINST POD BORER,MARUCA VITRATA FAB.IN SUMMER

Abstract

The experiment was conducted at the experimental farm of Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh during April 2011 to November 2011 to evaluate the performance of some country bean varieties against the attack of pod borer in summer. The study was comprised of five varieties; IPSA seam-1, IPSA seam-2, IPSA seam-3, BARI seem-3 and Goalgada. From the present study it was observed that the BARI seem-3 variety of country bean gave the highest result. The variety BARI seem-3 showed highest (14.67 ton ha-1) total yield among the different varieties of country bean used in the present study. This variety (BARI seem-3) performed best results in increasing number of healthy flower for 5 inflorescences (11.00), lowest number of infested flower for 5 inflorescences (0.6667), lowest flower drops (4.333), highest total number of pods (127.3 pods plot-1), increasing number of healthy pods (119.0 pods plot-1), increased rate of length (14.83 cm) and girth (6.867 cm) of 5 healthy pods, highest total weight of healthy pods (758.3 g), lowest number of infested pods (8.333 pods plot-1),increased rate of length (10.90 cm) and girth (6.033 cm) of 5 infested pods, highest total weight of infested pods (93.67 g) over the other varieties. The variety IPSA seam-1 showed the least performance regarding all the parameters. Whereas, IPSA seam-3 variety gave the second best performance regarding the above parameters including the second highest yield (10.67 ton ha-1).