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Screening of BARI Rhizobium Strains Against Foot and Root Rot of Lentil

K. M. Khalequzzaman
Senior Scientific Officer
RARS, Ishurdi, Pabna

M. R. Humauan
Scientific Officer
RARS, Ishurdi, Pabna

B. Akhter
Scientific Officer
RARS, Ishurdi, Pabna

Abstract/ Executive Summary:

The experiment was conducted at RARS, Ishurdi, Pabna during 2009-10 to find out the effective BARI Rhizobium strains against foot and root rot of lentil. Six different BARI Rhizobium strains were tested for their performance against the disease. All the BARI Rhizobium strains showed significantly better performance over control. Lentil inoculated with BARI Rlc 107 and BARI Rlc 140 before sowing showed minimum incidence of foot and root rot (10.50%) and maximum plant survival (89.50%). Yield ranged from 1.38 – 1.94 t/ha. The highest and lowest yields were recorded in BARI Rlc 107 inoculated plots and untreated control, respectively.

Keywords: Lentil, Foot rot and root rot

Location: RARS, Ishurdi

Start Date:

End Date:

Program Area: Pest Management

Commodity: Lentil

Objectives:

To find out the effective BARI Rhizobium strains against foot and root rot of lentil.

Methodology:

The experiment was conducted at the RARS, Ishurdi, Pabna during 2009-10. The experimental land was well ploughed and properly leveled. Weeds and stubbles were removed from the field. No any chemical fertilizers were applied. BAR Imasur 1 was used in this experiment. The unit plot size was 4.0 m X 2.0 m and plant spacing was 30 cm with continuous sowing for the experiment. The experiment was carried out following Randomized Complete Block Design with three replications. Six BARI Rhizobium strains where BARI Rlc 101, BARI Rlc 104, BARI Rlc 140, BARI Rlc 105, BARI Rlc 107 and BARI Rlc 103 were used. Seeds were inoculated with BARI Rhizobium strains @ 40 g per kg seeds before sowing. Seeds were sown on November 11, 2009. Intercultural operations were done as per needed and to maintain the normal hygienic condition of crop in the field. During the growing period the plots were inspected regularly to record the incidence of foot and root rot disease from seedling to maturity stage of the crop. Dead plants were removed from the field. Disease plant parts were collected in laboratory for identifying foot and root rot pathogens. The crop was harvested on March 5, 2010. Data were recorded on foot and root rot, plant survival, root length, plant height (cm), no. of pods/plant, no. of seeds/plant, wt. of seeds/plant (g) and yield (t/ha). The recorded data were analyzed statistically to find out the level of significance and the variations among the respective data were compared following Duncan’s New Multiple Range Test (DMRT).

Source of Information: Annual Report, Plant Pathology Division 2009-10

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The incidence of foot and root rot ranged from 10.50 – 27.67%, where the highest incidence was recorded in control and the lowest was in BARI Rlc 107 and BARI Rlc 140 inoculated plots. The highest plant survival (89.50%) was obtained from BARI Rlc 107 and BARI Rlc 140 inoculated plots and the lowest (72.33%) was observed in control. BARI Rlc 107 and BARI Rlc 140 showed maximum disease reduction (62.05%) over untreated control. Effect of BARI Rhizobium strains on yield and yield contributing characters of lentil are presented in Table 2. Root length, plant height and wt. of seeds /plant were not statistically significant. The highest number of pods per plant (141.7) was recorded in BARI Rlc 107 which was statistically similar to BARI Rlc 140 (132.0 t/ha) and BARI Rlc 105 (129.8 t/ha) and the lowest was recorded in control. Significantly higher yield (1.94 t/ha) was obtained from BARI Rlc 107 which was statistically similar to BARI Rlc 140 (1.80 t/ha). The lowest yield (1.38 t/ha) was observed in control.

Knowledge Management: Report/Proceedings