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Control of Foot and Root Rot Disease of Lentil by Using Botanical and Biological Control Agents

K. M. Khalequzzaman
Pulses Research Centre, BARI

M. R. Humauan
Pulses Research Centre, BARI

Abstract/ Executive Summary:

The experiment was conducted at Pulses Research Centre, Ishwardi, Pabna during 2013-14 to find out the effective botanical and bio-control agents to control foot and root rot disease of lentil. Botanicals, biocontrol agents and one control were used as treatments. Foot and root rot disease of lentil varied from 4.13-31.64 %, while the lowest incidence was observed in seed treatment with Henna leaf extract (1.6) and the highest incidence was observed in untreated control. The highest no. of pods/plant (58.20), weight of seeds /plant (1.51g) and yield (1379 kg/ha) were recorded in seed treatment with Henna leaf extract (1.6) and the lowest of these parameters were recorded in untreated control. The radial mycelial growth of Fusarium oxysporum ranged from 0.00-7.33 cm, where the lowest was recorded in Trichoderma harzianum compost (1.6) and the highest was recorded in untreated control. The radial mycelial growth of Sclerotium rolfsii ranged from 1.33-9.00 cm, where the lowest was found in Trichoderma viride liquid (1.6) and the highest was recorded in Allamanda leaf extract (1:6), Neem leaf extract ( 1.6), Jute seed extract (1.6) and untreated control.

Keywords: Botanicals, Bio-control agents, Foot and root rot, Lentil.

Location: Pulses Research Centre, Ishwardi, Pabna

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Pest Management

Commodity: Extract (plant, seed), Diseases, Lentil

Objectives:

The present experiment was undertaken to find out the effective botanicals and bio-control agents to control foot and root rot disease of lentil.

Methodology:

The Laboratory experiment was conducted at the Laboratory, Pulses Pathology Division, Pulses Research Centre, Ishwardi, Pabna during 2013-14. Allamanda leaf extract, Black cumin seed extract, Henna leaf extract, Neem leaf extract, Jute seed extract were prepared in the laboratory. Trichoderma viride and Trichoderma harzianum were collected from NDS, Natore. Fusarium and Sclerotium were treated by the botanicals and biocontrol agents on PDA. Data on mycelial growth at 9 DAI was recorded and analyzed statistically following completely randomized design with three replications. The botanicals and biocontrol agents were also used in the field. Fusarium and sclerotium inoculum were also prepared in the laboratory for applying experimental field. The experiment was conducted at the sick plot, Pulses Research Centre, Ishurdi, Pabna during 2013-14. The experimental land was well ploughed and properly leveled. Weeds and stubbles were removed from the field. The experiment was carried out following Randomized Complete Block Design with three replications. Ten treatments viz. Seed treatment with Allamanda leaf extract (1:6), Seed treatment with Black cumin seed extract (1.6), Seed treatment with Henna leaf extract (1.6), Seed treatment with Neem leaf extract (1.6), Seed treatment with Jute seed extract (1.6), Seed treatment with Trichoderma harzianum compost (1.6), Seed treatment with Trichoderma viride compost (1.6), Seed treatment with Trichoderma harzianum liquid (1.6), Seed treatment with Trichoderma viride liquid (1.6) and one control were used as treatment.The unit plot size was 3.0 m X 1.5 m and plant spacing was 30 cm x 5 cm. The lentil variety was used BARImashur 1. Seeds were sown on November 12, 2013. 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 after counting. Disease plant parts were collected in laboratory for identifying foot and root rot pathogens. The crop was harvested on March 4, 2014. Data were recorded on foot and root rot, plant survival, plant height no. of pods/plant, no. of seeds/plant, 100 seed wt., wt. of seeds/plant and yield. 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 Research Report, Pulses Research Centre, BARI--2013-14

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Foot and root rot of lentil significantly influenced by the botanicals and biocontrol agents. Foot and root rot of lentil varied from 4.13-31.64 %, while the lowest incidence was observed in seed treatment with Henna leaf extract (1.6) and the highest incidence was observed in untreated control. The highest disease reduction over control (86.95%) was recorded from seed treatment with Henna leaf extract (1.6) where the lowest (33.12%) was observed from seed treatment with Jute seed extract (1.6). Number of pods/plant, wt. of seeds/plant and yield were significantly influenced by the botanical and biocontrol agents but not Plant height, No of seeds /pod and 100 seeds weight. The highest no. of pods/plant (58.20), weight of seeds /plant (1.51g) and yield (1379 kg/ha) were recorded in seed treatment with Henna leaf extract (1.6) and the lowest of these parameters were recorded in untreated control. The radial mycelial growth of Fusarium oxysporum ranged from 0.00-7.33 cm, where the lowest was recorded in Trichoderma harzianum compost (1.6) and the highest was recorded in untreated control. The radial mycelial growth of Sclerotium rolfsii ranged from 1.33-9.00 cm, where the lowest was found in Trichoderma viride liquid (1.6) and the highest was recorded in Allamanda leaf extract (1:6), Neem leaf extract ( 1.6), Jute seed extract (1.6) and untreated control.

From the above study, it may be concluded that Henna leaf extract (1.6) showed better performances to reduce foot and root rot disease lentil and increase yield of lentil in field.

Knowledge Management: Report/Proceedings