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Management of Foot and Root Rot Disease of Lentil Through Soil Amendment with Tricho-compost

Md. Iqbal Faruk
Plant Pathology Division, BARI

Md. Abdur Rahman
Plant Pathology Division, BARI

Abstract/ Executive Summary:

The experiment was conducted to observe the effect of Trichoderma harzianum against foot and root rot disease of lentil caused by Sclerotium rolsfii and Fusarium oxysporum at BARI, Gazipur during 2013-14. Soil amendment with Tricho-compost is considered to be the best treatments in reducing seedling mortality and in increasing yield of lentil. Seed treatment with chemical fungicide such as Provax also showed better performance against the disease and its effect found at per with the seed treatment of Trichoderma spores suspension in reducing seedling mortality and increasing yield of lentil.

Keywords: Foot rot, Root rot, Lentil, Soil amendment, Tricho-compost

Location: Bangladesh Agricultural Research Institute, Joydebpur, Gazipur

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Pest Management

Commodity: Diseases, Lentil

Objectives:

The present research was under taken to find out the effective formulation of T. harzianum against foot and root rot disease of lentil.

Methodology:

The experiment was conducted in the field of Plant Pathology Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur. There were 6 treatments viz. (i) Seed treatment with Provax (ii) Seed treatment with Trichoderma spore suspension-1 (iii) Seed treatment with Trichoderma spore suspension-2 (iv) Soil amendment with Tricho-compost-1 and (v) Soil amendment with Tricho-compost-2 and (vi) Untreated control. The unit plot size was 2.5 m x 3m. RCB design was followed with 3 replications. T. harzianum was multiplied in the mixture of Grasspea and wheat bran with mustard oilcake substrates. The formulated Trichoderma was used to mass multiplication in two different cow dung based compost designated Trico-compost-1 and Trico-compost-2. T. harzianum were cultured in PDA and PBD media and spores were harvested 10 days old cultured and were used for seed treatments. The soil was inoculated with S. rolfsii and F. oxysporum colonized substrates @ 100g/m² soil before seed sowing. Tricho-composts were added @ 3 t/ha after inoculation with pathogens. Seeds were treated with Provax @ 2.5 g/kg seeds before seed sowing. BARI Masur-5 was used in this study. Data were collected on seedling mortality; shoot height, shoot weight, root length and root weight. The yield of lentil was also recorded. Data were analyzed by MSTATC program. Means were computed by Duncun’s New Multiple Range Test (DMRT).

Source of Information: Annual Research Report, Plant Pathology Division, BARI--2013-14

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Significant difference was observed among the treatments. Soil amendment with Tricho-composts gave the higher shoot height, shoot weight, root length and root weight followed by seed treatment with Trichoderma inocula and Provax compared to control. The highest seedling mortality 23.33% was found in control treatment. The highest number of diseased plant 5.00/plot was recorded from the control treatment where it was significantly lower in the treated plot. Soil amendment with Tricho-compost- gave the lower seedling mortality 5.00% followed by soil amendment with Tricho-compost-2 and seed treatments with Provax, where seedling mortality was 5.33%, 5.67% but significant differences among the treatments was not observed. Seed treatments with Trichoderma spores suspension was also found significantly lower seedling mortality with 10.33% and 11.67% compared to control. Soil amendment with Tricho-compost-1 and 2 gave higher yield of lentil at 1827 and 1936 kg/ha, respectively followed by seed treatment with Provax and Trichoderma inocula-1 and 2 where the yield was 1615, 1506 and 1282 kg/ha, respectively. The lowest yield of lentil 962 kg/ha was recorded from the control treatment. Yield was higher 50.31% compared to control due to application of Tricho-compost-2 where as it was 40.43% due to seed treatment with Provax. Soil amendments with Tricho-compost-1 gave higher yield 47.35% where it was 36.12% and 24.96% by seed treatments with Trichoderma inocula-1 and 2, respectively compared to control. From this study it is observed that soil amendment with Tricho-compost is to be the best treatments for reducing seedling mortality and increasing plant growth and yield of lentil. Seed treatment with Provax also better treatment for management of foot & root rot disease of lentil. Seed treatment with Trichoderma spores suspension was the less effective compared to Tricho-compost

Knowledge Management: Report/Proceedings