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Screening of Composts and Biochars Against Root-knot Nematode Meloidogyne Incognita of Tomato

MD. IQBAL FARUK
PSO
Plant Pathology Division, BARI, Gazipur

Abstract/ Executive Summary:

The experiment was conducted in the pot-house of Plant Pathology Division, BARI to observe the efficacy of three compost viz. Tricho-compost, vermin-compost and organic compost and three biochar viz. biochar-1, biochar-2 and biochar-3 against root-knot nematode of tomato caused by Meloidogyne incognita. Root-knot nematode infested pot soils were treated with those composts and biochars as well as chemical nematicide Furadan 5G. The present study revealed that soil amendment with Tricho-compost, vermicompost, organic compost, biochar-1, biochar-2 and biochar-3 gave an appreciable reduction of gall development on roots of tomato caused by root-knot nematode M. incognita and increased plant growth parameters such as shoot and root growth of tomato. Among the treatments, soil amendment with Tricho-compost appeared to be the best-amended materials for reduction of root-knot nematode disease incidence and improvement of plant growth. Soil amendments with vermicompost, organic compost, biochar-1, biochar-2 and biochar-3 also appeared better treatment for the reduction of root-knot nematode disease incidence and improvement of plant growth of tomato compared to control and chemical nematicide Furadan 5G.

Keywords: Tomato, Meloidogyne incognita,Composts, Biochar, Nematode

Location: An experiment was conducted in the pot-house of Plant Pathology Division, BARI, Joydebpur, Gazipur

Start Date: 00-00-2019

End Date: 00-00-2020

Program Area: Pest Management

Commodity: Nematodes, Tomato

Objectives:

The present study was undertaken with the objective of investigating the effect of biochars and organic compost on root-knot nematode infestation of tomato

Methodology:

An experiment was conducted in the pot-house of Plant Pathology Division, BARI, Joydebpur, Gazipur during 2019-20. There were 8 treatments viz. (i) Furadan 5 G @ 5 g/kg soil (ii) soil amendment with organic compost @ 100 g/kg soil (iii) soil amendment with vermin-compost @ 100 g/kg soil (iv) soil amendment with Tricho-compost @ 5% (w/w) soil (v) soil amendment with biochar-1 @ 5% (w/w) soil (vi) soil amendment with biochar-2 @ 5% (w/w) soil (vii) soil amendment with biochar-3 @ 5% (w/w) soil and (viii) control. CRD design was followed with 5 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 the cow dung based composting materials which called Trico-compost. Commercially available organic and vermin compost were collected from the company. Biochar-1 was collected from Soil Science Division, BARI. Biochar-2 and biochar-3 were collected from the company. To ensure inocula of the nematode, chopped severely galled tomato roots infected with M. incognita were mixed with soil @ 5 g/kg soil. Organic compost, vermin-compost, Tricho-compost and biochars were added to the pot soil 7 days before seedling transplanting. In the case of chemical treatment, Furadan 5G was added to the pot soil at the time of seedling transplanting. Twenty-five days old and apparently tomato seedlings of variety Bari Tomato-15 were transplanted in the pot and each pot received 5 seedlings. During crop season necessary weeding, irrigation and other intercultural operations were done as per the recommendation of the crop. Data were collected 80 days after seedling transplanting. All the plants from the pot were carefully uprooted and the root systems were cleaned with running tap water. Data on shoot height, shoot weight, root length and root weight were recorded. The severity of root gall was recorded in terms of gall index based on a 0-10 scale (Zeck, 1971). Data were analyzed statistically by using the MSTATC program. The treatment effects were compared following the least significant difference (LSD) test (P=0.05).

Source of Information: Annual Research Report 2019-20, Plant Pathology Division, BARI, Gazipur

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From this, it may be concluded that soil amendment with three compost viz. Tricho-compost, vermin-compost and organic compost and three biochar viz. biochar-1, biochar-2 and biochar-3 are effective for reducing root nematode disease and enhanced plant growth parameters such as shoot and root growth of tomato. This is a first-year experiment so further study is needed for confirmation of the results.

Knowledge Management: Report/Proceedings