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Control of Plant Parasitic Nematodes Using Four Different Species of Green Crops

Dr. Mainuddin Ahmed
Chief Scientific Officer
Department of Pest Engagement, BTRI, Srimangal, Moulvibazar

Mohammad Shameem Al Mamun
Scientific Officer
Entomology Division, BTRI, Srimangal, Moulvibazar

Shovon Kumar Paul
Scientific Officer
Entomology Division, BTRI, Srimangal, Moulvibazar

Ashis Ranjan Nath
Scientific Officer
Entomology Division, BTRI, Srimangal, Moulvibazar

Abstract/ Executive Summary:

An experiment was conducted at Bangladesh Tea Research Institute (BTRI) main farm (near nursery) to observe the impact of different species of green crops on nematode population.Result revealed that nematode population in the treatment T₁ (Guatemala) and T₂ (Citronella) were 2.98 and 4.56 respectively which were below the critical level (7.00). Another treatments T₃ (Mimosa indica) and T₄(Calapogonium) were 8.46 and 9.72 respectively which were beyond the critical level.

Keywords: Plant parasitic nematodes, Green crops, Tea soil, Bangladesh

Location: BTRI Manin Farm

Start Date: 01-01-2007

End Date: 31-12-2010

Program Area: Pest Management

Commodity: Tea

Objectives:

To observe the impact of different species of green crops on nematode population as well as the properties of soil of tea plantation in Bangladesh

Methodology:

An experiment was conducted at Bangladesh Tea Research Institute (BTRI) main farm (near nursery) to observe the impact of different species of green crops on nematode population. The experiment was set up in a Randomized Completely Block Design (RCBD) with 4 replications. Four different species of green crops were planted in a plot size of 4.7 x 3.5 m² each. Five treatments were considered such as T₁= Guatemala, T₂= Citronella, T₃= Mimosa indica, T₄=Calapogonium, T₅=Control. Guatemala, Citronella, Mimosa indica and Calapogonium are planted with a spacing of 1m x 0.75m, 0.90m x 0.60m, 1.2m (R-R) and 1.2m (R-R) respectively. The pre-treatment observations were taken before planting of green crops. Lopping was done thrice at 4 months interval per annum for Guatemala and Citronella. Pre-treatment observation for nematode population was done in each plot before planting of green crops. Soil samples are regularly collected randomly by inserting soil sampling auger in to the soil up to 0-9? (23cm) from the respective plot at monthly interval. Soil sample was analyzed in the Entomology Laboratory by Baermann Funnel Method with slight modification. Then nematodes were counted through Stereoscopic microscope.

Source of Information: Annual Report 2010, Tea Journal of Bangladesh 2011, 40: 1-7

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Result revealed that nematode population in the treatment T₁ (Guatemala) and T₂(Citronella) were 2.98 and 4.56 respectively which were below the critical level (7.00). Another treatments T₃(Mimosa indica) and T₄ (Calapogonium) were 8.46 and 9.72 respectively which were beyond the critical level. It is recommended from the findings that Guatemala and Citronella can be used as soil rehabilitation crops to suppress nematode population below critical level in field condition and planters will get nematode free soil or safe soil with less nematodes (<7.00) for establishing tea nursery.

Knowledge Management: Journal, Report/Proceedings