1.

Project Code

:

-

2.

Title

:

Studies on the management of root knot nematode,Meloidogyne incognitain mulberry

3.

Investigators

:

Sukumar J,Padma SD,Prasad KV,Bongale UD

4.

Project period

:

1993 - 1997

5.

Institute/ University

:

Karnataka State Sericulture Research and Development Institute, Bangalore, Karnataka

6.

Project cost

:

-

7.

Objectives

• To screen mulberry varieties for resistance to root knot nematodes.
  • To estimate yield loss due to nematode population.
  • To study the interaction between root knot nematode, stem canker and root rot diseases.
  • To evolve suitable disease management methods

8.

Important findings

Advocated to plant nematode free saplings to prevent the spread of nematodes to disease free areas, removal of alternate hosts such as weeds from mulberry gardens to reduce the population build-up and to increase the vigor of plants.

Pre-treat the roots of saplings with 100 ppm Carbofuran by root dip for 30 minutes prior to planting to kill nematodes within the root system. Keep heavily infested soils free of vegetation to kill the nematodes and eggs by solarization.

Significant reduction in disease intensity with increased leaf yields can be obtained through organic amendments with FYM or integrating FYM+ neem cake + Marigold. Soil amendments with 40 tons of FYM in two equal split doses can reduce disease significantly comparable to application of Carbofuran. In addition, 19% increase in leaf yield can also be obtained. Alternately, application of 20 tons of FYM with one ton of neem cake and Marigold intercropping can also control the disease with 13% increase in leaf yield. In gardens where disease intensity is very high, Carbofuran @ 2 kg/ha can be applied for fast reduction in disease intensity which can be maintained subsequently by soil amendments with 40 tons FYM or FYM + neem cake + Marigold.