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Rice In Sri Lanka - Rice Diseases
Root knot
Species of the nematode Meloidogyne cause root knot.The nematode becomes inactive after prolonged flooding.
Symptoms
- The disease symptoms include enlargement of the roots and the formation of galls or knots.
- The swollen female nematode can be found in the center of this tissue.
- Plants are dwarfed, yellow, and lack vigor
Control measures
Deep ploughing and application of organic matter help reduce the disease condition.
![](https://doa.gov.lk/wp-content/uploads/2020/06/RRDi_RootKnot.jpg)