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TERMS AND CONCEPTS USED IN PLANT PATHOLOGY
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CLASSIFICATION OF FUNGICIDES BASED ON CHEMICAL NATURE
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CLASSIFICATION OF FUNGICIDES BASED ON METHOD OF APPLICATION
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Learn introduction to plant pathology with Braimy – B.sc Agriculture
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Several nematodes act as vectors for transmission of fungi, bacteria and viruses.

Bacterial diseases:

  • The bacterium which causes yellow ear rot of wheat (Corynebacterium tritici or Clavibacter tritici) is disseminated by ear cockle nematode, Anguina tritici.

Ear Rot - an overview | ScienceDirect Topics

Fig: Yellow ear rot of wheat

Ear cockle of wheat

Fig: Anguina tritici

  • If these two diseases appear together, a complex disease called tundu of wheat occurs.

Ear Cockle Disease Of Wheat - AgriHunt - A Hunt for Agricultural Knowledge

Fig: Ear Cockle Disease Of Wheat

  • Corynebacterium tritici is not capable of dispersal and infection unless it is carried by Anguina tritici.

Fungal diseases:

Similarly, root rot and wilt pathogens such as Phytophthora, Fusarium, Rhizoctonia, Verticillium, etc., are disseminated by nematodes.

Viral diseases:

  • Many soil borne viruses are known to be transmitted by the nematodes.
  • Xiphenema, Longidorous, Trichodorus and Paratrichodorus are the nematode genera belonging to Dorylaimoidea which are known to transmit plant viruses.


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