Ditylenchus angustus

Ditylenchus angustus	Contents	Rev 11/19/2019
Rice Stem Nematode	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Ditylenchus Menu	Economic Importance	Damage
	Distribution	Management
Return to Anguinidae Menu	Feeding	References
	Go to Nemaplex Main Menu	Go to Dictionary of Terminology

Classification:

      Tylenchida
       Tylenchina
        Tylenchoidea
         Anguinidae

                    Ditylenchus angustus

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Morphology and Anatomy:

Nematode is 0.8-1.2 mm long.

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

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Distribution:

India, Egypt, Madagascar.

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Economic Importance:

Nematode causes "Ufra" disease of rice.

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Feeding:

Nematode is found in terminal buds a few days after rice seedlings are transplanted.

Feeds ectoparasitically on newly formed bud tissues.

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Hosts:

Rice.

For an extensive host range list for this species, click

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Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click	If species level data are not available, click for genus level parameters

Nematode is spread through irrigation water.

Can remain dormant and resist desiccation until fields are flooded.

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Damage:

Host tissues may become malformed, stunted, wilted; leaf sheaths are distorted; flowers are sterile; upper nodes show lesions.

Grain yield may be reduced by 50% or more.

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Management:

Phytosanitary methods, burn rice stubble.

Nematicide Dazomet shows promise in some tests.

Host Plant Resistance, Non-hosts and Crop Rotation alternatives:

For plants reported to have some level of resistance to this species, click