Tylenchorhynchus brevilineatus

Tylenchorhynchus brevilineatus	Contents	Rev 04/03/2021
Stunt Nematode	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Tylenchorhynchus Menu	Economic Importance	Damage
	Distribution	Management
Return to Telotylenchidae Menu	Feeding	References
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Classification:

Rhabditida Tylenchina Tylenchoidea
Telotylenchidae
Telotylenchinae

Tylenchorhynchus brevilineatus Williams, 1960

Stunt Nematode

Morphology and Anatomy:

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

. A severe nematode disease of groundnut, popularly called 'Kalahasti malady', caused by the nematode Tylenchorhynchus brevilineatus, has been prevalent since 1976 in parts of Andhra Pradesh State, India (Mehan, et al. 1993).

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Feeding:

Ectoparasite on epidermal cells between root hairs in zone of elongation.

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Hosts:

Groundnut (peanut)

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

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Damage:

Loss of yield.

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Management:

Resistance: Fourteen of 1599 genotypes tested were identified to have stable resistance. Most of the resistant genotypes have undesirable pod/seed characteristics, but one is a high-yielding breeding line (TCG 1518) which is being released for use in Andhra Pradesh State, India (Mehan, et al. 1993).

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

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

Organic Amendments: poultry manure (50 q ha-1), farmyard manure (100 q ha-1) and saw dust (25 q ha-1) reduced population levels of T. brevilineatus and disease severity, and in increasing groundnut yield over non-amended control plots. Greatest nematode control (33.5%) and highest increase in pod yields (50.3%) were obtained in poultry manure amendment followed by neem cake (10 q ha-1). The increase in yield was related to the decrease in nematode population. Application of poultry manure was highly economical with benefit:cost ratio of 8.7 followed by farmyard manure with 3.6 (Naidu et al, 2000a).

Crop Rotation: Tagetes erecta was a poor host for T. brevilineatus. As a rotation crop, it reduced nematode populations in soil and pod disease severity and increased groundnut pod yield. Mustard also significantly increased pod yield (Naidu et al, 2000b).

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References:

Mehan, V. K., D.D.R. Reddy, and D. McDonald.. 1993.  Resistance in groundnut genotypes to Kalahasti malady caused by the stunt nematode, Tylenchorhynchus brevilineatus. International Journal of Pest Management 39: 201-203.
Naidu, P. H., G. J. Mosas and K.Sitaramaiah. 2000a.  Control of groundnut Kalahasti malady (Tylenchorhynchus brevilineatus) through organic and inorganic soil amendments. Journal of Mycology and Plant Pathology 30:180-183.
Naidu, P. H., G. J. Mosas and D.D.R. Reddy. 2000b.  Influence of intercropping on Kalahasti malady (Tylenchorhynchus brevilineatus) in groundnut. Journal of Mycology and Plant Pathology 30:207-209.