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Plant and Soil

, Volume 143, Issue 1, pp 133–139 | Cite as

Role of Scutellonema clathricaudatum in etiology of groundnut growth variability in Niger

  • S. B. Sharma
  • F. Waliyar
  • P. Subrahmanyam
  • B. J. Ndunguru
Article

Abstract

Variation in crop growth is an important limiting factor for groundnut production in Niger. Populations of Aphelenchoides sp., Ditylenchus sp., Helicotylenchus sp., Hoplolaimus pararobustus, Macroposthonia curvata, Paralongidorus bullatus, Scutellonema clathricaudatum, Telotylenchus indicus and Xiphinema parasetariae have been associated with groundnut crop growth variability. S. clathricaudatum, X. parasetariae and T. indicus were widespread and S. clathricaudatum was most abundant nematode. Population densities of S. clathricaudatum was always higher in the roots of poorly growing, chlorotic and stunted plants than in the roots of apparently healthy plants. A preplant population density of 1.3 S. clathricaudatum cm-3 soil caused (p=0.05) reduction in plant growth of groundnut cv. 55–437. S. clathricaudatum was mainly confined to 0–15 cm soil depth at the time of planting in June and was not found below 45 cm depth at any time during the crop growth period. Soil application of carbofuran (10 kg a.i ha-1) reduced the nematode population densities and resulted in vigorous and uniform crop growth. Higher Al and H-ion concentrations (0.50 meq 100 g-1 soil) also was associated with poorly growing chlorotic seedlings. Symptoms of nematode-caused variable growth were evident 3 to 4 weeks after seedling emergence.

Key words

aluminium toxicity Arachis hypogaea crop growth variability groundnut peanut pesticide plant-parasitic nematodes Niger Sahel Scutellonema clathricaudatum soil pH 

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Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • S. B. Sharma
    • 1
  • F. Waliyar
    • 2
  • P. Subrahmanyam
    • 1
  • B. J. Ndunguru
    • 2
  1. 1.Legumes ProgramInternational Crops Research Institute for the Semi-Arid Tropics (ICRISAT)India
  2. 2.Groundnut Improvement ProgramICRISAT Sahelian CenterNiameyNiger

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