Infestation of Black Pepper Vines by the Root-Knot Nematode <I>Meloidogyne incognita</I>, at Tomé-Acu, Pará, Brazil

DOI

Bibliographic Information

Other Title
  • ブラジル・パラ州トメアスーのコショウ栽培におけるサツマイモネコブセンチュウの寄生

Description

Black pepper fields at Tomé-Acu, near Belém, Pará, Brazil where a disease called “foot rot” caused by Fusarium. solani f. piperi has been occurring, were examinedfor the infestation by the root-knot nematodes, predominantly Meloidogyne incognita. Seventy-four fields and 10 plants from each field were arbitrarily chosen, and the roots in a small portion of rhizosphere of each plant were taken off and rated for the root-knot index. Results were that (i) only one field was found uninfested by the nematodes, (ii) 91% of plants examined were infested by the nematodes, and (iii) three fourths of plants examined were of severe infestation. The infestation of plants by the nematodes appeared comparatively slight on young plants less than 5-year-old, and also no correlation with soil types. No Radopholus similis has been found from this black pepper plantation, although plant symptoms of yellowing leaves appear somewhat similar to those caused by R. similis in Indonesia.

Journal

Details 詳細情報について

  • CRID
    1390282679314718976
  • NII Article ID
    130004298716
  • DOI
    10.14855/jjn1972.5.36
  • ISSN
    21862672
    03882357
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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