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- Title
Étude de l'infestation des céréales par les nématodes à kyste « Heterodera spp. » et distribution des espèces en cause dans l'Ouest de l'Algérie.
- Authors
Assia, Fatiha Righi; Righi, Kada; Boungab, Karima; Mokabli, Aissa
- Abstract
The extension of cereal areas in western Algeria (more than 1 million ha from the coast to Sahara) has resulted in the manifestation of several pests, the most formidable ones being the cereal cyst nematodes. The current state of infestation and the distribution of the different species of Heterodera in this region of Algeria are studied here. The nematode analysis of 1787 samples, representative from 156 communities and 12 willayas, concluded that nematodes are present in 53% of samples. The frequency of infection varies between 48 and 51%, depending on the region, with local peaks reaching 100%. These infestations are caused by five species: Heterodera avenae, H. latipons, H. hordecalis, H. mani and H. filipjevi. These species are found either in pure or mixed populations. H. avenae is the dominant species in 50% of surveys, followed by H. latipons found in 34% of prospected localities and 34% of the samples. Heterodera mani, sometimes preceded by H. filipjevi or H. hordecalis in some localities, often takes the third place (7%); it is present in 34 samples representing a rate of 4%. H. hordecalis species, subservient to barley, takes the fourth place and has been reported in 6% of localities (35 samples, 4%). H. filipjevi, species very close to H. avenae, appears to be important in some localities. Its presence was marked in 2% of localities and 3% of the samples (19 samples). Establishing infestation and distribution maps for some areas, namely Mascara, Relizane and Sidi Bel Abbes, could contribute to a decision support tool that would allow monitoring and managing this pest risk at the right time.
- Subjects
ALGERIA; CARTOGRAPHY; NEMATODES
- Publication
Cahiers Agriculture, 2019, Vol 28, Issue 4, p1
- ISSN
1166-7699
- Publication type
Article
- DOI
10.1051/cagri/2019017