Ecological analysis of peanut nematodes in Surkhondaryo region

The article carried out an ecological analysis of nematodes recorded in peanut crops in the Surkhandarya oasis. In order to study phytohelminthological fauna in 2019-2022, 442 samples of peanut plant roots and 442 samples of the soil around the roots were taken in 26 farms belonging to 13 districts of Surkhandarya oasis. Systematics of 136 species of nematodes found in the peanut plant as a result of the research are presented. According to the ecological analysis, there were 27 species of pararhizabionts, 13 species of eusaprobionts, 34 species of devisaprobionts, 39 species of non-pathogenic phytohelminths, and 23 species of pathogenic phytohelminths. According to the ecological analysis, the number of individuals in 5 ecological groups was distributed as follows: pararhizobionts - 839, eusaprobionts - 837, devisaprobionts - 6048 , nonpathogenic phytohelminths - 4882 and 3947 individ pathogenic phytohelminths. Among the parasitic nematodes noted to be economically important for the peanut plant are: Meloidogyne arenararia, M. javanica, M. incognita, Ditylenchus dispsaci, Xiphinema diversicaudatum, X. elongatum and X. pachtaicum .

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