STUDIES OF POPULATION DYNAMICS OF NEMATODES IN THE ROOTS AND RHIZOSPHERE OF TOMATO CROPSIN TASHKENT REGION

Abstract

Population dynamics of nematodes from the roots and rhizosphere of tomato plants under greenhouse conditions were studied. Maximum number of individual abundances of the nematodes were recorded during budding stage of the Tomato plants. The following different types of nematodes were recorded during different developmental stages of the tomato plants.in the sprouting (germination) phase - Eudorylaimus labiatus, Heterocephalobus elongatus, Diplogaster longicaudata, Eucephalobus oxyroides, Psilenchus clavicaudatus; in the seedling phase - Geomonhystera villosa and Dorylaimoides elegans; in the budding phase - Xylorhabditis operosa, Panogralaimus armatus, Paraphelenchus pseudoparietinus, Nothotylenchus acris; in the flowering phase - Clarcus papillatus, Melonchulus solus, Mesorhabditis irregularis, Aphelenhoides subtenuis; in the phase of initial fruit development - Aphelenhoides limberi and Aph. saprophilus; in the ripening phase- Eudorylaimus centrocercus, Heterocephalobus filiformis, Chiloplacus lentus, Acrobeles complexus, Aphelenchus solani, Helicotylenchus nannus, Meloidogyne arenarie. The species ofParasitc nematodes Meloidogyne arenarei, Ditylenchus dipsaci, Pratylenchus pratensis, Psilenchus lavicaudatus, Bitylenchus dubius, Helicotylenchus nannus were also identified. The preliminary findings of our research work would be helpful in devising sustainable management strategies of the Nematodes.