Economic importance of plant parasitic nematodes on sugarcane
1995
Nuchanart Tangchitsomkid | Buncha Chinnasri | Upsorn Pliansinchai | Ahnon Bonduang (Department of Agriculture, Bangkok (Thailand). Plant Pathology and Microbiology Div. Nematology Section)
More than 275 species of 48 genera of plant parasitic nematodes have been recorded from the roots and rhizosphere of sugarcane. The most economically important nematodes are root lesion nematode (Pratylenchus spp.), stunt nematode (Tylenchorhynchus spp.), root-knot nematode (Meloidogyne spp.) and stubby root nematode (Paratrichodorus spp.). In Thailand these nematodes are also found in sugarcane fields. Among these, Tylenchorhynchus spp. is the nematode most abundantly and frequently encountered. Plant-parasitic nematodes cause direct and indirect consequences on sugarcane such as damage to roots, delay in shoot emergence and reduction in shoot size, number of tillers, length of stalks and sucrose content. Several environmental factors influence dissemination of nematodes. The nematodes occur more abundantly in sandy loam soil than in clay soil. The population of the nematodes increases in soil with moisture content of 25-27 percent and decreases as the moisture content less than 14 percent.
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