“…Among more than 100 known species, the tropical ( Meloidogyne arenaria ( Chitwood, 1949 ; Neal, 1889 ), Meloidogyne incognita ( Chitwood, 1949 ; Kofoid and White, 1919) , and Meloidogyne javanica ( Chitwood, 1949 ; Treub, 1885 ) and the temperate ( Meloidogyne hapla , Chitwood, 1949 ) root-knot nematodes are the most economically important and commonly known species of the world ( Jones et al, 2013 ; Kazachenko and Mukhina, 2013 ; Nguyen et al, 2019 ). On ginger, Zingiber officinale Roscoe, six species of the genus Meloidogyne have been reported including M. arenaria , M. hapla , M. incognita , M. javanica , M. thailandica , and M. enterrolobii ( Handoo et al, 2005 ; Sikora et al, 2018 ; Xiao et al, 2018 ), of which, M. incognita seems to be the most frequently reported nematode associated with ginger ( Myers et al, 2017 ). Especially, Meloidogyne javanica has been found associated with ginger in several countries, including the United States, India, and Brazil ( Baptista Dos Santos and Lazaro Lozano, 1993 ; Hajihassani et al, 2019 ; Singh and Gupta, 2011 ).…”