Incidence of root-knot nematodes (Meloidogyne spp.) in Fiji: a preliminary investigation

Khurma, Uma R.; Deo, Roneel Rimal; Singh, Sunil Kumar

doi:10.1071/sp08014

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…Pigweeds (Amaranthus spp.) have been consistently reported as good hosts of root-knot nematodes in previous studies as well (Bendixen et al 1979;Kaur et al 2007;Khurma et. al 2008).…”

Section: Resultssupporting

confidence: 52%

“…Knowledge of the host status of weeds common in agricultural systems can be used to develop targeted weed management to improve efficacy of the nematode management strategies used, especially in subsistence and organic farming. In a preliminary survey, root-knot nematode infections were noted from a number of commonly grown crops and a few weed species in Fiji (Khurma et al 2008). This led to a more extensive and systematic survey of root-knot nematode diversity and distribution in Fiji.…”

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confidence: 99%

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Weed Hosts of Root-Knot Nematodes and Their Distribution in Fiji

2010

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Weeds can act as reservoir hosts of a range of pests and diseases. Information and knowledge on the host status of weeds to common pests and diseases can be used to develop integrated weed and pest management strategies. As part of a survey on the distribution and diversity of root-knot nematodes on crops in Fiji, the root-knot nematode host status of weeds was also studied. Weeds growing in root-knot nematode infested farms (n= 189) and bioassay pot soil samples (n= 277) were identified, and their host status was determined on the basis of a root gall and egg-mass index scale from 0 to 5. A total of 45 weed species were recorded as potential weed hosts of root-knot nematodes with a gall index from 1 to 5. Using the weed and tomato bioassay method, a total of 11 nonhost weed species were recorded with a gall index of 0, relative to infected tomato growing in pot soil samples. Common weeds infected by root-knot nematodes on farms and in bioassay pot soil included slender amaranth, old world diamond-flower, tropic ageratum, sicklepod, mimbra, balsamapple, purple bushbean, little ironweed, ivy gourd, and cutleaf groundcherry. The presence of egg masses on the weed hosts indicated their ability to sustain root-knot nematode populations and, thus, their potential to act as reservoir hosts.

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“…Pigweeds (Amaranthus spp.) have been consistently reported as good hosts of root-knot nematodes in previous studies as well (Bendixen et al 1979;Kaur et al 2007;Khurma et. al 2008).…”

Section: Resultssupporting

confidence: 52%

mentioning

confidence: 99%

Weed Hosts of Root-Knot Nematodes and Their Distribution in Fiji

2010

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“…Severe infestations cause considerable yield losses of eggplant crops and can also affect consumer acceptance of the produce. RKNs are soil borne pathogens (Starr et al, 1989;Manzanilla-López & Starr, 2009) and have a wide range of hosts (Hussey, 1985;Khurma et al, 2008;Jones et al, 2013); consequently, their management is difficult. RKN management strategies include the use of nematicides and resistant cultivars and rootstocks .…”

Section: Introductionmentioning

confidence: 99%