Study

Effect of soils from six management systems on root-knot nematodes and plant growth in greenhouse assays

  • Published source details Kokalis-Burelle N., Peries X. & Chellemi D.O. (2005) Effect of soils from six management systems on root-knot nematodes and plant growth in greenhouse assays. Journal of Nematology, 37, 467-472.

Actions

This study is summarised as evidence for the following.

Action Category

Convert to organic farming

Action Link
Natural Pest Control
  1. Convert to organic farming

    A randomised, replicated, controlled greenhouse trial on a tomato Solanum lycopersicum farm in Florida, USA (Kokalis-Burelle et al. 2005) found root-knot nematode Meloidogyne incognita egg mortality and the number of eggs parasitized by fungi was similar between soils from organic (egg mortality 10-15 eggs, 0.5-2 eggs parasitised) and conventionally-managed treatments (mortality 12 eggs, 0-1 eggs parasitised). The severity of root galls on tomato plants was similar in soil from organic (0-0.92 on a scale of 0-10 where 10 is severe galling) and conventional plots (0.2-0.6). Cucumber Cucumis sativus plants planted after tomato also had similar root gall severity between both treatments. Tomatoes had been grown on the farm for 10 years. Treatments were set out in 0.16 ha plots and replicated six times. Organic plots were established in July 2000: treated with 22 t/ha chicken manure, 67 t/ha partially composted municipal plant waste and sown with two cover crops: sunn hemp Crotalaria juncea in August and Japanese millet Echinochloa crusgalli in March. Conventional plots were treated with pesticides and herbicides. Soil samples were taken in each plot in July 2001, placed in 7.8 l plots in a greenhouse and planted with two tomato seedlings/pot. Nematode eggs were placed in each pot, one or six weeks after planting to assess mortality and fungal parasitism. Tomato roots were assessed for galling 42 days after transplanting. Cucumber plants were transplanted to the pots after the tomato plants were removed.

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