ARS | Publication request: Comparison of Brassicaceae for Meloidogyne incognita and Pratylenchus penetrans Control

Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: March 17, 2009
Publication Date: August 21, 2009
Citation: Zasada, I.A., Meyer, S.L., Morra, M.J. 2009. Comparison of Brassicaceae for Meloidogyne incognita and Pratylenchus penetrans control. Phytopathology. 99:S148.

Technical Abstract: There is growing interest in utilizing Brassicaceae seed meals in pest management systems. To achieve consistent and reliable pest suppression with these materials, we must have a deeper understanding of their relative toxicities and the application rates necessary for acceptable control. Towards this end, we evaluated four mustard seed meals, Brassica juncea, Sinapis alba, B. napus ‘Sun’ (low glucosinolate-containing seed meal) and B. napus ‘Dwarf Essex’ (high glucosinolate-containing meal) at rates ranging from 0 to 10% dry w/w against Meloidogyne incognita second-stage juveniles (J2) and Pratylenchus penetrans mixed stages. At rates greater than 5%, all of the meals resulted in almost 100% nematode mortality compared to an untreated control. The meals differed in their toxicity against the plant-parasitic nematodes. At a 0.5% rate, the relative order of meal potency was B. juncea > B. napus ‘Dwarf essex’ = S. alba > B. napus ‘Sun’. At application rates lower than 5%, the toxicity of these seed meals to plant-parasitic nematodes was related to glucosinolate type and concentration.