Efficacy of dried seed powder of some plant species as soil amendment against Meloidogyne incognita (Tylenchida: Meloidogynidae) on tomato

• Published in: Archiv für Phytopathologie und Pflanzenschutz Vol. 45; no. 10; pp. 1246 - 1251
• Main Authors: Radwan, M.A, Farrag, S.A.A, Abu-Elamayem, M.M, Ahmed, N.S
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 01.06.2012; Taylor & Francis Ltd
• Subjects: Ammi majus; Brassica; Carbofuran; control; Eucalyptus; Flowers & plants; greenhouses; Herbivores; Lycopersicon esculentum; Matricaria chamomilla; Meloidogyne incognita; nematicidal properties; nematicides; Nematoda; organic soil amendments; Peganum harmala; phytotoxicity; Plant protection; Powder; powders; Raphanus sativus; Ricinus communis; root galls; root-knot nematodes; Roots; Seeds; Shoots; Sinapis alba subsp. alba; Soil; Soil amendment; soil amendments; Solanum lycopersicum; Solanum nigrum; tomatoes; Tylenchida
• ISSN: 1477-2906; 0323-5408; 1477-2906
• DOI: 10.1080/03235408.2012.665217

The nematicidal activity of dried ground seeds of Ammi majus, Matricaria chamomilla, Ricinus communis, Brassica alba, B. oleracea, Peganum harmala, Solanum nigrum, Raphanus sativus and Eucalyptus sp. was assessed against the root-knot nematode, Meloidogyne incognita, infecting tomato in a glasshouse. The powdered seeds of the tested plants were incorporated into the soil at the rate of 5 g/kg and their nematicidal activity was compared with that of the synthetic nematicide carbofuran at the rate of 0.01 g a.i./kg. The effects of the treatments on the growth of tomato were also examined. The populations of M. incognita in the soil and root galling of tomato were significantly suppressed by the powdered seeds of all the plant species tested, with the greatest reduction occurring in soil amended with M. chamomilla, followed by soil treated with powdered seeds of A. majus, S. nigrum, R. communis and Eucalyptus sp. The efficacy of B. oleracea, B. alba, M. chamomilla and R. communis in reducing the number of J₂ in the soil was similar to that of carbofuran. All amendments, except powdered seeds of M. chamomilla and A. majus significantly increased shoot length compared to the untreated inoculated plants. Shoot weight was significantly increased in soil amended with powdered seeds of B. oleracea, B. alba, R. communis, P. harmala and S. nigrum, but not in soil amended with the other seed powders when compared with untreated inoculated soil. Significant increases in root length occurred in pots amended with seed powder of B. alba, R. communis and Eucalyptus and in root weight for P. harmala. None of the tested dried seeds was phytotoxic to tomato plants at the applied rate.