evaluation of the effect powder and aqueous extracts of some plant species on yield tomato and reproduction of meloidogyne incognita

evaluation of the effect powder and aqueous extracts of some plant species on yield tomato and reproduction of meloidogyne incognita

tomato plants (lycopersicon esculentum), cultivar shaft were grown in pots. effect of aqueous extract of different plant species on the activity of root-knot nematode (meloidogyne incognita) and the vegetative growth indices of the host plant, was investigated. treatment of the nematode-inoculated tomatoes with plant extracts of papaver rhoeas, euphorbia helioscopia, descurainia sophia, gypsophila pilosa and mentha pulegium, significantly increased shoot dry weights of treated plants over control (non-inoculated tomatoes without plant extract) by about 135, 122, 113, 124 and 127%, respectively.

also gall index in nematode inoculated tomatoes treated with the nematicide, euphorbia helioscopia, plantago lanceolata, d. ophia, g. pilosa, brassica napus and, cardaria draba respectively showed an increase of about 92, 74, 60, 58, 52, 50 and 50% over control. compared with control, reproduction factor of the nematode on tomato plants treated with the nematicide, mentha piperita brassica napus, cardaria draba, euphorbia helioscopia and g. pilosa reduced to 97, 47, 40, 17, 10 and 2%, respectively.