engleski

Insecticidal activity of plant origin preparatus against stored product insects

Plant dust and oil extract of Rosmarinus officinalis, Laurus nobilis, Thymus vulgaris, Origanum vulgare, Lavandula officinalis were evaluted for the control of infestations Acanthoscelides obtectus Say. and Sitophilus granarius (L.) imago in laboratory conditions. All investigated plants species have insecticidal influence on A. obtectus and S. granarius. For the control of A. obtectus the most effective was oil of L. nobilis, with dose of 0, 1ml per kg Phaseolus vulgaris L. (total mortality per 24 h). Less effective was dust (L. officinalis, O. vulgare) with dose of 1g per kg bean with total mortality of A. obtectus during 48 and 72 h exposition. Dust of L. nobilis, T. vulgare and R. officinalis had lower efficacy (total mortality of A. obtectus was attained after 15 days). For the control of S. granarius in wheat - Triticum vulgare the most effective was dust of L. nobilis with dose of 1g per kg (total mortality during 26 days), and less effective with dust of R. officinalis, T. vulgare and L. officinalis during 28 and 30 days of exposition. By the investigation in store house conditions with dust and oil extract of R. officinalis, L. nobilis, Th. vulgaris and L. officinalis against S. granarius in mercantile wheat, the most effective was dust of L. officinalis with dose of 37g per 5 kg (total mortality per 48h). In seed wheat the most effective was oil extract of L. nobilis in dose of 3, 7 ml per 5 kg (total mortaliti after 72h). Plant origin preparatus had not negative influence on the seed wheat germination

plant origin preparatus ; stored product insects ; control

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