Control of plant parsditic nematodes infecting certain solanaceous plants under biotic culture conditions
2011
El-Kelany, U.S.F.M.
This study was conducted to evaluate the effect of some commercial bionematicides and biofertilizers against the root lesion nematode Pratylenchus spp. infecting potato cv. Spunta and the root knot nematodes Meloidogyne spp. infecting tomato cv. Castle Rock under biotic culture system during two successive seasons. The bioproducts under investigation were; Dbx 1003 20%, Stanes bionematone, Stanes Sting, Nemafree, Stanes Symbion VAM Plus, Micronema, Kelpak, Green Alga, Microbien, Phosphorine and Potassuimag containing certain bioactive agents. Such bioactive agents were Dactylaria brochopaga, Paecilomyces lilacinus, Bacillus subtilis, Serratia spp., Glomus fasciculatum,Pseudomonas fluorescens, Bacillus spp., Ecklonia maxima, Scendesmus spp, Pseudomonas spp., Bacillus megatherium and Bacillus circulanes; respectively. Obtained results proved that all treatments significantly (P¡Ü0.05) reduced Pratylenchus spp. population both in soil and in potato roots and increased potato plant growth and yield production as compared to untreated control. The highest potato yield production in the first season (55%) resulted from the application of phosphorine,Potassiumag plus green alga and D. brochopaga liquid, whereas in the second season, such efficacy was obtained from the application of Microbien,Potassiumag plus green alga and D. brochopaga liquid (25.8%). All treatments significantly (P¡Ü0.05) reduced Meloidogyne spp. population in soil and inside tomato roots and enhanced tomato shoot weight and yield production as compared to untreated control. The highest tomato yield production in the first season (68.7%) was achieved from the application of biofertilizers plus D. brochopaga granules and in the second season was (70.9% associated with the application of biofertilizers plus Green alga, D. brochopaga and B. subtilis
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