Efficiency of Some Native Isolates of Saccharomyces cerevisiae, Trichoderma harzianum and T. ressei as Bio-Agents and Vydate Against Helicotylenchus exallus and Pratylenchus zeae Infesting Jasmine in Egypt
Abstract
Some native biological compounds viz., dry active yeast, Saccharomyces cerevisiae FT 700, dry active yeast, S. cerevisiae FT 700 + Trichoderma harzianum F 717, dry active yeast, S. cerevisiae FT 700 + T. harzianum F 717, T. harzianum F416, fresh active yeast, S. cerevisiae FT 700 and T. ressei F418 as well as vydate (Oxamyl 124%L) were evaluated at three doses (on base lower rate, recommended rate and higher rate) for controlling Helicotylenchus exallus and Pratylenchus zeae on jasmine cv. Balady under field conditions. All the tested compounds including vydate significantly reduced (P 0.05 and/or 0.04) H. exallus and P. zeae populations either in soil or roots. T. ressei F418 @ 180g/tree was superior in four cases followed by one case with dry active yeast, S. cerevisiae FT 700 @ 60g/tree in reducing H. exallus population in soil and roots in comparison to other treatments. However, T. harzianum F 717 @ 120g/tree was found superior to other.
Keywords
Biomanagement, Saccharomyces cerevisiae, Trichoderma harzianum, T. ressei, Pratylenchus zeae, Helicotylenchus exallus, Jasminum grandiflorum
