Efficacy of metam sodium and metam potassium on root-knot nematode and Fusarium root rot fungus in cucumber plants in controlled agricultural systems

Efficacy of metam sodium and metam potassium on root-knot nematode and Fusarium root rot fungus in cucumber plants in controlled agricultural systems

2014

E09179

Effects of metam sodium (Solasan 51% SL, a.i., w/v) [MS] and metam potassium (Tamifume 69% SL, a.i., w/v) [MP], in addition soil treated with essential plant oils such as Aloe-vera barbadensis (Aloe-vera), Eucalyptus globules (Eucalyptus), Lupinus luteus (Lupinus) and Sesamum indicum (Sesame) on populations of root-knot nematode (Meloidogyne incognita), disease incidence (%) of root rot (Fusarium solani), total microbial counts of fungi, aerobic bacteria and spore forming bacteria, frequency (%) of common fungi and yield of cucumber plants (Cucumis sativus L.) were studied, in controlled agricultural systems, under commercial plastic house conditions after 45 and 90 days of treatment. Two experiments were conducted. An experiment I was designed to estimate the effect of MS and MP, separately. A second experiment was conducted to study the effect of MP only or combined with essential plant oils. Results revealed that all treatments highly reduced the populations of M. incognita parameters, than untreated control. In experiment I, MP highly reduced the total final population of nematode, than MS as well as untreated control, where rates of built up reached to 0.035 & 0.065 with MP, 0.068 & 0.080 with MS, compared to 1.130 & 2.620 in untreated control, respectively. In experiment II, soil fumigated with MP plus treated essential plant oils of Aloe-vera, Eucalyptus and Sesame highly reduced the nematode population, than other treatments. Our results also revealed that all treatments highly reduced the incidence (%) of root rot disease, than untreated control. MP highly reduced the disease incidence, than MS in experiment I. In experiment II, MP only, MP+Aloe-vera and MP+Eucalyptus highly reduced the disease incidence, than other treatments. Effects of treatments on microbial counts as well as on frequency % of common fungi in rhizospheres of treated cucumber plants as well as untreated control were determined. All treatments increased the yield parameters of cucumber fruits. i.e. averages of fruits per plant and fruit weight per plant in one harvest as well as fruit yield weight per plant in one season (about 12 harvests).

10(4):96-106, JOURNAL OF AMERICAN SCIENCE

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