New Zealand Plant Protection 68 (2015): 13-18
High sorption by Pinus radiata (D. Don) logs may limit insecticidal efficacy of a fumigant by rapidly removing it from the treated headspace. The sorption characteristics of a new fumigant, ethanedinitrile (EDN), were quantified for recently harvested pine logs, and the robustness of a proposed EDN sorption model developed for sawn timber was tested. Over a 10-h period, average concentrations were 17.3% ± 0.7 of the initial dose for logs with sealed ends and 9.4% ± 0.4 for unsealed ends. This is a high rate of sorption compared with other fumigants, such as methyl bromide. A proportional drop in headspace concentration over time was consistent for the two doses (20 and 50 g/m3) evaluated, confirming that EDN sorption is influenced by the dose applied. Bark cover did not significantly influence EDN sorption. A revised sorption model for EDN is proposed here.
Keywords: alternative, EDN, fumigation, methyl bromide, quarantine treatments.
|Developing new fumigation schedules for the phytosanitary treatment of New Zealand export logs: comparative toxicity of two fumigants to the burnt pine longhorn beetle, Arhopalus ferus|
A.J. Najar-Rodriguez, M.K.D. Hall, A.R. Adlam, A.J. Hall, S.B. Burgess, K.G. Somerfield, B.B.C. Page and D.W. Brash (2015)
New Zealand Plant Protection 68: 19-25
|Effect of fumigant dose, timber moisture content, end-grain sealing, and chamber load factor on sorption by sawn timber fumigated with ethanedinitrile|
T. Pranamornkith, M.K.D. Hall, A.R. Adlam, K.G. Somerfield, B.B.C. Page, A.J. Hall and D.W. Brash (2014)
New Zealand Plant Protection 67: 66-74
|Ethanedinitrile: potential methyl bromide alternative to control Arhopalus ferus (Mulsant) in New Zealand sawn timber exports|
T. Pranamornkith, M.K.D. Hall, A. Najar-Rodriguez, A.R. Adlam, K.G. Somerfield, B.B.C. Page, D.I. Hedderley and D.W. Brash (2014)
New Zealand Plant Protection 67: 75-79
Copyright © 2015 New Zealand Plant Protection Society (Inc.).