946 resultados para Agricultural colleges
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Transportation Department, Office of University Research, Washington, D.C.
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Caption title.
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Title from cover.
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"The purpose of this program is to enhance the attractiveness of natural resources management careers to African-Americans"--P. 5.
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Mode of access: Internet.
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Orosius orientalis is a leafhopper vector of several viruses and phytoplasmas affecting a broad range of agricultural crops. Sweep net, yellow pan trap and yellow sticky trap collection techniques were evaluated. Seasonal distribution of O. orientalis was surveyed over two successive growing seasons around the borders of commercially grown tobacco crops. Orosius orientalis seasonal activity as assessed using pan and sticky traps was characterised by a trimodal peak and relative abundance as assessed using sweep nets differed between field sites with peak activity occurring in spring and summer months. Yellow pan traps consistently trapped a higher number of O. orientalis than yellow sticky traps.