With agriculture continuing to play an ever-increasing role in our modern economy, more and more attention is being directed toward the hitherto more or less neglected finer points of crop production. In the past it has been the tendency to concentrate research on those factors which most obviously affect agricultural...
Experiments conducted in the greenhouse showed that the leafhopper,
Colladonus montanus reductus (Van Duzee), is a long-day
insect. This conclusion is based on the production of diapausing eggs
when the leafhoppers were kept under short days (ten hours) during
the nymphal stage and the adult pre-oviposition period. Continuous
development of...
As Europeans settled the Willamette Valley in the 1800s, they began to simplify Oregon's largest river contained wholly within state boarders—the Willamette. The river lost miles of channels from dikes, dams, and development. Some channels vanished under concrete. Others became meander scars, or shallow, dry depression in the land where...
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Kathleen Dean Moore
As Europeans settled the Willamette Valley in the 1800s, they began to