Published April 1962. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Application of herbicides to the soil has become an important
factor in the production of row crops. Economic production
of sugar beet (Beta vulgaris), an important row crop, requires
efficient methods of weed control.
Two experimental herbicides, 3-cyclohexyl-5,6-trimethylene
uracil (DP634) and 2-bromo-6't-butyl-o-acetotoluidide (CP32179),
had shown promise in sugar beet screening...
Studies were conducted to determine the nature of the interaction
between atrazine (2-chloro-4-ethylamino-6-isopropylaminos-
triazine) and magnesium on tomatoes. This interaction was
studied under two light regimes: continuous light and a 12-hour
photoperiod. Tomato plants were grown in sand cultures at three
levels of magnesium fertilization. Four weeks after planting,
atrazine...
Previous field research with terbacil (3-tert-butyl-5-chloro-
6-methyluracil) has shown that early fall applications to dry soil
performed better than did late fall or early winter applications to
wet soil. Field and greenhouse studies were conducted to determine
the effect of soil moisture content at time of application and the
effect...
Published January 1969. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Lateral diffusion of S-ethyl N-ethylthiocyclohexanecarbamate
(cycloate)¹ is essential for satisfactory weed control with injection
type incorporation in sugar beet (Beta vulgaris Linn.) production.
Previous field experience with injection incorporation has indicated
that sufficient lateral diffusion for satisfactory weed control has not
occurred under all field conditions. Researchers who have been...
The control of filbert (Corylus Avellana L.) suckers by means
of herbicides was investigated in three phases during 1968 and 1969.
(1) Screening trials, on canned filbert trees in the greenhouse, to
determine the effectiveness of various herbicides and concentrations
in controlling vegetative growth. (2) A summary experiment in the...
Chemicals are being sought that can control weeds in lettuce
under different environmental conditions, soil types and weed populations.
The extensive or repeated use of a herbicide may lead to important
changes in the weed population which call for new materials
that can take care of the modified situation.
In...
Comparison of the toxic effects of six herbicide formulations in simultaneous moving water and static water bioassays showed that mortality of coho salmon, Oncorhynchus kisutch (Walbaum), was less in the moving water tests. The moving water tests were conducted in troughs with powered paddlewheels while the static tests were conducted...