The behavior of six herbicides in soil was studied under controlled laboratory conditions. Sorption of bromacil, chiorotoluron and diuron was assessed by the batch equilibration procedure over a broad range of aqueous phase sorbate concentration. Linear equilibrium sorption constants (K[subscript p]) were slightly higher at 4° C than at 25°...
Penetration has long been recognized as an important factor
in the action of chemicals on plants. The effectiveness of herbicides
on such plants as blackberries is often thought to be limited by the
failure to obtain adequate penetration through the cuticular barrier.
A number of factors, among them relative humidity,...
The purpose of this research was to determine, if there are and the
nature of, the common professional education competencies of selected
community college vocational instructors. The respondents in the study
represented four instructors from each of 40 community colleges selected
from the four western states of California, Colorado, Oregon...
This study was undertaken to see if a method of handling
segregating populations could be employed which combined the positive
attributes of the traditional pedigree and-bulk methods. Derived F₅
lines from the pedigree, bulk, and what is identified as a modified
bulk method, were obtained from three winter wheat crosses....
A study was conducted on German velvetgrass (Holcus mollis L.), a weedy, rhizomateous perennial grass introduced in the
United States in relatively recent years, The purpose of this study
was to learn more about its distribution, growth habits, and control
under conditions found in Western Oregon. German velvetgrass infestations of...
In recent years almost all states have legislated educational
and licensing programs to protect the welfare and property of citizens
engaged in outdoor recreational pursuits. Such programs exist
for automobile, motorcycle, airplane, and snowmobile operators.
However, boating continues to be one of the major recreational outdoor
activities where operators of...
