Letters between W. J. Kerr and Harold Goff

Letters concerning a position in elocution and public speaking at Utah Agricultural College

Right-of-way pest control : category 6 : Missouri manual 88 (1994)

Revised 12/94/1000

Chemical weed control in small grains

"Federal regulations on herbicide usage are frequently changed. So dealers and growers must stay informed on the status of label clearance. Read labels carefully and understand them before the herbicide is applied. Labels include application instructions as well as limitations and restrictions for a particular herbicide."--First page.L.E. Anderson, O. Hale Fletchall, and Harold Kerr (Department of Agronomy, College of Agriculture)Revised 2/83/8

Vine weeds in soybeans

"Vine weeds not only vigorously compete with crops, but they also plug up the combine and contribute to serious lodging. Once they are entangled in the soybean canopy, any attempt at cultivation strips foliage from the soybean plants. Severe infestations may cause 40 percent yield reduction. High moisture at harvest can also be a problem."--First page.Steve Livingston, L.E. Anderson, and Harold D. Kerr (Department of Agronomy, College of Agriculture)New 4/83/10

Herbicides for conservation tillage cropping systems

"Reliable weed control is necessary for successful reduced tillage cropping. In the future, energy sources for farm power may be in short supply and surely will become more costly in relation to the variable costs of other materials put into crop production."--First page.L.E. Anderson, O. Hale Fletchall and Harold D. Kerr (Department of Agronomy, College of Agriculture)Revised 9/83/12

Recommendations for chemical weed control in grain sorghum

12/77/15MHarold Kerr, Joseph H. Scott, O. Hale Fletchall and L. E. Anderson (Department of Agronomy, College of Agriculture

Chemical weed control in field corn for 1983, Part 2. Pre-emergence and postemergence

"Because the concentration of herbicides in commercial products may vary, herbicide rates are given on the basis of active ingredient (called acid equivalent for some herbicides) or per surface acre that will actually be treated."--First page.L.E. Anderson, O. Hale Fletchall, David Guethle, and Harold Kerr (Department of Agronomy, College of Agriculture)Revised 12/82/15

A report of sugar beet research in southeast Missouri, 1969

"Special Report 126, 10/70/100"Cover title."Sugar beet research was conducted by the University of Missouri Agricultural Experiment Station at the Delta Center near Portageville in 1969. Experiments included varieties, weed control, soil fertility, fungicides for control of cercospora leaf spot, row spacing, water infiltration, irrigation, fumigants, insecticides, and rhizoctonia control. Selection in breeding stock was made in the field for resistance to the root knot nematode, after which it was screened in the greenhouse. Sugar be et experiments were conducted on three of the major soil types of southeast Missouri."--Page 1

Changes in undergraduates’ marijuana, heavy alcohol and cigarette use following legalization of recreational marijuana use in Oregon

Background and AimsRecreational marijuana legalization (RML) went into effect in Oregon in July 2015. RML is expected to influence marijuana use by adolescents and young adults in particular, and by those with a propensity for substance use. We sought to quantify changes in rates of marijuana use among college students in Oregon from pre‐ to post‐RML relative to college students in other states across the same time period.DesignRepeated cross‐sectional survey data from the 2012–16 administrations of the Healthy Minds Study.SettingSeven 4‐year universities in the United States.ParticipantsThere were 10 924 undergraduate participants. One large public Oregon university participated in 2014 and 2016 (n = 588 and 1115, respectively); six universities in US states where recreational marijuana use was illegal participated both in 2016 and at least once between 2012 and 2015.MeasurementsSelf‐reported marijuana use in the past 30 days (yes/no) was regressed on time (pre/post 2015), exposure to RML (i.e. Oregon students in 2016) and covariates using mixed‐effects logistic regression. Moderation of RML effects by recent heavy alcohol use was examined.FindingsRates of marijuana use increased from pre‐ to post‐2015 at six of the seven universities, a trend that was significant overall. Increases in rates of marijuana use were significantly greater in Oregon than in comparison institutions, but only among students reporting recent heavy alcohol use.ConclusionsRates of Oregon college students’ marijuana use increased (relative to that of students in other states) following recreational marijuana legislation in 2015, but only for those who reported recent heavy use of alcohol. Such alcohol misuse may be a proxy for vulnerabilities to substance use or lack of prohibitions (e.g. cultural) against it.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/138912/1/add13906_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/138912/2/add13906.pd