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

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

Population Dynamics of Sugar Beets, \u3ci\u3eRhizoctonia solani\u3c/i\u3e, and \u3ci\u3eLaetisaria arvalis\u3c/i\u3e: Responses of a Host, Plant Pathogen, and Hyperparasite to Perturbation in the Field

Rhizoctonia solani causes crown rot of sugar beets, a severe disease that has destroyed up to 60% of the plants in a test field in western Nebraska. Laetisaria arvalis, a natural hyperparasite of Rhizoctonia spp., was isolated from fields in western Nebraska. To test for the potential for biological control of R. solani, in November 1980 (following harvest) we applied various combinations of a nematicide (Telone II; Dow Chemical Co.), a nutrition source (sugar beet pulp), and an inoculum of L. arvalis in a randomized block design. Populations of R. solani, L. arvalis, and sugar beets were monitored monthly through October 1981 (just after harvest). In control and nematicide plots, the R. solani population did not change significantly through time. In plots inoculated with L. arvalis, the R. solani populations declined through March, concomitant with an increase in L. arvalis. L. arvalis then declined with a corresponding increase in the R. solani populations. Beet plant numbers declined significantly in all treatments. We suggest that reduction of the R. solani populations with the hyperparasite L. arvalis is possible but that a stable equilibrium naturally exists

Herbicides for soybeans

"Soybean herbicides can be soil incorporated before planting (PPI). They can be applied to the soil surface at planting time or before crop emergence (preemergence). Or they can be applied in a split application (sequential) where the first product is incorporated and followed by a pre-emergent applied over the row or broadcast. A final application method is post-emergence treatment."--First page.Zane R. Helsel, Harold D. Kerr, E.J. Peters, David Goethle, L.E. Anderson, James A Schaffer, and O'Hale Fletchall (Department of Agronomy College of Agriculture)Revised 12/84/12

Chemical weed control in grain sorghum

"Federal regulations on the use of herbicides change frequently, so stay informed on the status of label registration. To the best of our knowledge, this guidesheet conforms to laws and regulations at the time of writing."--First page.James A. Schaeffer, Harold D. Kerr, David Guethle, O. Hale Fletchall, E.J. Peters, L.E. Anderson, and Zane R. Helsel (Department of Agronomy, College of AGriculture)Revised 1/85/10

Herbicides for grain sorghum 1984

"Federal regulations on the use of herbicides change frequently, so stay informed on the status of label registration. To the best of our knowledge, this guidesheet conforms to laws and regulations at the time of writing."--First page.James A. Schaeffer, Harold D. Kerr, David Guethle, O. Hale Fletchall, E.J. Peters, L.E. Anderson, and Zane R. Helsel (Department of Agronomy, College of AGriculture)Revised 1/84/10

Chemical weed control in field corn for 1982 -- part 1 : preplanting incorporated treatments

Harold D. Kerr, Joseph H. Scott, E. J. Peters, L. E. Anderson, O. Hale Fletchall, David Guethle, Zane R. Helsel and Howard Guscar (Department of Agronomy, College of Agriculture)New 1/82/15

Chemical weed control in field corn for 1982, Part 2. Pre-emergence and postemergence

Harold D. Kerr, Joseph H. Scott, E. J. Peters, L. E. Anderson, O. Hale Fletchall, David Guethle, Zane R. Helsel and Howard Guscar (Department of Agronomy, College of Agriculture)Revised 1/82/15

Young adult outcomes associated with teen pregnancy among high-risk girls in a randomized controlled trial of Multidimensional Treatment Foster Care

Teen pregnancy is associated with a host of deleterious outcomes for girls, such as drug use and poor parenting. Thus, reducing teen pregnancy rates could improve long-term developmental outcomes for girls, including adjustment during young adulthood. Based on the positive effects of Multidimensional Treatment Foster Care (MTFC) relative to group care (GC) in a study of adolescent girls (significantly fewer pregnancies reported in the 2-year follow-up for MTFC girls), the present study followed this sample into young adulthood (approximately 7 years post-baseline) to examine the effects of adolescent pregnancy on young adult substance use and pregnancy-related outcomes. All participants were randomly assigned to MTFC (N = 81) or GC (N = 85) as adolescents as part of a randomized controlled trial (RCT). Results from logistic regression analyses indicated that becoming pregnant during the 2-year follow-up was significantly related to illicit drug use, miscarriage from a new pregnancy, and child welfare involvement 7 years post-baseline. In addition, baseline marijuana use predicted marijuana use at 7 years post-baseline. © 2013 Copyright Taylor and Francis Group, LLC