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Rattail fescue (Vulpia myuros) control in Italian ryegrass (Lolium multiflorum) grown for seed

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Graduation date: 1992Italian ryegrass growth and production from\ud positionally selective applications and sublethal rates of a\ud nonselective herbicide were compared to growth and\ud production when treated with diuron applied preemergence as\ud a broadcast treatment and safened by activated carbon\ud applied over the crop row. In the positionally selective\ud treatments, herbicide spray was directed to leave an\ud untreated zone over the crop row at planting. Growth\ud analysis indicated no detectable differences when Italian\ud ryegrass safened by directed spray was compared to Italian\ud ryegrass safened by activated carbon. The major difference\ud between systems was greater weed control in the crop row for\ud carbon-safened treatments.\ud The non-safened application superimposed sublethal\ud diuron rates over Italian ryegrass and rattail fescue grown\ud in varying densities and proportiors. Growth analysis of\ud monoculture stands indicated differences due to planted\ud density, species, and herbicide, whereas growth analysis of\ud plants grown as space-planted individuals indicated\ud difference due to species only. Diuron at the rates applied\ud did not affect seed yield or above ground dry weight.\ud Soil samples were taken in crop rows where diuron was\ud applied as directed spray or broadcast spray safened by\ud carbon. Samples were assayed and soil profile\ud concentrations mapped. To assist future investigators'\ud understanding of the role rainfall plays in herbicide\ud movement from directed applications, elementary rainfall\ud depth and occurrence models were examined. The Markov and\ud mixed-exponential models adequately described rainfall\ud occurrence and depth patterns for Corvallis, Oregon

Year: 1991
OAI identifier: oai:ir.library.oregonstate.edu:1957/36537
Provided by: ScholarsArchive@OSU

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Citations

  1. (1977). Herbicide-plant selectivity.
  2. (1987). The use of graduating functions.
  3. (1972). Factors affecting use of activated carbon to improve herbicide selectivity. Weed Sci.
  4. (1978). Influence of Italian ryegrass density on efficacy of diuron herbicide.
  5. (1969). Effects of plant population and fertilizer on the growth and yield of soybeans.
  6. (1969). Analysis of the growth of soybeans as affected by plant population
  7. (1980). Adsorption-desorption phenomena.
  8. (1986). Growth analysis of soybean isolines differing in pubescence density.
  9. (1978). Atrazine adsorption on soil as influenced by temperature, moisture content, and electrolyte concentration. Weed Sci.
  10. (1980). Separation of pesticides by capillary gas chromatography; Part 1: s-triazines and substituted urea herbicides.
  11. (1962). Equipment for subsurface application of herbicides in fallow land.
  12. (1962). A Markov chain model for daily rainfall occurrence at Tel Aviv.
  13. (1979). Practical capillary gas chromatography - a systematic approach.
  14. (1982). Plant Growth Curves: The Functional Approach to Plant Growth Analysis. Edward Arnold Limited,
  15. (1983). Subsurface placement methods for metribuzin and trifluralin. Weed Sci.
  16. (1975). Selectivity of herbicides.
  17. (1988). Publication No. F-32. Eastman Kodak Co.,
  18. (1981). Control of annual bluegrass (Poa annua) in perennial ryegrass (Lolium perenne) seed fields. Weed Sci.
  19. (1978). Volunteer Kentucky bluegrass (Poa pratensis) control in Kentucky bluegrass seed fields. Weed Sci.
  20. (1973). Clean grass seed crops established with activated carbon bands and herbicides. Weed Sci.
  21. (1988). Evaluating groundwater contamination potential from herbicide use. Weed Tech.
  22. (1969). The determination of some substituted urea herbicide residues in soil by electron -capture gas chromatography.
  23. (1979). Multivariate interpolation at arbitrary points made simple.
  24. (1987). Use of between-row (directed) herbicide bands for weed control during establishment of grasses grown for seed.
  25. (1983). Applied linear regression models.
  26. (1973). Direct and indirect effects of atrazine, 2,4-D and dalapon mixtures on conifers. Weed Sci.
  27. (1985). Split-plot design: variations.
  28. (1986). Intake rate: sprinkler infiltrometer.
  29. (1987). Methods to study interactions among crops and weeds.
  30. (1984). Limiting factors and physiological response to competition.
  31. (1978). DUD, a derivative-free algorithm for nonlinear least squares.
  32. (1981). A comparison of three distributions for the generation of daily rainfall amounts.
  33. (1970). Weeds of California.
  34. (1984). Relationships between growth rate and competitive ability of four annual weeds.
  35. (1987). Guide for perscnal computers,
  36. (1988). User's guide. SAS,Institute Inc.,
  37. (1987). Competition from Vulpia myuros (L.) K.C. Gmel in pastures, and its control by coating seeds with herbicides.
  38. (1973). Point processes of seasonal thunderstorm rainfall. 1. Distribution of rainfall events.
  39. (1983). An alternative approach to the analysis of mixed cropping experiments. 1. Estimation of competition effects.
  40. (1983). An alternative approach to the analysis of mixed cropping experiments. 2. Marketable yield.
  41. (1977). Allometric growth studies of the carrot crop; I. Effects of plant development and cultivar.
  42. (1977). Allometric growth studies of the carrot crop; II. Effects of cultural practices and climatic environment.
  43. (1988). Black light radiant energy.
  44. (1986). Herbicide mobility in soil leaching columns.
  45. (1985). Model building I: defining new predictors.
  46. (1961). A device for subsurface application of herbicides.
  47. (1975). Comparison of different soil leaching techniques with four herbicides. Weed Sci.

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