Record 31 of 382 - CRIS/ICAR 9/96 
 TI:  WEED MANAGEMENT STRATEGIES FOR ORNAMENTAL PLANTS, STRAWBERRIES, AND FIBER
 FLAX 
 IN:  MERVOSH-T-L 
 PO:  ANALYTICAL CHEMISTRY. CON AGRIC EXPT STA-PO BOX 1106 
 LO:  NEW HAVEN, CONNECTICUT 06504. 
 FY:  1995 
 CL:   
                   PRIMARY CLASSIFICATION                  GENERAL CLASSIF. 
          RPA     ACTVTY   CMMDTY   SCNCE    PRCNT           PRGM     JTC 
          R206    A4700    C1000    F0212     25%            P3.13    J2B 
          R209    A4700    C2500    F0212     25%            P3.12    J2B 
          R906    A4700    C1300    F0212     35%            P3.15    J2B 
          R906    A4700    C1300    F1528     15%            P3.15    J2B 
 PH:  R206 (Weed-and-Hazard-Control-Fruit,-Vegetables); 
      R209 (Weed-and-Hazard-Control-Field-Crops); 
      R906 (Culture-and-Protection-Ornamentals,-Turf); 
      A4700 (Protection-Against-Weeds); 
      C1000 (Deciduous-and-Small-Fruits-and-Nuts); 
      C2500 (Other-Oilseeds-and-Oil-Crops); 
      C1300 (Ornamentals-and-Turf); 
      F0212 (Biology-Environmental,-Systematic-Plant); 
      F1528 (Chemistry-Soils) 
 GH:  P3.13 (Fruit); 
      P3.12 (New-Crops-and-Minor-Oilseeds); 
      P3.15 (Plants-to-Enhance-the-Environment); 
      J2B (Plant-Protection) 
 SC:  XPR (Pollution-Related) 15%; 
      S1033 (Strawberries) 25%; 
      S2530 (Flax) 25%; 
      S1310 (Woody-Shrubs) 20%; 
      S1321 (Herbaceous-Perennials,-Decorative-Greens) 15%; 
      S1324 (Potted-Flowering-Plants) 15%; 
      PST1 (Target-I-Biology) 15%; 
      PST2 (Target-II-Nonpesticidal-Control) 20%; 
      PST3 (Target-III-Pesticide-Use-Patterns) 50%; 
      IPMC (Integrated-Control-Control-Components) 20%; 
      IPM1 (Integrated-Control-Systems-Level-I) 40%; 
      IPM2 (Integrated-Control-Systems-Level-II) 20% 
 DE:  #JC95-05; HERBICIDES; WEEDS; WEED-CONTROL; HERBICIDE-EFFECTIVENESS;
 HERBICIDE-EVALUATION; HERBICIDE-MOVEMENT; FIELD-TRIALS; NURSERIES;
 CONTAINER-PRODUCTION; STRAWBERRIES; PRODUCTION-SYSTEMS; COVER-CROPS;
 COMPANION-CROPS; NON-CHEMICAL-CONTROL-(WEEDS); SORPTION; SOIL-CHEMISTRY; FLAX;
 ORNAMENTAL-PLANTS 
 CT:  Basic 25%; Applied 75%; Developmental 0% 
 OB:  Evaluate the efficacy, crop safety, and potential for off-site movement
 of herbicides for field-grown and container-grown ornamentals. Compare
 strawberry production systems involving the use of cover crops and/or
 companion crops to a standard herbicide-based system for weed management.
 Evaluate herbicides and identify cultural factors that provide effective
 management of weeds in fiber flax. 
 AP:  Crop injury and weed control ratings will be taken for herbicides applied
 to field-and container-grown ornamental plants. Herbicide sorption properties
 in soils and container substrates will be calculated. Cover and companion
 crops in strawberries will be evaluated for effects on weed densities and
 strawberry yields relative to chemical controls. Herbicides will be evaluated
 for flax injury and weed control. The effects of nitrogen fertility and
 planting date on weed competition with flax will be determined. 
 PR:  9501 TO 9512 
      The herbicides halosulfuron and sulfentrazone are being evaluated for
 possible registration in ornamental crops. Both prevented emergence of annual
 sedge and many broadleaf weeds for 2 to 3 months when applied over the top of
 yew, arborvitae, juniper, hemlock, and rhododendron in early June.
 Halosulfuron caused chlorosis and growth suppression of yew, arborvitae, and
 rhododendron; sulfentrazone temporarily injured hemlock foliage only.
 Combinations of sulfentrazone and isoxaben provided excellent weed control
 without significant injury to any of these ornamentals. In containers,
 sprayable combinations of isoxaben plus prodiamine or oryzalin prevented weeds
 such as horseweed and common groundsel to a greater extent than granular
 combinations of oxyfluorfen plus oryzalin or pendimethalin. The granular
 herbicides occasionally caused spotting injury to rhododendron leaves, and
 high rates of isoxaben plus pendimethalin injured rhododendron. Reduced weed
 control resulted from treatments of isoxaben alone or combined with
 napropamide. Compared to weed populations in strawberry plots, broadleaf weeds
 were suppressed in plots containing rotation crops of sorghum-sudangrass,
 ^Garry' oats, and ^Saia' oats. The preemergence herbicides EPTC and
 trifluralin caused unacceptable injury to flax. Postemergence herbicides such
 as sethoxydim plus MCPA or linuron provided adequate weed control with minimal
 crop injury. Early planting of flax reduced competition from weeds. 
 PB:  9501 TO 9512 
      MERVOSH, T.L. and AHRENS, J.F. 1996. Sulfentrazone and halosulfuron for
 preemergence weed control in woody ornamentals. Proc. Northeastern Weed Sci.
 Soc. (in press). MERVOSH, T.L. and AHRENS, J.F. 1996. Isoxaben spray
 combinations and granular herbicides for container-grown woody ornamentals.
 Proc. Northeastern Weed Sci. Soc. (in press). 
 OC:  000210 
 IC:  006160 
 SU:  Region 1 (Northeastern). 
 PS:  NEW 
 UD:  9503 
 UP:  9605 
 PP:  9512 
       
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