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Filtering by: DOI 10.1186/s12943-015-0288-2 Remove constraint DOI: 10.1186/s12943-015-0288-2 Advisor Appleby, Arnold P. Remove constraint Advisor: Appleby, Arnold P.

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  • Indole-3-acetic acid in (2-chloroethyl)-trimethylammonium chloride-treated club wheat (Triticum aestivum compactum)

    Creator:
    Gould, Walter Leonard
    Abstract:
    Studies were conducted to verify the existence of IAA in wheat seedlings and to determine the effect of (2-chloroethyl)-trimethyl-ammonium chloride (CCC) on the IAA content of club wheat, Triticum aestivum compactum, variety Omar. The shoots of CCC-treated and untreated wheat plants were extracted with ethanol, the plant extract purified, separated...
    Resource Type:
    Dissertation
    Full Text:
    INDOLE-3-ACETIC AC ID IN (2-CHLOROETHYL)- TRIME THYI,AMMONIUM CHI,ORIDE- TREA TED C LUB WHEA T (TRITIC

  • Effect of a pre-irrigation period on the activity of ethofumesate applied to dry soil

    Creator:
    McAuliffe, David
    Abstract:
    Applications of ethofumesate in Oregon have been observed from previous research and from commercial use to be less effective when applied to dry soils, even if subsequent precipitation occurred within a few days. Two field studies were established in the summer of 1979 using sweet corn (Zea mays L. 'Jubilee')...
    Resource Type:
    Masters Thesis
    Full Text:
    approximately 2 and 30% w/w soil moisture. After 2 to 4 days, all soils were irrigated for stand establishment

  • Stimulation of plant growth by sub-lethal concentrations of herbicides

    Creator:
    Wiedman, Steven John
    Abstract:
    Studies were conducted to determine the extent and nature of sub-lethal effects of herbicides on plant growth. At least one herbicide from each major chemical class of herbicides was evaluated under greenhouse conditions. Oat plants were grown in sand culture to eliminate soil interferences. Herbicides were applied pre-emergence in nutrient...
    Resource Type:
    Dissertation
    Full Text:
    : amiben (3-amino-2, 5-dichlorobenzoic acid), barban (4-chloro-2-butynyl n-chlorocarbanilate), bromacil

  • Differential sensitivity of two common groundsel biotypes (Senecio vulgaris L.) to several s-triazine herbicides

    Creator:
    Radosevich, Steven R.
    Abstract:
    Studies were initiated to determine the response of two common groundsel biotypes (Senecio vulgaris L. ) to several s-triazine herbicides. Herbicides tested were: 2-chloro-4,6-bis(ethylamino)-striazine (simazine), 2-chloro-4-(ethylamino)-6-(isopropylamino)- s-triazine (atrazine) 2-(sec-butylamino)-4-(ethylamino)-6-methoxys- triazine (GS-14254), 2, 4-bis(isopropylamino)-6-methoxy-striazine (prometone), 2-(tert-butylamino)-4-(ethylamino)-6-methylthio- s-triazine (terbutryn), and 2, 4-bis(isopropylamino)-6- methylthio-s-triazine (prometryne). One biotype was much more susceptible than the...
    Resource Type:
    Dissertation
    Full Text:
    - cides. Herbicides tested were: 2-chloro-4,6-bis(ethylamino)-s- triazine (simazine), 2-chloro-4

  • Selective control of volunteer wheat (Triticum aestivum (L.) em. Thell.) in new seedlings of alfalfa (Medicago sativa L.) with fluazifop-butyl and sethoxydim

    Creator:
    Ott, Pablo
    Abstract:
    Volunteer winter wheat (Triticum aestivum 'Daws') severely suppressed growth of fall-planted alfalfa (Medicago sativa (L.) 'Vernal') seedlings. Wheat competition began soon after alfalfa emerged and continued until the first forage harvest the following May. Alfalfa yield at the first cutting was reduced by 1% for each day volunteer wheat was...
    Resource Type:
    Masters Thesis
    Full Text:
    harvest, alfalfa yield was reduced by 85%. Fluazifop-butyl (+) -butyl 2-(4-([5-(trifluoromethyl)- 2

  • Interaction between glyphosate and certain s-triazine herbicides

    Creator:
    Somabhi, Montien
    Abstract:
    Investigations were made in the field, greenhouse, growth chamber, and laboratory to: (a) observe the general activity of N- (phosphonomethyl)glycine (glyphosate); (b) determine the extent of its interaction with certain s-triazine herbicides; and (c) find an explanation for such an interaction. Greenhouse and growth chamber studies substantiated other observations that...
    Resource Type:
    Dissertation
    Full Text:
    field in com- bination with 2-chloro-4, 6- bis(ethylamino) -s- triazine (simazine), no clear

  • The influence of herbicide placement in soil on toxicity to emerging seedlings

    Creator:
    Nishimoto, R. K. (Roy Katsuto), 1944-
    Abstract:
    Previous research has indicated several soil-applied herbicides are more effective by exposure to emerging shoots than from root uptake. Studies were conducted in the greenhouse and growth chamber to investigate effects of herbicide placement in soil on toxicity to emerging seedlings. In these studies, an inch of treated soil was...
    Resource Type:
    Masters Thesis
    Full Text:
    herbicides included EPTC (ethyl N, N- dipropylthiocarbamate), dichlobenil (2, 6- dichlorobenzonitrile

  • Postemergence herbicides and take-all disease in winter wheat : alterations in the incidence and severity of disease and crop growth

    Creator:
    Geddens, Ray M.
    Abstract:
    Eight postemergence herbicides were evaluated to determine their influence on the incidence and severity of take-all disease caused by the fungus Gaeumannomyces graminis var. tritici in winter wheat. Mecoprop ((+)-2-(4-chloro-2-methylphenoxy)propanoic acid), difenzoquat (1,2- dimethyl- 3,5- diphenyl -1H- pyrazolium), dinoseb amine (amine salt of 2-(1-methylpropy1)-4,6-dinitrophenol), and diclofopmethyl (methyl ester of (+)-2-[4-(2,4-dichlorophenoxy)...
    Resource Type:
    Dissertation
    Full Text:
    caused by the fungus Gaeumannomyces graminis var. tritici in winter wheat. Mecoprop ((+)-2-(4-chloro-2

  • An evaluation of weed interference in rice grown on hydromorphic soils in West Africa

    Creator:
    Diop, Amadou Makhtar
    Abstract:
    Field, screenhouse, and laboratory experiments were conducted to study weed interference in rice grown on hydromorphic soils at the International Institute of Tropical Agriculture (IITA) at Ibadan, Nigeria. Rice and weeds emerged at the same time, 1 week after planting. Weed dry weight was significantly reduced when the crop was...
    Resource Type:
    Dissertation
    Full Text:
    for 2 weeks was not effective, because weeds reappeared and competed actively with rice plants

  • Factors influencing barnyardgrass (Echinochloa crus-galli) control with diclofop

    Creator:
    West, Lynn Douglas
    Abstract:
    Diclofop (2- [4 -(2, 4-dichlorophenoxy)phenoxy] propanoic acid), formulated as the methyl ester, selectively kills barnyardgrass [Echinochloa crus -galli (L.) Beauv.] in several crops when applied postemergence. Studies were conducted to determine the effect of soil moisture, barnyardgrass age, and site of exposure on control of barnyardgrass with diclofop. Soil moisture...
    Resource Type:
    Dissertation
    Full Text:
    Privacy_ Abstract Approved Arnold P. Appleby fir Diclofop (2-/4 -(2, 4-dichlorophenoxy)phenoxy7