Index Catalog // ScholarsArchive@OSU

Herbicidal effect of glyphosate as influenced by spray drop size

Creator:: Chyau, Anna Tai-yung
Abstract:: An aqueous solution of technical glyphosate [N-(phosphonomethyl) glycine] was applied in homogeneous sprays of 120, 180 and 300 μm droplets to seedlings of a bush type green bean (Phaseolus vulgaris L. 'OSU 1604') at a carrier rate of 20 1/ha. At each droplet size all combinations of 3 dosage levels...
Resource Type:: Masters Thesis
Full Text:: ), were compared. Plant growth decreased as glyphosate dosage increased. There was no significant

Glyphosate activity as affected by spray drop size and leaf coverage

Creator:: King, Wayne O.
Abstract:: Bean shoot parts that respond to glyphosate (N- (phosphonomethyl)glycine) in ways useful for bioassay were determined by applying glyphosate doses of 3.8 to 60.3 ug ae per plant to the simple leaves when the first trifoliolate leaflets were about 1 cm long. Dry weights of parts that were almost fully...
Resource Type:: Dissertation
Full Text:: urn diameter. The largest drops were less effective than both smaller sizes, and no difference in

Vineyard floor vegetation management and mineral nutrient competition in grapes

Creator:: Tan, Siyuan
Abstract:: Two experiments were conducted on wine grapes 'Chardonnay' and 'Gewurtztraminer' (Vitis vinifera L.) in 1986 and 1987 to investigate the performance of grapes in competition with perennial ryegrass (Lolium perenne L.) 'Manhattan 11' sod, the competition between sod and grapes for nutrients and moisture and the effects of nitrogen fertilization...
Resource Type:: Masters Thesis
Full Text:: affecting grape growth. Irrigation had no significant effect on grape leaf N, P, Ca, Mg, Mn and Fe

Onion (Allium cepa L.) cultivar tolerance to bromoxynil

Creator:: Madrid, Modesto T.
Abstract:: In onions, sensitive cultivars diminish the usefulness of the selective herbicide bromoxynil. Tolerant cultivars can overcome this limitation. A better understanding of the biochemistry, physiology and genetics of bromoxynil tolerance could lead to improved weed control programs in onions. Onion cultivar response to bromoxynil was studied under greenhouse conditions. Tolerant...
Resource Type:: Dissertation
Full Text:: White Bermuda. Hydrolysis of cyano 14C bromoxynil in Utah YSS and White Bermuda yielded no

The response of beans to fluorodifen as affected by light and other factors

Creator:: Pollak, Tomas
Abstract:: Studies with fluorodifen were conducted to gain more information about its field performance and the influence of light quantity, quality and timing of exposure on its phytotoxic properties. Uptake and trans location in three plant species were also investigated. These studies were aimed at evaluating the usefulness of this chemical...
Resource Type:: Dissertation
Full Text:: observed, rapid uptake but little or no mobility. The unicellular algae Chlorella was used to assess

The performance of N-(1,1-dimethylpropynyl)-3,5-dichlorobenzamide and other herbicides in controlling weeds in lettuce as affected by soil type and weather conditions

Creator:: Mitidieri, Agustin
Abstract:: Chemicals are being sought that can control weeds in lettuce under different environmental conditions, soil types and weed populations. The extensive or repeated use of a herbicide may lead to important changes in the weed population which call for new materials that can take care of the modified situation. In...
Resource Type:: Masters Thesis
Full Text:: of pigweed and wild mustard required higher rates. No control of composite species was

Evaluation of allelopathy as a mechanism by which buckwheat suppresses Canada thistle and its mycorrhizae

Creator:: Eskelsen, Steven R.
Abstract:: Experiments were conducted to determine if allelopathy is a mechanism by which buckwheat interferes with a) the growth of Canada thistle and/or b) mycorrhizae colonization in Canada thistle roots. In a competition experiment, buckwheat plant biomass was only affected by the intraspecific competition from other buckwheat plants and not by...
Resource Type:: Dissertation
Full Text:: 5.1. Effect of vesicular-arbuscular mycorrhizae (VAM) 96 fungal inoculation (+VAM) or no VAM

Differential tolerance of woody nursery crop seedlings to napropamide

Creator:: Sumaryono, 1957-
Resource Type:: Masters Thesis
Full Text:: . There is no strong evidence of selectivity of soil-applied herbicides due solely to differences in

Enhancement of the weed competitive ability of lowland rice (Oryza sativa L.) cultivars

Creator:: Ranasinghe, Lakshman L.
Abstract:: Most of the presently grown cultivars of rice (Oryza sativa L.) have poor competitive ability against weeds if compared with traditional cultivars. Therefore, effective weed control is an important but often costly and difficult management practice in rice crop production. If weed competitive ability of rice cultivars could be improved...
Resource Type:: Dissertation
Full Text:: rice crop is more serious than no competition during early growth stages followed by competition

Modeling purple nutsedge (Cyperus rotundus L.) growth : preliminary evaluation of light intensity, soil moisture and herbicide effects

Creator:: Amerasinghe, A. A. L.
Abstract:: Purple nutsedge [Cyperus rotundas L.) has been recognized as one of the most troublesome perennial weeds of agricultural lands in tropical and some temperate regions. This research sought to determine the effects of timing of herbicides, shading, and soil moisture on plant population growth and tuber production of purple nutsedge...
Resource Type:: Dissertation
Full Text:: surface has a vaxy cuticle and no stomates. The lower surface is thinly cutinized and has many rows of

ScholarsArchive@OSU

Herbicidal effect of glyphosate as influenced by spray drop size

Glyphosate activity as affected by spray drop size and leaf coverage

Vineyard floor vegetation management and mineral nutrient competition in grapes

Onion (Allium cepa L.) cultivar tolerance to bromoxynil

The response of beans to fluorodifen as affected by light and other factors

The performance of N-(1,1-dimethylpropynyl)-3,5-dichlorobenzamide and other herbicides in controlling weeds in lettuce as affected by soil type and weather conditions

Evaluation of allelopathy as a mechanism by which buckwheat suppresses Canada thistle and its mycorrhizae

Differential tolerance of woody nursery crop seedlings to napropamide

Enhancement of the weed competitive ability of lowland rice (Oryza sativa L.) cultivars

Modeling purple nutsedge (Cyperus rotundus L.) growth : preliminary evaluation of light intensity, soil moisture and herbicide effects

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