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Articles 37051 - 37080 of 39787
Full-Text Articles in Physical Sciences and Mathematics
Control Of Peas And Lupins In Oats, J. R. Peirce, B. J. Rayner
Control Of Peas And Lupins In Oats, J. R. Peirce, B. J. Rayner
Experimental Summaries - Plant Research
Trial 87A30
All lupin treatments satisfactory.
Treaments 4, 8 and 9, ie Dicamba 500 ml and both treatments with diuron + 2,4-D amine would not control peas sufficiently to prevent rejection of line of oats. Peas are more difficult to control.
Chemical Control Of Four O'Clock (Oxalis Purpurea) And Narrow Leaf Oxalis (Oxalis Glabra)., J. R. Peirce, B. J. Rayner
Chemical Control Of Four O'Clock (Oxalis Purpurea) And Narrow Leaf Oxalis (Oxalis Glabra)., J. R. Peirce, B. J. Rayner
Experimental Summaries - Plant Research
Trial 97NO95
Control of small leaved Oxalis - Logran gave reasonable control. Post seeding treatments using Isoproturon gave very poor control.
Control of Oxalis purpurea (Four O'clock) - Logran either as a single application or a mixture with Isoproturon gave best control.
Control of clover - Isoproturon 4 L (post), Ally and Logran (40 g) gave 100% control.
Control of erodium - Logran gave very poor control.
Control of grasses - Isoproturon 2 & 4 Li/ha post emergent gave the best control of grasses.
Control of Four O'clock in cereals - Crop yield - Treatments using single doses of Isoproturon …
Control Of Four O'Clock (Oxalis Purpurea) In Cereals., J. R. Peirce, B. J. Rayner
Control Of Four O'Clock (Oxalis Purpurea) In Cereals., J. R. Peirce, B. J. Rayner
Experimental Summaries - Plant Research
Trial 87KA85
Because of the late dry season, yields were below expected. Under these conditions there were high visual crop damages recorded early after the treatments applied.
Control Of Soursob (Oxalis Pres-Caprae) In Cereals, J. R. Pierce, B. J. Rayner
Control Of Soursob (Oxalis Pres-Caprae) In Cereals, J. R. Pierce, B. J. Rayner
Experimental Summaries - Plant Research
Trial 87NO107
Plant counts for soursob and Four O'clock will be more accurate when counts taken after the break of 1988 season to determine the bulb production from last season.
Ally gave good control of doublegee. Isoproturon or mixtures with Isoproturon also gave good doublegee control. Logran & Glean were weak on doublegee.
Chemical Control Of Skeleton Weed., J. R. Peirce, B. J. Rayner
Chemical Control Of Skeleton Weed., J. R. Peirce, B. J. Rayner
Experimental Summaries - Plant Research
Trial PE17
Tordon 50 D & Lontrel L appear to be the only chemicals that will give effective reduction in the density of skeleton weed. However both these chemicals also removed all other broadleaved weeds present (capeweed, clover and flatweed), leaving the treated areas grass dominant.
Saffrom Thistle, Seed Set Control, J. R. Peirce, B. J. Rayner
Saffrom Thistle, Seed Set Control, J. R. Peirce, B. J. Rayner
Experimental Summaries - Plant Research
Trial 87ME119 - Saffron thistle, seed set control.
Trial 87TS38 - Saffron thistle control (seed set)
Trial 87JE42 - Seed set control in Saffron thistle.
All treatments had some measure of reducing seed production. Best control was obtained by applying chemicals just at or prior to flowering.
Lincoln Weed Control In Cereals And Pasture., I. Hudson, R. Ramm
Lincoln Weed Control In Cereals And Pasture., I. Hudson, R. Ramm
Experimental Summaries - Plant Research
Trial 87LG62 - Lincoln weed control in cereals.
Blanket treatment with Glyphosate controlled some ryegrass. Additional treatment with Glean killed nearly all the ryegrass and gave the best kill of Lincoln weed.
Trial 87LG63 - Control of weed in pasture.
Ally and Glean although giving control, would be considered too phytotoxic to use on legume pastures. Applications of 2,4-D amine at 1 L would give marginal safety on Subterranean clovers, but would cause significant damage to medics.
Control Of Wild Statice (Limonium Sinuatum) In Pasture., B. Kimber, R. Ramm
Control Of Wild Statice (Limonium Sinuatum) In Pasture., B. Kimber, R. Ramm
Experimental Summaries - Plant Research
Trial 87LG64
Wild Statice is a prolific seeder. Glean + diuron treatments, which were not included in trial gave good control, as did the farmer's treatment using Tribunil followed by heavy grazing. Later applications may be more effective because they may prevent seed formation for that year and also prevent the plant from recovering from spraying, as apparently with the early spraying.
Most chemical treatments would cause damage to broadleaved pasture.
Topsoil Displacement Methods For Crop Establishment. (Wheat And Barley), J. H. Moore, G. R. Dean
Topsoil Displacement Methods For Crop Establishment. (Wheat And Barley), J. H. Moore, G. R. Dean
Experimental Summaries - Plant Research
Trial No. 87AL28.
1. To create a reduced disease situation around the crop seed by placing surface soil from the seed row into the inter row zone.
2. to provide a more wettable, less weedy, less acidic environment for cereal seed by placing surface soil from the seed row into the inter row zone.
3. To improve seedling establishment and growth by packing the seeding rows only.
History Effects On Wheat Response., J. H. Moore, G. R. Dean
History Effects On Wheat Response., J. H. Moore, G. R. Dean
Experimental Summaries - Plant Research
Trial 85AL42
To determine the effects of tillage, sowing density, and time of planting of Osprey and Aroona on the pest and disease incidence, early growth and yield.
The Tolerance Of Legumes To Broadleaf Herbicides., P. Stewart, L. Mann
The Tolerance Of Legumes To Broadleaf Herbicides., P. Stewart, L. Mann
Experimental Summaries - Plant Research
Trial 87KA52
The control of broadleaf weeds in leguminous pasture is of major concern because of the ability of these weeds to compete strongly with the leguminous plants. The presence of broadleaf weeds in pasture reduces the pastures nutritional value as well as total nitrogen fixation. There are many herbicides which are available to control broadleaf weeds, but most of these are registered for use in cereals. The amount of tolerance that leguminous pasture plants show to many of these herbicides and herbicide mixes is not known.
The experiments were designed to screen a large number of herbicides for legume …
Phenological And Reproductive Development Of The Four Major Grass Species, P. Stewart, L. Mann
Phenological And Reproductive Development Of The Four Major Grass Species, P. Stewart, L. Mann
Experimental Summaries - Plant Research
Trial 87KA51
The decision of when to spray is one of the major difficulties encountered when spraytopping grassy pasture for seed set control. Previous work has shown the general herbicide application timing window for the major grasses, but within this window, the amount of seed set control achieved can still be poor. Obviously timing within this window needs to be more rigorously defined. The fundamental question we need to answer is; when do the target grasses begin to produce viable seed in relation to their phenological development and in relation to other grass species? If we know this, then herbicide …
Effects Of Residue Levels Of Glean On Lupin Growth, And Possible Synergism By Hoegrass., Terry Piper, Patrick Pigott
Effects Of Residue Levels Of Glean On Lupin Growth, And Possible Synergism By Hoegrass., Terry Piper, Patrick Pigott
Experimental Summaries - Plant Research
Trial 87PE37
This trial was conducted to confirm the results of 86WH53 and 87WH64. The trial commenced in September and in a glasshouse thus temperatures were higher and growth faster then in the field trials.
There are no significant effects of soil applied Glean or Hoegrass, and no interaction between the two herbicides.
In contrast, there is a very significant stunting of plants by Glean applied post emergence if Hoegrass is co-applied, but not by Glean alone.
Effects Of Residue Levels Of Simazine On Wheat Growth, And Possible Synergism By Glean., Terry Piper, Patrick Pigott
Effects Of Residue Levels Of Simazine On Wheat Growth, And Possible Synergism By Glean., Terry Piper, Patrick Pigott
Experimental Summaries - Plant Research
Trial 87PE36
A previous field test 86N33 had suggested that an apparent simazine residue affect on wheat growth might be exacerbated by Glean. This trial was carried out to further test the herbicide combination.
Control Of Doublegee In Sub. Clover And Medic Pastures., P. Stewart, L. Mann
Control Of Doublegee In Sub. Clover And Medic Pastures., P. Stewart, L. Mann
Experimental Summaries - Plant Research
Trial 87ME61, 87ME68, 87WH49, 87ES39, 87NO80(B), 87NO80, 87WH67.
Doublegees in pasture are a major concern of many farmers in most of the agricultural areas in Western Australia. In pasture, doublegees tend to compete strongly the first year after crop and then decline in subsequent years. When cropped, doublegees again appear in large numbers. Unfortunately, the WADA recommendation for doublegee control in pasture of Tribunil at 850 g/ha is now very expensive at $17/ha. A possible alternative is 2,4-D amine, but medics are very sensitive to this. 2,4-DB is another recommendation, but this tends to have low efficacy against doublegees and …
Glean Use On Drier Alkaline Soils, Terry Piper, Patrick Piggott
Glean Use On Drier Alkaline Soils, Terry Piper, Patrick Piggott
Experimental Summaries - Plant Research
Trial 86SG25 - Salmon Gums Research Station
There was no apparent evidence of chlorsulfuron carryover at either site, although the medic stand was visually assessed as thinned on 19/8/1987. In the absence of grazing pressure however, the remaining plants compensated by 25/9/1987.
Trial 87WH64 : The effects of low levels of Glean on lupins, in the presence of Hoegrass or Fusilade. Wongan Hills Research Station
This trial is a duplicate of 86WH53 and the results can be considered together.
Statistical analysis has shown a very highly significant effect of Glean on lupin growth in 1987, and on seed yield in …
Trace Element Nutrition. Tissue Testing Programme 1987, R. F. Brennan
Trace Element Nutrition. Tissue Testing Programme 1987, R. F. Brennan
Experimental Summaries - Plant Research
Project title: Evaluation of existing diagnostic procedures for the recommendation of trace element fertilizers.
Aim: To compare the accuracy and reliability of a range of tissue and soil tests being variously promoted for use to farmers for the diagnosis and prognosis of zinc and copper deficiencies in wheat crops on Western Australian farms.
Trial 87N23
Nitrogen rates on the main copper plots of the long term copper residual trial at Newdegate Research Station.
Location: Newdegate Research Station
To determine the effects of rates of nitrogen on the copper status of plants.
Trial 87LG33
Effects of rates of nitrogen on the …
Crop Establishment Methods For Lupin Disease Management, M Sweetingham, V Chisholm, A Pelham
Crop Establishment Methods For Lupin Disease Management, M Sweetingham, V Chisholm, A Pelham
Experimental Summaries - Plant Research
Contents
A. Crop establishment methods for lupin disease management
1. Pleiochaeta root rot
1.1 Depth of sowing
87LG32, 87LG36, 87ME60, 87ME75
1.2 Cultivation and sowing depth
87WH47, 87NO77, 87M54
1.3 Seeding machinery and sowing depth
2. Brown leaf spot/Pleiochaeta root rot
Phosphorus nutrition and crop rotation
87ME62, 87LG39
3. Rhizoctonia hypocotyl rot
Fungicide seed treatment and sowing depth
87BA25
4. Rhizoctonia root rot
4.1 Cultivation and sowing depth
87NO74
4.2 Fungicide seed treatment
87NO78
B. Fungicide drench trials to determine casual organisms of root/hypocotyl rot 87NO75, 87NO76.
Tropical Oil Pollution Investigations In Coastal Systems (Tropics): Final Report, T. G. Ballou, Richard E. Dodge, S. C. Hess, A. H. Knap, T. D. Sleeter
Tropical Oil Pollution Investigations In Coastal Systems (Tropics): Final Report, T. G. Ballou, Richard E. Dodge, S. C. Hess, A. H. Knap, T. D. Sleeter
Marine & Environmental Sciences Faculty Reports
No abstract provided.
Summer 1987, Nsu Oceanographic Center
Fall 1987, Nsu Oceanographic Center
Fish Acute Toxicity Syndromes And Their Use In The Qsar Approach To Hazard Assessment, Steven P. Bradbury, James M. Mckim, Gerald J. Niemi
Fish Acute Toxicity Syndromes And Their Use In The Qsar Approach To Hazard Assessment, Steven P. Bradbury, James M. Mckim, Gerald J. Niemi
Steven P. Bradbury
Implementation of the Toxic Substances Control Act of 1977 creates the need to reliably establish testing priorities because laboratory resources are limited and the number of industrial chemicals requiring evaluation is overwhelming. The use of quantitative structure activity relationship (QSAR) models as rapid and predictive screening tools to select more potentially hazardous chemicals for in-depth laboratory evaluation has been proposed. Further implementation and refinement of quantitative structure-toxicity relationships in aquatic toxicology and hazard assessment requires the development of a "mode-of-action" database. With such a database, a qualitative structure-activity relationship can be formulated to assign the proper mode of action, and …
Physiological Response Of Rainbow Trout (Salmo Gairdneri) To Acute Fenvalerate Lntoxication, Steven P. Bradbury, James M. Mckim, Joel R. Coats
Physiological Response Of Rainbow Trout (Salmo Gairdneri) To Acute Fenvalerate Lntoxication, Steven P. Bradbury, James M. Mckim, Joel R. Coats
Steven P. Bradbury
The physiological responses of rainbow trout (Salmo gairdneri) to fenvalerate intoxication during aqueous exposure were examined to provide information about the pyrethroid mode of action in fish. Trout (n = 4) were exposed to 412 ± 50 μg/liter fenvalerate and died in 10.9 ± 1.5 hr. Brain, liver, and carcass fenvalerate concentrations associated with mortality were 0.16 ± 0.05, 3.62 ± 0.57, and 0.25 ± 0.05 mg/kg, respectively. Visible signs of intoxication included elevated cough rate, tremors, and seizures. Histopathological examination of gill tissue showed damage consistent with irritation. An evaluation of respiratory-cardiovascular and blood chemistry responses indicated an elevated …
Santa Clara Magazine, Volume 29 Number 2, Winter 1987, Santa Clara University
Santa Clara Magazine, Volume 29 Number 2, Winter 1987, Santa Clara University
Santa Clara Magazine
9 - CAMPAIGN FINANCING A look at what's wrong with modern campaigns and a creative, alternative approach to financing them. By Timothy J. Lukes
13 - TRADITION SHATTERED One hundred women broke the all male tradition at SCU 25 years ago. They returned to the campus to celebrate. By Barbara Wyman
18 - PAUL AQUINO: 0 & A Paul Aquino '65 talks about his famous sister-in-law, Cory, his family, and life in the Philippines.
21 - A YEAR FOR OTHERS Seven 1986 graduates chose to spend this year with the ·Jesuit Volunteers. They talk about what it's like. By Julie …
New Species Of Neomegamphopus From Tropical America (Crustacea: Marine Amphipoda), J. L. Barnard, James Darwin Thomas
New Species Of Neomegamphopus From Tropical America (Crustacea: Marine Amphipoda), J. L. Barnard, James Darwin Thomas
Marine & Environmental Sciences Faculty Articles
Neomegamphopus hiatus is described from Venezuela and the Florida Keys, N. pachiatus and N. heardi from Pacific Panama, and N. kalanii from eastern Florida. Neomegamphopus hiatus and N. pachiatus differ from a close congener, N. roosevelti (tropical eastern Pacific), in the much larger coxa 1 of mature males, the less setose gnathopods, and the broader carpus of the first gnathopod bearing a much deeper incision defining the posterior tooth; the carpus is much shorter and stouter in N. hiatus and N. pachiatus than in N. roosevelti. Neomegamphopus heardi differs from the other species in the bifid tooth on the …
A New Species Of Chevalia From The Caribbean Sea (Crustacea: Amphipoda), J. L. Barnard, James Darwin Thomas
A New Species Of Chevalia From The Caribbean Sea (Crustacea: Amphipoda), J. L. Barnard, James Darwin Thomas
Marine & Environmental Sciences Faculty Articles
A new Caribbean species, Chevalia carpenteri is described; heretofore only one species of the genus was known, but we have examined material that suggests morphs may represent distinct species or subspecies. We report C. mexicana and extend its range from the northern Gulf of Mexico to Belize. Our new species differs from the world complex of C. aviculae morphs in the ovate article 2 of pereopods 5-7 and the posteriorly flat epimera with large notches.
The Indo-Pacific Audulla Chelifera Reported From The Caribbean Sea (Crustacea: Amphipoda), James Darwin Thomas, J. L. Barnard
The Indo-Pacific Audulla Chelifera Reported From The Caribbean Sea (Crustacea: Amphipoda), James Darwin Thomas, J. L. Barnard
Marine & Environmental Sciences Faculty Articles
Audulla chelifera Chevreux is reported for the first time outside of the Indian Ocean and Red Sea. It has now been found in the western Caribbean inhabiting the alga Turbinaria turbinata (Linneaus) Kuntze in backreef regions of the Belize barrier reef.
Lime Application To Acid. Yellow Eastern Wheatbelt Sandplain Soils, W Porter, S Carr
Lime Application To Acid. Yellow Eastern Wheatbelt Sandplain Soils, W Porter, S Carr
Experimental Summaries - Plant Research
Testing soil acidicity in the wheatbelt.
80M30, 80M31, 86M11, 8814E4, 85M48
Effects Of Rates Of Nitrogen On The Copper And Zinc Concentration And Grain Yield Of Wheat Plants Grown On Old Land (Previous Copper, Zinc History Known), R. F. Brennan
Experimental Summaries - Plant Research
To examine the possibility of rates of nitrogen inducing copper and zinc deficiency in wheat.
87LG33 Location: L. Slake; Lake Grace
A Comparison Of The Relative Sediment Transport Of Quartz And Aragonite Sand For Use As Beach Renourishment Materials In South Florida, Brian Lewis Lipsitz
A Comparison Of The Relative Sediment Transport Of Quartz And Aragonite Sand For Use As Beach Renourishment Materials In South Florida, Brian Lewis Lipsitz
HCNSO Student Theses and Dissertations
An evaluation of the relative rates of sediment transport of an oolitic aragonite sand and a quartz quarry sand as possible beach renourishment materials has been conducted. When comparing equal volumes, the aragonite experienced less transport than the quartz in both the longshore and in the onshore-offshore directions. When comparing equal size fractions, in sizes 0.35mm and smaller, aragonite was less transportable. The quartz was less transportable in the sizes greater than 0.35mm. This trend was observed in two separate experiments and is attributed to the effective density ratio of aragonite to quartz, dissimilarities in roundness and sphericity, and to …