Physical Sciences and Mathematics Commons^™

Preplanting Operations To Enhance The Rate Of Decline Of Doublegee Seeds In The Soil. Postplanting Operations To Enhance The Rate Of Decline Of Doublegee Seeds In The Soil., A H. Cheam

Experimental Summaries - Plant Research

Trial 85C89

Location: Chapman Research Station

To determine the effect of various preplanting operations, including the use of soil compaction, on the rate of decline of doublegee seeds in the soil.

Trial 85C90.

Location: Chapman Research Station.

To determine the effect of soil compaction after crop seeding on the rate of decline of doublegee in the soil.

Matricaria/Globe Chamomile (Pentzia Globifera) Density And Seed Production, J. Dodd

Experimental Summaries - Plant Research

Location: Muckinbudin.

Preliminary measurement of plant density and seed production were made in November 1987 at two infested properties near Muckinbudin.

Vermin fence herbicide trials (Established by J. R. Peirce 85ME63, 65, 68, 69, 70)

During assessment of the vermin fence herbicide trials in November 1987, certain plants in the sprayed plots were noted as being undamaged, even by the highest rates of herbicides used.

Radish Control In Lupins - Brodal., D J. Gilbey

Experimental Summaries - Plant Research

To study the effect of Brodal on lupins and radish.
87GE84, 87TS35, 87MO52, 87NO91, 86MO33.

Brome Grass Control In Wheat, G. S. Gill, R. L. Thomas

Experimental Summaries - Plant Research

Brome grass control in wheat
87GE29, 87WH9

Competition between wheat and mixtures of brome grass and doublegees.
87GE30

Wild Oat Control With Hoegrass With And Without Oil, R. Madin, J. Buckley

Experimental Summaries - Plant Research

Trial 87NO08
All treatments except Combine + Oil yielded significantly better than the control. Control of wild oats with Grasp was superior to many other treatments and this was reflected in the yield.

Trial 87N009
All treatments yielded significantly better than the control however there was no difference between herbicides, rates of use or additives. The exception being 0.75 L Hoegrass +WA which yielded significantly less than Grasp + oil.

Crop Establishment, R. Madin, J. Buckley

Experimental Summaries - Plant Research

Trial effect of timing of Roundup CT and Spray.Seed application and cultivation on crop establishment and growth.
87WH53, 87NO85

The general tendency was for yield to decrease as the time to seeding after Spray.Seed application increased.
For trial 87NO85 the site was a 'problem', heavy textured soil where crop emergence problems following glyphosate had been experienced in previous years.

Crop establishment - time of seeding following herbicide application.
87A37

Use of a knockdown herbicide greatly increased yield when compared to the unsprayed treatments. Further work is required to resolve contrasting results.

Tolerance Of Ceral Varieties To Grasp, R. Madin, J. Buckley

Experimental Summaries - Plant Research

The site remained mostly weed free throughout the season apart from some invasion by crassula spp. between plots. Some site variation was reflected in yield variation between replicates. The effects of Grasp on all varieties of wheat and Schooner barley were evident soon after spraying.
87A34 (2)

Tolerance Of Cereal Varieties To Hoegrass + Oil, R. Madin, J. Buckley

Experimental Summaries - Plant Research

Almost invariably, Hoegrass applied to wheat and barley varieties reduced crop vigour assessed ten weeks after spraying.
87A34(1)

Rates Of Ally And Glean For Cape Tulip Control., R. Madin, J. Buckley

Experimental Summaries - Plant Research

Evaluation in 1987 indicated that Ally and Glean at all rates gave 100% control of Cape Tulip at York with minimal pasture affect on species other than clover.
87NO110, 87NO110(1), 87NO110(2), 87NO110(3)

Evaluation Of Additives With Bracken Herbicides Applied To Boomsprayer., R. Madin, J. Buckley

Experimental Summaries - Plant Research

Treatments were applied in December 1987. Height of the Bracken made application by boom difficult due to inability to adequately raise the boom to give clearance. Some brushing of the Bracken with the boom was unavoidable. Assessment of the trial will be made in March 1988.

The Demography Of Doublegee. Ecological Studies On Arum Lily., F. D. Panetta

Experimental Summaries - Plant Research

3.1 Growth of doublegees under summer irrigation. (87A40)

The weevil, Perapion antiquum is a potential biological control agent of doublegee. However, it exhibits large population crashes during the summer months in the summer-dry areas of the Western Caped of South Africa, where it is native. It has been suggested that one means of successfully establishing Perapion in Western Australia could be to maintain populations in 'oases' over the summer months. The aim of this experiment was to determine how readily doublegee could be maintained in a non-senescent phase under irrigated and shaded conditions.

3.2 Doublegee demography in cereal crops (87GE30) …

Effect Of Different Chemical Treatments On Capeweed Control And Crop Yield., J. R. Peirce, B. J. Rayner

Experimental Summaries - Plant Research

Trial 87WH60

Control of capweed was obtained using post-emergence in-crop herbicides. Good control was on most of the treatments applied before seeding.

Most products showed good ryegrass control are not usually effective, assume some other factor operating. Treatment usually associated with good ryegrass control have higher ryegrass densities than the treatments using herbicides with only broadleaved variety.

Although large reductions in density of silvergrass were obtained none was significantly better than the unsprayed. Some treatments particularly those favouring grass dominance allowed silvergrass density to build up.

Bromegrass appears to be very sensitive to competition from capeweed. Where there was high …

The Ecology Of Skeleton Weed In Western Australia. Survival And Reproduction Of Wild Radish Populations, F. D. Panetta

Experimental Summaries - Plant Research

1.1 Skeleton weed demographic studies (84BA17)

To determine potential growth rates of skeleton weed populations on contrasting soil types.

2.1 Wild radish demography in lupin crops (87GE86) - the results are missing in the report please see in supplementary content

Control Of Capeweed Prior To Sowing Crop., J. R. Pierce, B. J. Rayner

Experimental Summaries - Plant Research

All treatments gave significant yield benefits over the untreated. Mixtures containing diuron did not cause any significant crop damage although yields on three of the treatments using 1.5 L/ha were low despite the good weed control.
87WH59

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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 …